Reymsa RT-707, RT-303, RT-606, RT-708, RT-709 Installation, Operation & Maintenance Manual

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The

All-Fiberglass

Cooling Towers

Installation, Operation & Maintenance Manual

Series

RT, RTU, RTG, RTM & RTGM Models

Standard & Low Sound Fans

REYMSA COOLING TOWERS, INC.

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The

All-Fiberglass

Cooling Towers

INTRODUCTION

Thank you for choosing REYMSA Cooling Towers as your best Fiberglass Cooling Tower option.

Since 1969, REYMSA Cooling Towers has been providing cost effective heat transfer solutions for the HVAC, industrial and plastic markets, having more than 5000 installed Cooling Towers around the world. REYMSA’s towers are manufactured with high quality materials and are designed to provide years of reliable service when properly operated and maintained.

The following manual has been prepared to support our customers with the installation and maintenance process of the “state of the art” RT Series Towers. It includes the RT, RTU, RTG, RTM & RTGM models with Standard, Low Sound, and Super Low Sound fans. Our Installation, Operation & Maintenance manual (IOM) has been written and reviewed by our engineering department based on theoretical knowledge and practical experience. A recommended guide is included for the start-up process assuring a secure and optimal installation. Regarding maintenance, REYMSA Cooling Towers strongly recommends establishing a scheduled maintenance program and ensure it is followed; this manual could be used as a guide to establish it.

Introduction

It is highly recommended that the whole manual and warranty are read before the installation and start-up.

If you have any doubts or need additional information, please contact your local REYMSA representative or visit our website.

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A. INSTALLATION 1

A.1 LOCATION 1

Index

A.2 ASSEMBLY INSTRUCTIONS FOR RT MODELS 3

A.3 ASSEMBLY INSTRUCTIONS FOR RTU MODELS 15

A.4 ASSEMBLY INSTRUCTIONS FOR RTG MODELS 21 A.5 ASSEMBLY INSTRUCTIONS FOR MODULAR TOWERS (RTM) 24

A.6 ASSEMBLY INSTRUCTIONS FOR MODULAR TOWERS (RTGM) 31

A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS 37 A.8 EQUALIZER LINE INSTALLATION 39 A.9 BOTTOM OUTLET CONNECTION 39 A.10 OPTIONAL EQUIPMENT 41

A.11 TOWER SET-UP 49

B. START-UP 54

B.1 FILLING SYSTEM WITH WATER 54 B.2 CONTROLLING WATER LEVEL 54 B.3 PUMP 55 B.4 GEAR REDUCER 55 B.5 FAN 56

. OPERATION 57

C.1 FAN CONTROL - VFD 57

C.2 WATER DISTRIBUTION SYSTEM

C.3 WATER TREATMENT AND WATER CHEMISTRY 62

C.4 MAKE-UP WATER REQUIREMENTS 64 C.5 COLD WEATHER OPERATION 65

C.6 SEASONAL SHUT-DOWN 66

. MAINTENANCE 67

D.1 TOWER MAINTENANCE SCHEDULE 68 D.2 BASIN 69 D.3 TOWER BODY 70 D.4 FAN MOTOR 71 D.5 GEAR REDUCER 73 D.6 BASIN HEATER 74

E. TROUBLE-SHOOTING 75

APPENDIX A: EXAMPLE OF UNLOADING A COOLING TOWER FROM A CONTAINER 77 APPENDIX B: WATER MAKE-UP FLOAT VALVE 79

TABLE OF CONTENTS

A.1.1 RECIRCULATION AND INTERFERENCE 1 A.1.2 ENVIRONMENTAL AND SAFETY 2

A.2.1 SINGLE FAN TOWERS 3 A.2.2 DOUBLE FAN TOWERS 7 A.2.3 QUADRUPLE FAN TOWERS 11

A.3.1 SINGLE FAN TOWERS (RTU) 15 A.3.2 DOUBLE FAN TOWERS (RTU) 17 A.3.3 QUADRUPLE FAN TOWERS (RTU) 19

A.5.1 GENERAL PROCEDURE 24 A.5.2 LARGE SIDE ARRANGEMENT FOR A MODULAR TOWER (RTM-L) 26 A.5.3 SHORT SIDE ARRANGEMENT FOR A MODULAR TOWER (RTM-S) 28

A.6.1 GENERAL PROCEDURE 31 A.6.2 LARGE SIDE ARRANGEMENT FOR A MODULAR TOWER (RTGM-L) 34 A.6.3 SHORT SIDE ARRANGEMENT FOR A MODULAR TOWER (RTGM-S) 36

A.10.1 SAFETY OPTIONAL EQUIPMENT 41 A.10.2 VIBRATION SWITCH 43 A.10.3 BASIN HEATER 45 A.10.4 ELECTRIC WATER LEVEL CONTROL SYSTEM 47 A.10.5 MOTOR SHAFT GROUNDING RING 48

A.11.1 LEVELING AND TOWER SUPPORTS 49 A.11.2 PIPPING CONNECTIONS 49 A.11.3 WIRING 52

A.11.3.1 PROCEDURE TO WIRE THE FAN MOTOR 53

C.1.1 PARAMETERS FOR VFD OPERATION C.1.2 CONFIGURATION AND START-UP FOR ABB ACH550-UH

C.3.1 SUSPENDED SOLIDS 63 C.3.2 SCALE FORMATION 63 C.3.3 BIOLOGICAL GROWTH 63 C.3.4 CORROSION 64 C.3.5 AIR POLLUTION 64

C.5.1 BASIN HEATER OPERATION 66 C.5.2 REMOTE SUMP OPERATION 66

57 58 61

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APPENDIX C: EXAMPLE OF STRUCTURAL BASE FOR A REYMSA COOLING TOWER 80 APPENDIX D: EXAMPLE OF ACCESSORIES ASSEMBLY INSTRUCTIONS 83 APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS 85

TABLES

Table A-1: Minimum recommended distance between towers 1 Table A-2: Equalizer Connection Sizes 39 Table A-3: Tightening Torque 40 Table C-1: Maximum operating temperatures for different fill media materials 61 Table C-2: Maximum operating pressure 61 Table C-3: Water chemistry guidelines 62 Table C-4: Cycles of concentration 64 Table D-1: Recommended tower and optional equipment maintenance schedule 68 Table D-2: Oil capacity for Gear Reducer models 73

FIGURES

Figure A-1: Minimum recommended distance between towers 1 Figure A-2: Recirculation 2 Figure A-3: Single Fan Tower fork lifting 3 Figure A-4: Single Fan Tower crane lifting 3 Figure A-5: Typical anchorage for a Single Fan Tower 4 Figure A-6: Removing U-bolts from basin for a Single Fan Tower 4 Figure A-7: Body and basin sections installation on RT-A, RT-B, and RT-C 4 Figure A-8: Lower body installation for a Single Fan Tower (RT-D) 5 Figure A-9: Removing U-bolts from Lower Body section for a Single Fan Tower (RT-D) 5 Figure A-10: Upper and Lower Body sections installation for a Single Fan Tower (RT-D) 5 Figure A-11: Fan Duct assembly for a Single Fan Tower 6 Figure A-12: Fan Duct alignment for a Single Fan Tower 6 Figure A-13: Double Fan Tower fork lifting 7 Figure A-14: Double Fan Tower crane lifting 7 Figure A-15: Typical anchorage for a Double Fan Tower 7 Figure A-16: Removing U- from basin for a Double Fan Tower 8 Figure A-17: Body and basin sections installation for a Double Fan Tower (RT-A, RT-B, RT-C) 8 Figure A-18: Lower body installation for a Double Fan Tower (RT-D) 9 Figure A-19: Removing U-bolts from Lower Body section for a Double Fan Tower (RT-D) 9 Figure A-20: Upper and Lower Body sections installation for a Double Fan Tower (RT-D) 9 Figure A-21: Fan Duct assembly for a Double Fan Tower 10 Figure A-22: Fan Duct alignment for a Double Fan Tower 10 Figure A-23: Quadruple Fan Tower fork lifting 11 Figure A-24: Quadruple Fan Tower crane lifting 11 Figure A-25: Typical anchorage for a Quadruple Fan Tower 11 Figure A-26: Basin section 2 installation for a Quadruple Fan Tower 12 Figure A-27: Removing U-bolts from basin for a Quadruple Fan Tower 12 Figure A-28: Lower body section 1 installation for a Quadruple Fan Tower (RT-D) 12 Figure A-29: Removing U-bolts from Lower Body section of a Quadruple Fan Tower (RT-D) 12 Figure A-30: Body section 1 (Upper Body section 1 for RT-D) on a Quadruple Fan Tower 13 Figure A-31: Body section 2 (Upper Body section 2 for RT-D) on a Quadruple Fan Tower 13 Figure A-32: Fan Duct installation for a Quadruple Fan Tower 14 Figure A-33: Fan Duct alignment 14 Figure A-34: Single Fan Tower fork and crane lifting 15 Figure A-35: Typical anchorage for a Single Fan Tower 15 Figure A-36: Fan Duct assembly for a Single Fan Tower 16 Figure A-37: Fan Duct alignment for a Single Fan Tower 16 Figure A-38: Double Fan Tower fork and crane lifting 17 Figure A-39: Typical anchorage for a Double Fan Tower 17 Figure A-40: Fan Duct assembly for a Double Fan Tower 18 Figure A-41: Fan Duct alignment for a Double Fan Tower 18 Figure A-42: Quadruple Fan Tower fork and crane lifting 19 Figure A-43: Typical anchorage for a Quadruple Fan Tower 19 Figure A-44: Body section 2 installation for a Quadruple Fan Tower 20 Figure A-45: Fan Duct installation for a Quadruple Fan Tower 20 Figure A-46: Crane lifting for an RTG model 21 Figure A-47: Typical anchorage for an RTG model 21 Figure A-48: Removing U-bolts from basin section of an RTG model 21 Figure A-49: Lower body section installation for an RTG-D & RTG-E models 22 Figure A-50: Upper Body section installation for an RTG-D & RTG-E models 22 Figure A-51: Fan Deck assembly for an RTG model 23 Figure A-52: Screen mesh assembly for an RTG model 23 Figure A-53: Crane lifting for a modular tower (RTM) 24 Figure A-54: Removing U-bolts from basin of a Modular Tower (RTM) 24

Index

Figure A-55: Body section assemble for a Modular Tower (RTM-B) 25 Figure A-56: Lower Body section assemble for a Modular Tower (RTM-D) 25 Figure A-57: Removing U-bolts from Lower Body section of a Modular Tower (RTM-D) 25 Figure A-58: Upper Body section assemble for a Modular Tower (RTM-D) 25

Index

Figure A-59: T1 module lifting and installation (RTM-B-L) 26 Figure A-60: T1 module lifting and installation (RTM-D-L) 26 Figure A-61: T2 module lifting and installation (RTM-B-L) 26 Figure A-62: T2 module lifting and installation (RTM-D-L) 26 Figure A-63: Fan Duct installation for a Modular Tower (RTM-B-L) 27 Figure A-64: Fan Duct installation for a Modular Tower (RTM-D-L) 27 Figure A-65: Fan Duct alignment for a Modular Tower 27 Figure A-66: Modular Tower installed by large side arrangement (-L) 27 Figure A-67: First module lifting for a short side arrangement (RTM-B-S) 28 Figure A-68: Second module lifting for a short side arrangement (RTM-B-S) 28 Figure A-69: Last module lifting for a short side arrangement (RTM-B-S) 29 Figure A-70: Fan Duct installation for a Modular Tower (RTM-B-S) 29 Figure A-71: Fan Duct alignment for a Modular Tower (RTM-B-S) 30 Figure A-72: Fan Duct installation for a Modular Tower (RTM-B-S) 30 Figure A-73: Crane lifting for a Modular Tower (RTGM) 31 Figure A-74: Removing the U-bolts from basin of a Modular Tower (RTGM) 31 Figure A-75: Body section installation for a modular tower (RTGM-B) 32 Figure A-76: Lower body section assembly for a modular tower (RTGM-D & RTGM-E) 32 Figure A-77: Removing U-bolts from the Lower Body section for a modular tower (RTGM-D & RTGM-E) 32 Figure A-78: Upper Body section installation for a modular tower (RTGM-D & RTGM-E) 32 Figure A-79: Removing U-bolts from the Upper Body section of a modular tower (RTGM-D & RTGM-E) 32 Figure A-80: Fan Deck section assemble for an RTG model 33 Figure A-81: Screen mesh assembly for an RTG model 33 Figure A-82: T1 module lifting and installation (RTGM-B-L) 34 Figure A-83: T1 module lifting and installation (RTGM-D-L & RTGM-E-L) 34 Figure A-84: Typical anchorage for a modular tower (RTGM) 34 Figure A-85: T2 Module lifting and installation (RTGM-B-L) 35 Figure A-86: T2 Module lifting and installation (RTGM-D-L & RTGM-E-L) 35 Figure A-87: T1 Module lifting and installation (RTGM-B-L) 35 Figure A-88: T1 Module lifting and installation (RTGM-D-L & RTGM-E-L) 35 Figure A-89: First T1 Module lifting and installation for a modular tower (RTGM-B-S) 36 Figure A-90: Second T1 Module lifting and installation for a modular tower (RTGM-B-S) 36 Figure A-91: Last T1 Module lifting and installation for a modular tower (RTGM-B-S) 36 Figure A-92: Fan adaptor on a Single Fan Tower 37 Figure A-93: Fan adaptor installation 37 Figure A-94: Fan adaptor alignment 37 Figure A-95: Fan adaptor 2 installation on a Double Fan Tower 37 Figure A-96: Fan Duct installation on a fan adaptor 38 Figure A-97: Fan Duct alignment 38 Figure A-98: Fan Duct installation on a fan adaptor for a Quadruple Fan Tower 38 Figure A-99: Equalizer line installation 39 Figure A-100: Bottom outlet connection view 39 Figure A-101: Tightening sequence 40 Figure A-102: Optional equipment by REYMSA 41 Figure A-103: Safety optional accessories 42 Figure A-104: Vibration Switch recommended location 43 Figure A-105: Internal switches 43 Figure A-106: Vibration Switch Electric Diagram 43 Figure A-107: Vibration Switch detail 44 Figure A-108: Sensitivity adjustment 44 Figure A-109: Basin heater system 45 Figure A-110: Recommended basin heater mounting 45 Figure A-111: Basin heater control panel diagram 46 Figure A-112: Electric Water Level Control System 47 Figure A-113: Electrical Connections & Water Level Control Parts Figure A-114: Motor Shaft Grounding Ring 48 Figure A-115: Motor Shaft Grounding Ring Path to Ground 48 Figure A-116: Example of base support 49 Figure A-117: Pipe connections for a Single Fan Tower 50 Figure A-118: Pipe connections for a Double Fan Tower (RT-D) 50 Figure A-119: Pipe connections for a Quadruple Fan Tower (RT-D) 51 Figure A-120: Example of equalization line 52 Figure B-1: Float valve installation Figure C-1: VFD operating range 57

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Figure C-2: Start-Stop method 58 Figure C-3: Operation method 58 Figure C-4: Measuring range RTD 58 Figure C-5: Recommended Connection Diagram for ABB ACH550-UH 58 Figure C-6: Water distribution system schematic drawing 61 Figure C-7: Filtration systems 63 Figure C-8: Fan discharge covering 66 Figure AP-1: Unloading a Cooling Tower from a container 77 Figure AP-2: Unloading the fan duct from a container 77 Figure AP-3: Lifting the fan duct with a forklift 78 Figure AP-4: Pulling the basin out from a container 78 Figure AP-5: Unloading the basin with two forklifts 78 Figure AP-6: Positioning the body section with a crane 78 Figure AP-7: Float Valve Parts 79

Index

Notes

INSTALLATION, OPERATION & MAINTENANCE

MANUAL

Cooling Towers (RT Series)

REYMSA COOLING TOWERS, INC.

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Cooling Towers

A. INSTALLATION

Location of the Cooling Tower is important to assure it achieves its desired performance. A bad location choice could lead into performance, safety and environmental issues. The following considerations are meant to be a guideline to avoid such problems.

A.1.1 RECIRCULATION AND INTERFERENCE

Recirculation is the recapture of a portion of warm and humid air by the same Tower. Interference is caused when a Cooling Tower is situated downwind or in close proximity to a heat-emitting source, like another Cooling Tower, fired heaters, flare stacks, boilers, and warm air enters the Cooling Tower. Both phenomena causes a variation in the entering air wet bulb temperature, therefore affecting the Cooling Tower performance. To avoid recirculation and interference, consider the following guidelines:

▪ Remove any obstructions that might prevent the free flow of the entering and exiting air.

▪ Make sure that the area provides enough clearance for safe operation. Place towers far enough apart

Installation

A.1 LOCATION

so that discharge air from one Tower is not drawn in by another. See Table A-1 and Figure A-1 for recommended clearances between towers.

Table A-1: Minimum recommended distance between towers

MODEL

303

404

505

606

707

708 4

709 5

808 4

810 5

812

714

816 7

819

822

824

1414

1616 10

1619 11

1622 13

1624

1627

MINIMUM

DISTANCE “D” (ft)

MODEL

RTG

812

9827

1012

1014

1016

1018 12

1020 13

1212 10

1214 11

1216 12

1218 13

1220 14

1222

1223

MINIMUM DISTANCE

“D” (ft)

For a complete table of minimum distances between towers and obstructions please refer to “APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS”.

Distance

“D”

Figure A-1: Minimum recommended distance between towers

Installation

▪ Place the Cooling Tower where it will have at least the recommended clearance on all sides for servicing

and for adequate air intake. It is advisable and preferred to have the top of the Tower above the roofline of any adjacent building or other nearby obstructions. This will limit the possibilities of the air recirculation back into the towers air intake (See Figure A-2). Use prevailing summer winds as a guideline for placing a Tower in a location that minimizes interference.

CORRECTINCORRECT

Building

Air out

Wall

Distance

“D”

Air in

Air out

Warm & moist air

Air in

Distance

“D”

Air in

Figure A-2: Recirculation

Louvers

▪ Do not place the Cooling Tower near exhaust fans or air intakes.

▪ Do not place the Cooling Tower near air make-up units where there is a possibility of the moist Tower

discharge air mixing with the air being drawn in by it.

A.1.2 ENVIRONMENTAL AND SAFETY

▪ Cooling Towers must be installed in accordance to all applicable construction, electrical and safety

standards, as well as State and Local regulations and codes.

▪ Before proceeding with the installation, make sure the area is provided with a grounded power source

supplying the correct voltage (required by the motor and pump). Field wiring should be completed by qualified personnel. All electrical wiring should comply with the electrical codes. Also see section “A.11.3.1 PROCEDURE TO WIRE THE FAN MOTOR”.

▪ Place the Cooling Towers on a leveled structural surface, capable of supporting the operational weight

of the Tower. Refer to section “A.11.1 LEVELING AND TOWER SUPPORTS” of this manual for information about leveling and recommended support. Contact your REYMSA representative with any questions regarding the recommended support for the Cooling Tower.

▪ REYMSA Cooling Towers are industrial pieces of equipment with rotating parts. Care should be taken in

placing them in a secure area where unauthorized access is minimized.

▪ Locate the Tower where there is a safe access for its maintenance.

▪ The Cooling Tower must be installed in a location where the Tower’s discharge air cannot be drawn into

any surrounding building fresh-air ducts.

▪ There is a certain amount of water that can be carried over in the discharge air of all Cooling Towers

(drift). Consideration should be given to placing Cooling Towers away from high traffic areas such as entrances and parking lots.

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A.2.1 SINGLE FAN TOWERS

Follow this procedure to assemble and install Single Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any abnormality or apparent damage

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

D. Remove the plastic wrap that surrounds the Tower and its components, loosen the nuts and bolts that keep

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

A.2 ASSEMBLY INSTRUCTIONS FOR RT MODELS

Installation

to the packaging before unloading the Cooling Tower and its components. The packing list must match with the received merchandise. Any equipment absences or abnormality must be reported directly to your local REYMSA representative.

a crane or forklift of the appropriate capacity (see Figure A-3 and Figure A-4 for reference).

horizontal. The basin section of the Single Fan towers has U-bolts on the flange for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-4). Don’t balance until tensing the straps.

the basin section attached to the wooden pallet (the body comes unattached), the nuts and bolts are located at the bottom of the basin (some models comes totally unattached to the pallet).

operational weight; also place an isolation pad (supplied by others) between the Tower and the base structure for support purposes. Verify that the base structure has the proper dimensions (for construction, refer to factory certified drawings). For more information, see section “A.11.1 LEVELING AND TOWER SUPPORTS”.

BASIN SECTION BODY SECTION

Straps

Fork extensions 6 ft min.

Pallet length

Figure A-3: Single Fan Tower fork lifting

Cable Cable

Cable

Rope

60°

Figure A-4: Single Fan Tower crane lifting

F. Place the basin section on top of the isolation pad and the steel base structure, making sure that the

anchorage holes on the bottom of the Tower are aligned with the perforations of the base. Then proceed to bolt it down and secure it with stainless steel nut and bolt sets (supplied by others) as shown on Figure A-5.

G. After the basin has been set in place, remove the U-bolts located on the flange before installing the next

section (see Figure A-6).

Installation

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt

9. (Supplied by others)

Steel base support

(Supplied by others)

Figure A-5: Typical anchorage for a Single Fan Tower

RT-A, RT-B & RT-C

Figure A-6: Removing U-bolts

from basin for a Single Fan Tower

1. Hot Water Inlet

2. Body Section

3. 4 Anchorage Holes (one on each corner): a. 1/2” X 2.5” Bolt b. 1/2” Flat Washer c. 5/8” Hole d. 1/2” Flat Washer e. 1/2” Lock Washer f. 1/2” Nut

4. Louvers

5. Basin Section

6. Anchorage Holes

7. Cold Water Outlet

8. Steel Base Support (supplied by others).

Remove

5 6

Figure A-7: Body and basin sections installation on RT-A, RT-B, and RT-C

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H. Only If your Tower is a RT-D model, it includes an additional part of body section (Lower Body section).

I. After the Lower Body section has been set in place, remove the U-bolts located on the flange before

J. Assemble the body section (Upper Body section for RT-D) with the basin section (Lower Body section for

Installation

Place the Lower Body section on top of basin section, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see Figure A-8).

installing the next section (see Figure A-9).

RT-D). The body section comes assembled with u-bolts for lifting; then using a crane assemble both parts, use a drift pin to align bolt holes as the sections are being set (See figure A-7 and A-10). Make sure that the hot water inlet, and the cold water outlet are on the same side of the Tower when assembled.

Remove

Figure A-8: Lower body installation for a Single

Fan Tower (RT-D)

RT-D

60°

6 7

8 9

Figure A-9: Removing U-bolts from Lower Body

section for a Single Fan Tower (RT-D)

1. Hot Water Inlet

2. Upper Body Section

3. 4 Anchorage Holes (one on each corner): a. 1/2” X 2.5” Bolt b. 1/2” Flat Washer

c. 5/8” Hole d. 1/2” Flat Washer e. 1/2” Lock Washer f. 1/2” Nut

4. Lower Body Section

5. Louvers

6. Basin Section

7. Anchorage Holes

8. Cold Water Outlet

9. Steel Base Support (supplied by others).

Figure A-10: Upper and Lower Body sections installation for a Single Fan Tower (RT-D)

K. Remove fan guard.

L. Then cradle/straddle the fan support with the straps (as shown in figure A-11) so you can lift the fan

duct with a crane and assemble it.

M. Now place the fan duct on the receiving flange of the upper section; make sure the bolt holes and the

marks inside the fan duct and the distribution manifold (located inside of body section) are aligned (see Figure A-11 and A-12). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

Installation

RECESSED FLANGE

MODELS

RT-303

RT-404

RT-505

RT-606

RT-707

RT-708

RT-709

RT-808

RT-810

RT-812

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

3. 5/8 Hole

4. 1/2” Screw Insert (factory assembled)

Figure A-11: Fan Duct assembly for a Single Fan Tower

ASSEMBLY HOLES

Figure A-12: Fan Duct alignment for a Single Fan Tower

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS”.

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A.2.2 DOUBLE FAN TOWERS

Follow this procedure to assemble and install Double Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any apparent damage to the packaging

Installation

before unloading the Cooling Tower. The packing list must match with the received merchandise. Any equipment absences or abnormality must be reported to your local REYMSA representative.

Figure A-13: Double Fan Tower fork

BASIN SECTION

Straps

BODY SECTION

Straps

Fork extensions

6 ft minimum pallet length

lifting

Cable

BASIN SECTION

Figure A-14: Double Fan Tower crane lifting

Spreader bar

Cable

BODY SECTION

Rope

60°

FAN DUCT

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

a crane or forklift of the appropriate capacity (see Figure A-13 and Figure A-14 for reference).

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

horizontal. The basin section of the Double Fan towers has U-bolts on the flange for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-14) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

D. Remove the plastic wrap that surrounds the Tower and its components, loosen the nuts and bolts that keep

the basin section attached to the wooden pallet (the body comes unattached), the nuts and bolts are located at the bottom of the basin (some models comes totally unattached).

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

F. Place the lower section of the Tower (basin) on top of the isolation pad and the base structure; Secure it

with the stainless steel nut and bolt sets (supplied by others) as shown on Figure A-15.

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt

(Supplied by others)

Steel Base Structure (supplied by others)

Figure A-15: Typical anchorage for a Double Fan Tower

Installation

G. After the basin has been set in place, remove the U-bolts located on the flange before installing the next

section (see Figure A-16).

Remove

Figure A-16: Removing U-bolts from basin for a Double Fan Tower

RT-A, RT-B & RT-C

1. Hot Water Inlet

2. Body Section

3. 4 Anchorage Holes (one on each corner): d. 1/2” X 2.5” Bolt a. 1/2” Flat Washer b. 5/8” Hole c. 1/2” Flat Washer d. 1/2” Lock Washer e. 1/2” Nut

6 7

4. Louvers

5. Basin Section

6. Anchorage Holes

7. Cold Water Outlet

8. Steel Base Support (supplied by others).

Figure A-17: Body and basin sections installation for a Double Fan Tower (RT-A, RT-B, RT-C)

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H. Only if your Tower is a RT-D model: It includes additional part of body section (Lower Body section).

I. After the Lower Body section has been set in place, remove the U-bolts located on the flange before

J. Assemble the body section (Upper Body section for RT-D) with the basin section (Lower Body section for

Installation

Place Lower Body section on top of basin section, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see figure A-18).

installing the Upper Body section (see Figure A-19).

RT-D). The body section comes assembled with u-bolts for lifting; then using a crane assemble both parts, use a drift pin to align bolt holes as the sections are being set (See figure A-17 and A-20). Make sure that the hot water inlet, and the cold water outlet are on the same side of the Tower when assembled.

REMOVE

Figure A-18: Lower body installation for

a Double Fan Tower (RT-D)

RT-D

6 7

8 9

Figure A-19: Removing U-bolts from Lower Body

section for a Double Fan Tower (RT-D)

1. Hot Water Inlet

2. Upper Body Section

3. 4 Anchorage Holes (one on each corner): a. 1/2” X 2.5” Bolt b. 1/2” Flat Washer c. 5/8” Hole d. 1/2” Flat Washer e. 1/2” Lock Washer f. 1/2” Nut

4. Lower Body Section

5. Louvers

6. Basin Section

7. Anchorage Holes

8. Cold Water Outlet

9. Steel Base Support (supplied by others).

Figure A-20: Upper and Lower Body sections installation for a Double Fan Tower (RT-D)

Installation

K. Remove fan guard.

L. Then cradle/straddle the fan support with the straps (as shown in figure A-21) so you can lift the fan

duct with a crane and assemble it.

M. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Now place fan duct 1 on the correspondent receiving flange on top of the Tower; make sure the bolt holes and the marks inside the fan duct and the receiving flange are aligned (Figure A-21 and A-22). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

N. Follow the same instructions to place fan duct 2.

ASSEMBLY HOLES

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

3. 5/8 Hole

4. 1/2” Screw Insert (Factory assembled)

RECESSED FLANGE

MODELS

RT-714

RT-816

RT-819

RT-822

RT-824

RT-827

Figure A-21: Fan Duct assembly for a Double Fan Tower

Figure A-22: Fan Duct alignment for a Double Fan Tower

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS”.

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A.2.3 QUADRUPLE FAN TOWERS

Follow this procedure to assemble and install Quadruple Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any apparent damage to the packaging

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

Straps

before unloading the Cooling Tower. The packing list must match with the received merchandise. Any equipment absences or abnormality must be reported to your local REYMSA representative.

a crane or forklift of the appropriate capacity (see Figure A-23 and Figure A-24 for reference).

horizontal. The basin section of the Double Fan towers has U-bolts on the flange for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-24) and use a spreader frame to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

BASIN SECTION

Cable

Rope

60°

BODY SECTION

Spreader bar

Cable

Installation

Straps

Fork extensions

6 ft minimum pallet length

Figure A-23: Quadruple Fan Tower fork

lifting

BASIN SECTION

Figure A-24: Quadruple Fan Tower crane lifting

BODY SECTION

FAN DUCT

D. Remove the plastic wrap that surrounds the Tower and its components, loosen the nuts and bolts that keep

the basin section attached to the wooden pallet (the body comes unattached), the nuts and bolts are located at the bottom of the basin (some models comes totally unattached).

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

F. Place the basin section of the Tower on top of the isolation pad and the base structure; Secure it with the

stainless steel nut and bolt sets (supplied by others) as shown on Figure A-25.

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt (Supplied by others)

STEEL BASE STRUCTURE

(SUPPLIED BY OTHERS)

Figure A-25: Typical anchorage for a Quadruple Fan Tower

G. Place the basin section #2 of the Tower following the same instructions of step F. Is strongly recommended

the use of the spreader bar as illustrated on Figure A-26. Once the both section are in the structural base, then proceeds to bolt together the vertical flanges of basin sections 1 & 2; use firsts the galvanized bolts and nuts to join sections (supplied by REYMSA); then replace the galvanized bolts with the stainless steel nut and bolt set supplied by REYMSA and secure both sections to the structural base.

H. After the basin has been set in place, remove the U-bolts on top of each corner before installing the body

section (see Figure A-27).

Installation

BASIN SECTION

Vertical

Flanges

Figure A-26: Basin section 2 installation for a Quadruple Fan Tower

Figure A-27: Removing U-bolts from basin

for a Quadruple Fan Tower

Remove

Vertical Flanges

I. Only if your Tower is RT-D model: This includes additional part of body section (Lower Body section).

Place Lower Body section #1 on top of basin section #1, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA. See Figure A-28.

J. Follow the same instruction to install the Lower Body section #2 on top of basin section #2. Once both

sections are installed, then proceed to bolt together the vertical flanges of Lower Body section 1 & 2; use first the galvanized bolts and nuts to join sections, once both section are well together, then replace galvanized bolts with the stainless steel nut and bolt sets supplied by REYMSA. Remove U-bolts from both sections (see Figure A-29).

Figure A-28: Lower body section 1 installation for

a Quadruple Fan Tower (RT-D)

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Vertical Flanges

Figure A-29: Removing U-bolts from Lower Body

section for a Quadruple Fan Tower (RT-D)

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K. Assemble the body section #1 (Upper Body section 1 for RT-D) with the basin section #1 (Lower Body

Installation

section 1 for RT-D), making sure that the bolt holes on body section #1 are aligned with the perforations on basin section #1, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt supplied by REYMSA. See figure A-30 (wait the final tight until two upper section are on place and you can tighten the vertical flanges as well). Make sure that the hot water inlet and the cold water outlet are on the same side.

RT-A, RT-B & RT-C RT-D

Upper Body Section

Body Section

Lower Body Section

Figure A-30: Body section 1 (Upper Body section 1 for RT-D) on a Quadruple Fan Tower

L. Assemble the body section #2 (Upper Body for RT-D) with the basin section #2 (Lower Body for RT-

D), making sure that the bolt holes on body section #2 (Upper Body for RT-D) are aligned with the perforations on basin section #2 (Lower Body for RT-D), then proceeds to bolt together the vertical flanges of body sections (Upper Body for RT-D) 1 & 2; use first the galvanized bolts and nuts to join sections (supplied by REYMSA), once both sections are well together then replace galvanized bolts with the stainless steel nut and bolts sets supplied by REYMSA. Make sure that the hot water inlet and the cold water outlet are on the same side.

M. Now with the two upper sections together, proceed to bolt down and secure horizontal flanges with the

stainless steel nut and bolts sets supplied by REYMSA. See Figure A-31.

RT-A, RT-B & RT-C RT-D

Vertical Flanges

Horizontal Flanges

Figure A-31: Body section 2 (Upper Body section 2 for RT-D) on a Quadruple Fan Tower

Installation

N. Remove fan guard.

O. Then cradle/straddle the fan support with the straps (as shown in Figure A-32)so you can lift the fan duct

with a crane and assemble it.

P. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Place fan duct 1 on the corresponding receiving flange on top of body section 1 of the Tower; make sure the bolt holes and the marks inside the fan duct and receiving flange are aligned (Figure A-32 and A-33). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

ASSEMBLY HOLES

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

3. 5/8 Hole

RECESSED FLANGE

MODELS

RT-1414

RT-1616

RT-1619

RT-1622

RT-1624

RT-1627

4. 1/2” Screw Insert (Factory assembled)

Figure A-32: Fan Duct installation for a Quadruple Fan Tower

Figure A-33: Fan Duct alignment

Q. Continue to place fan duct 2 on top of body section 1, following the same instructions mentioned on

previous step. Follow the step N, O and P for the remaining fan ducts.

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWER: FAN ADAPTORS”.

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A.3.1 SINGLE FAN TOWERS (RTU)

Follow this procedure to assemble and install Single Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any abnormality or apparent damage

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

C. For unloading a tower from a container, refer to “APPENDIX A: EXAMPLE OF UNLOADING A COOLING

A.3 ASSEMBLY INSTRUCTIONS FOR RTU MODELS

Installation

a crane or forklift of the appropriate capacity (see Figure A-34 for reference).

TOWER FROM A CONTAINER”.

UNITIZED BODY & BASIN

Straps

Fork extensions 6 ft min.

Pallet length

Figure A-34: Single Fan Tower fork and crane lifting

Cable

60°

FAN DUCT

Rope

D. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

horizontal. The Tower has U-bolts for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-34) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

E. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the Tower (unitized body & basin) attached to the wooden pallet (those located at the bottom of basin).

F. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

G. Place the Tower (unitized body & basin) section on top of the isolation pad and the steel base structure,

making sure that the anchorage holes on the bottom of the Tower are aligned with the perforations of the base. Then proceed to bolt it down and secure it with stainless steel nut and bolt sets (supplied by others) as shown on Figure A-35.

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt

Steel base support

(Supplied by others)

Figure A-35: Typical anchorage for a Single Fan Tower

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

(Supplied by others)

H. Remove fan guard.

I. Then cradle/straddle the fan support with the straps (as shown in figure A-36) so you can lift the fan

duct with a crane and assemble it.

J. Now place the fan duct on the receiving flange of the upper section; make sure the bolt holes and the

marks inside the fan duct and the distribution manifold (located inside of body section) are aligned (see Figure A-36 and A-37). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

Installation

RECESSED FLANGE

MODELS

RTU-303

RTU-404

RTU-505

RTU-606

RTU-707

RTU-708

RTU-709

RTU-808

RTU-810

RTU-812

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

3. 5/8 Hole

4. 1/2” Screw Insert (factory assembled)

Figure A-36: Fan Duct assembly for a Single Fan Tower

ASSEMBLY HOLES

Figure A-37: Fan Duct alignment for a Single Fan Tower

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS”.

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A.3.2 DOUBLE FAN TOWERS (RTU)

Follow this procedure to assemble and install Double Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any apparent damage to the packaging

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

C. For unloading a tower from a container, refer to “APPENDIX A: EXAMPLE OF UNLOADING A COOLING

D. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

Installation

before unloading the Cooling Tower. The packing list must match with the received merchandise. Any equipment absences or abnormality must be reported to your local REYMSA representative.

a crane or forklift of the appropriate capacity (see Figure A-38 for reference).

TOWER FROM A CONTAINER”.

horizontal. The Tower has U-bolts for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-38) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

UNITIZED BODY & BASIN

Straps

Fork extensions

6 ft minimum pallet length

Cable

60°

Figure A-38: Double Fan Tower fork and crane lifting

Spreader bar

FAN DUCT

Rope

E. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the Tower (unitized body & basin) attached to the wooden pallet (those located at the bottom of basin).

F. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

G. Place the Tower (unitized body & basin) on top of the isolation pad and the base structure; Secure it with

the stainless steel nut and bolt sets (supplied by others) as shown on Figure A-39.

Steel base structure

(Supplied by others)

Figure A-39: Typical anchorage for a Double Fan Tower

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt (Supplied by others)

Installation

H. Remove fan guard.

I. Then cradle/straddle the fan support with the straps (as shown in figure A-40) so you can lift the fan

duct with a crane and assemble it.

J. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Now place fan duct 1 on the correspondent receiving flange on top of the Tower; make sure the bolt holes and the marks inside the fan duct and the receiving flange are aligned (Figure A-40 and A-41). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

K. Follow the same instructions to place fan duct 2.

ASSEMBLY HOLES

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

3. 5/8 Hole

4. 1/2” Screw Insert (Factory assembled)

RECESSED FLANGE

MODELS

RTU-714

RTU-816

RTU-819

Figure A-40: Fan Duct assembly for a Double Fan Tower

Figure A-41: Fan Duct alignment for a Double Fan Tower

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS”.

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A.3.3 QUADRUPLE FAN TOWERS (RTU)

Follow this procedure to assemble and install Quadruple Fan Cooling Towers.

A. Upon the arrival of the equipment to its final destination, check for any apparent damage to the packaging

B. After verifying the equipment is received in proper condition, proceed to unload it piece by piece, with

C. For unloading a tower from a container, refer to “APPENDIX A: EXAMPLE OF UNLOADING A COOLING

D. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

Installation

before unloading the Cooling Tower. The packing list must match with the received merchandise. Any equipment absences or abnormality must be reported to your local REYMSA representative.

a crane or forklift of the appropriate capacity (see Figure A-42 for reference).

TOWER FROM A CONTAINER”.

horizontal. The Body section has U-bolts for lifting, one on each corner. Place the straps through the u-bolts (as shown in Figure A-42) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

UNITIZED BODY & BASIN

Straps

Fork extensions

6 ft minimum pallet length

Cable

60°

Figure A-42: Quadruple Fan Tower fork and crane lifting

Spreader bar

FAN DUCT

Rope

E. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the Tower (unitized body & basin) attached to the wooden pallet (those located at the bottom of basin.

F. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

G. Place the Section #1 (unitized body & basin) of the Tower on top of the isolation pad and the base

structure; Secure it with the stainless steel nut and bolt sets (supplied by others) as shown on Figure A-43.

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt (Supplied by others)

Steel Base Structure (supplied by others)

Figure A-43: Typical anchorage for a Quadruple Fan Tower

Installation

H. Place Section #2 (unitized body & basin) on top of the isolation pad and the base structure, and then

proceeds to bolt together the vertical flanges of Sections 1 & 2; use first the galvanized bolts and nuts to join sections (supplied by REYMSA). Then replace the galvanized bolts with the stainless steel nut and bolt sets supplied by REYMSA (see Figure A-44). Then bolt down and secure Tower Section #2 to the structural base with stainless steel nut and bolt sets (supplied by others) as shown on Figure A-43.

Vertical flanges

Figure A-44: Body section 2 installation for a Quadruple Fan Tower

I. Remove fan guard.

J. Then cradle/straddle the fan support with the straps (as shown in Figure A-45) so you can lift the fan duct

with a crane and assemble it.

K. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Place fan duct 1 on the corresponding receiving flange on top of body section 1 of the Tower; make sure the bolt holes and the marks inside the fan duct and receiving flange are aligned (Figure A-41 and A-45). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

L. Continue to place fan duct 2 on top of body section 1, following the same instructions mentioned in

previous step. Follow the step I, J and K for the remaining fan ducts.

ASSEMBLY HOLES

1. 1/2” X 2.5” Bolt

2. 1/2” Flat Washer

RECESSED FLANGE

MODELS

RTU-1414

RTU-1616

RTU-1619

3. 5/8 Hole

4. 1/2” Screw Insert (Factory assembled)

Figure A-45: Fan Duct installation for a Quadruple Fan Tower.

NOTE

If your Tower is for a low sound application and it includes a fan adaptor please see Section “A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS”.

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Follow this procedure to assembly and install an RTG Cooling Tower. Use drift pins to align bolt holes and use the galvanized bolts provided to torque the sections together. Replace galvanized bolt with stainless bolts after sections are secured together.

A. Upon the arrival of the equipment to its final destination, check for any abnormality or apparent damage

B. After assuring the equipment is received in proper condition, proceed to unload it from the transportation

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

A.4 ASSEMBLY INSTRUCTIONS FOR RTG MODELS

Installation

on the packaging before unloading the Cooling Tower from the transportation vehicle.

vehicle, piece by piece, with a crane (using a spreader bar) or forklift of the appropriate capacity, see Figure A-46 for an example.

horizontal. Each section of the Tower has U-bolts for lifting. Place the straps through the U-bolts (as shown in Figure A-46) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

Fan Deck

Basin Section

Lower Body Section

(only RTG-D & RTG-E)

Figure A-46: Crane lifting for an RTG model.

Upper Body / Body Section

D. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the body & basin attached to the wooden pallet (those located at the bottom of basin).

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt (Supplied by others)

Remove

Steel base structure

(Supplied by others)

Figure A-47: Typical anchorage for an RTG model.

Figure A-48: Removing U-bolts from

basin section of an RTG model.

F. Place the basin section of the Tower on top of the isolation pad and the base structure; Secure it with the

stainless steel nut and bolt sets (supplied by others) as shown on Figure A-47.

G. After the basin has been set in place, remove the U-bolts located on the flange before installing the next

section (see Figure A-48).

H. Only if your Tower is an RTG-D or RTG-E model: It includes an additional part of body section (Lower

Body section). Place Lower Body section on top of basin section, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see figure A-49).

Installation

I. After the Lower Body section has been set in place, remove the U-bolts located on the flange before

installing the Upper Body section (see Figure A-49).

Remove

Figure A-49: Lower body section installation for an RTG-D & RTG-E models.

J. Assemble the body section (Upper Body section for RTG-D or RTG-E) with the basin section (Lower Body

section for RTG-D or RTG-E). The body section comes assembled with u-bolts for lifting; then using a crane assemble both parts, use a drift pin to align bolt holes as the sections are being set (See figure A-50). Make sure that the hot water inlet, and the cold water outlet are on the same side of the Tower when assembled.

K. After installing the body, remove the U-bolts before installing the Fan Deck (see Figure A-50).

Remove

Figure A-50: Upper Body section installation for an RTG-D or RTG-E models.

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L. RTG models have a section called “Fan Deck” which is at the top of the Tower. The Fan Deck with duct

M. Before the lifting of the Fan Deck Section, remove the safety screen mesh on the floor.

N. Assemble Fan Deck Section with Body Section, making sure that the holes on the Fan Deck Section are

O. After The Fan Deck has been set in place, proceed to bolt down the Mechanical Support (Hot Dip

contains a gear drive fan and a motor mounted in a structural Hot Dip Galvanized Steel, and a corrosion resistant safety screen mesh. (See Figure A-51).

aligned with the holes on the Body Section. Secure it with stainless steel bolts.

Galvanized Steel) to the Body Section FRP support inside of the Fan Deck Section (see figure A-51).

2 ” x 2

2 ” bolts

2 ” Flat washer

Installation

2 ” Lock washer

Mechanical Support (Hot Dip Galvanized Steel)

Body Section FRP Support

2 ” Nut

2 ” Safety nut

Figure A-51: Fan Deck assembly for an RTG model.

P. Place the corrosion resistant safety screen mesh on top of the Fan Deck Section (see figure A-52).

Figure A-52: Screen mesh assembly for an RTG model.

A.5. ASSEMBLY INSTRUCTIONS FOR MODULAR TOWERS (RTM)

A.5.1 GENERAL PROCEDURE

Follow this procedure to assembly and install an RTM Cooling Tower. Use drift pins to align bolt holes and use the galvanized bolts provided to torque the sections together. Replace galvanized bolt with stainless bolts after sections are secured together.

A. Upon the arrival of the equipment to its final destination, check for any abnormality or apparent damage

on the packaging before unloading the Cooling Tower from the transportation vehicle.

Installation

B. After assuring the equipment is received in proper condition, proceed to unload it from the transportation

vehicle, piece by piece, with a crane (using a spreader bar) or forklift of the appropriate capacity, see Figure A-53 for an example.

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

horizontal. Each section of the Tower has U-bolts for lifting. Place the straps through the U-bolts (as shown in Figure A-53) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

Fan Duct

Lower Body Section

Basin Section

(only RTM-D models)

Figure A-53: Crane lifting for a modular tower (RTM)

Upper Body / Body Section

D. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the body & basin attached to the wooden pallet (those located at the bottom of basin).

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

F. Tower modules are identified by a

label on each section (basin, body

Remove

and duct of module #1 will be labeled “T1”, sections of the module #2 will be labeled “T2”, etc.).

G. Each module of an RTM model

should be assembled on the floor before installing it on the steel base support.

H. Remove the U-bolts located on the

flange of basin section #1 before installing the body section #1 (see Figure A-54).

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Figure A-54: Removing U-bolts from basin of a Modular Tower (RTM)

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I. Assemble body section #1 (for RTM-B) with the basin section #1, making sure that the bolt holes on

Installation

body section #1 are aligned with the perforations on basin section #1, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see Figure A-55 for reference).

Figure A-55: Body section assemble for a Modular

Tower (RTM-B)

J. Only for RTM-D models: Assemble Lower Body section #1 on top of basin section #1, make sure that

the bolt holes on Lower Body section #1 are aligned with the perforations on basin section #1, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see Figure A-56).

K. Only for RTM-D models: Remove U-bolts from Lower Body section before installing the next section (see

Figure A-57). Place Upper Body section #1 on top of Lower Body section #1, making sure that the bolt holes are aligned (see Figure A-58). Bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA.

Remove

Figure A-56: Lower body section

assemble for a Modular Tower

(RTM-D)

Figure A-57: Removing U-bolts from

Lower Body section of a Modular

Tower (RTM-D)

Figure A-58: Upper body section

assemble for a Modular Tower

(RTM-D)

Installation

A.5.2 LARGE SIDE ARRANGEMENT FOR A MODULAR TOWER (RTM-L)

The following steps are a procedure to install an RTM-B or RTM-D Modular Tower with arrangement by the large side.

Follow the same instructions from section “A.5.1 GENERAL PROCEDURE” to assemble the modules.

A. Once the basin and body sections have been assembled, lift the Tower using a crane and a spreader bar

and place it on top of the isolation pad and the steel base structure. Secure it with the stainless steel nut and bolts sets (supplied by others) as shown on Figure A-59 and Figure A-60.

Figure A-59: T1 module lifting and installation (RTM-B-L)

Figure A-60: T1 module lifting and installation (RTM-D-L)

B. Repeat the previous steps to install the remaining modules. Pay attention to the correct module

arrangement; Each module is labeled alphabetically (module 1: A; module 2: B, etc.) for a proper installation (see Figure A-61 and Figure A-62).

▪ First module assembled should be T1 module, with 3 air inlet sides (2 short sides, 1 large side).

▪ Next module(s) must be T2 module, with 2 air inlet sides (short sides).

▪ The final module must be T1 type module, with 3 air inlet sides (2 short sides, 1 large side).

No air inlet

(T2 module)

No air inlet (T2 module)

Figure A-61: T2 module lifting and installation (RTM-B-L)

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Figure A-62: T2 module lifting and installation (RTM-D-L)

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After all the modules have been installed, proceed assemble the fan ducts.

C. Remove fan guard from fan section.

D. Then cradle/straddle the fan support with the straps (as shown in figure A-63 and A-64) so you can lift

Installation

the fan duct with a crane and assemble it.

Figure A-63: Fan Duct installation for a Modular

Tower (RTM-B-L)

E. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Now place fan duct 1 on the correspondent receiving flange on top of the Tower; make sure the bolt holes and the marks inside the fan duct and the receiving flange are aligned (see Figure A-65). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

F. Follow the same instructions to place the remaining fan ducts (see figure A-66).

Figure A-64: Fan Duct installation for a Modular

Tower (RTM-D-L)

Figure A-65: Fan Duct alignment for a Modular Tower

Figure A-66: Modular Tower installed by large

side arrangement (-L)

A.5.3. SHORT SIDE ARRANGEMENT FOR A MODULAR TOWER (RTM-S)

The following steps are a procedure to install an RTM-B or RTM-D Modular Tower with arrangement by the short side.

Follow the same instructions from section “A.5.1 GENERAL PROCEDURE” to assemble the modules.

A. Lift the first module using a crane and a spreader bar and place it on top of the isolation pad and the

steel base structure. Secure it with the stainless steel nut and bolts sets (supplied by others) as shown on Figure A-67.

Installation

B. Follow the same procedure to install the next module. This module should have only two air inlets (on the

large sides). See Figure A-68 for reference.

Air inlet louvers

(back side)

Air inlet

louvers

Figure A-67: First module lifting for a short side arrangement (RTM-B-S)

Air inlet louvers

(back side)

NO Air inlet louvers

NO air inlet louvers

(back side)

Air inlet louvers

(back side)

NO air inlet

louvers

Air inlet

louvers

Figure A-68: Second module lifting for a short side arrangement (RTM-B-S)

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C. Lift and install the last module. This module should have 3 air inlet sides (two large sides and one short

side). See Figure A-69 for reference.

Air inlet

louvers

Figure A-69: Last module lifting for a short side arrangement (RTM-B-S)

NO air inlet

louvers

(back side)

Air inlet louvers

Air inlet

louvers

Installation

(back side)

D. After all the modules have been installed, proceed to assemble the fan ducts.

E. Remove fan guard.

F. Then cradle/straddle the fan support with the straps (as shown in figure A-70) so you can lift the fan

duct with a crane and assemble it.

Figure A-70: Fan Duct installation for a Modular Tower (RTM-B-S)

Installation

G. Identify each fan duct, they are labeled with a number on the inside of the lower edge. For a correct

installation, this number must match the number on the distribution manifold of the corresponding body section. Now place fan duct 1 on the correspondent receiving flange on top of the Tower; make sure the bolt holes and the marks inside the fan duct and the receiving flange are aligned (see Figure A-71). Secure it with the stainless steel nut and bolt sets supplied by REYMSA.

Figure A-71: Fan Duct alignment for a Modular Tower (RTM-B-S)

H. Follow the same instructions to place the remaining fan ducts (see figure A-72).

Figure A-72: Fan Duct installation for a Modular Tower (RTM-B-S)

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A.6.1 GENERAL PROCEDURE

Follow this procedure to assembly and install an RTGM Cooling Tower. Use drift pins to align bolt holes and use the galvanized bolts provided to torque the sections together. Replace galvanized bolt with stainless bolts after sections are secured together.

A. Upon the arrival of the equipment to its final destination, check for any abnormality or apparent damage

B. After assuring the equipment is received in proper condition, proceed to unload it from the transportation

C. For crane lifting, it’s recommended to use a minimum lifting angle of 60º between the strap and the

A.6. ASSEMBLY INSTRUCTIONS FOR MODULAR TOWERS (RTGM)

Installation

on the packaging before unloading the Cooling Tower from the transportation vehicle.

vehicle, piece by piece, with a crane (using a spreader bar) or forklift of the appropriate capacity, see Figure A-73 for an example.

horizontal. Each section of the Tower has U-bolts for lifting. Place the straps through the U-bolts (as shown in Figure A-73) and use a spreader bar to avoid damage on the upper edge of the Tower. Don’t balance until tensing the straps.

Fan Deck

Basin Section

Lower Body Section

(only RTGM-D & RTGM-E)

Upper Body / Body Section

Figure A-73: Crane lifting for a Modular Tower (RTGM)

D. Remove the plastic wrap that surrounds the Tower and its components, and loosen the nuts and bolts that

keep the body & basin attached to the wooden pallet (those located at the bottom of basin).

E. Before Tower’s assembly, REYMSA recommends to install a steel base structure that supports the Tower’s

F. Tower modules are identified by a label on each

section (basin, body and fan deck of module #1 will

Remove

be labeled “T1”, sections of the module #2 will be labeled “T2”, etc.).

G. Each module of an RTGM model should be assembled

on the floor before installing it on the steel base support.

H. Remove the U-bolts located on the flange of basin

section #1 before installing the body section #1 (see Figure A-74).

Figure A-74: Removing the U-bolts from basin of a

Modular Tower (RTGM)

Installation

I. Assemble body section #1 (for RTGM-B) with the basin section #1, making sure that the bolt holes on

Remove

Figure A-75: Body section installation

for a modular tower (RTGM-B)

Figure A-76: Lower body section

assembly for a modular tower

(RTGM-D & RTGM-E)

Figure A-77: Removing U-bolts

from the Lower Body section for a

modular tower (RTGM-D & RTGM-E)

J. Only for RTGM-D & RTGM-E models: Assemble Lower Body section #1 on top of basin section #1,

make sure that the bolt holes on Lower Body section #1 are aligned with the perforations on basin section #1, then bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA (see Figure A-76).

K. Only for RTGM-D & RTGM-E models: Remove U-bolts from Lower Body section before installing the next

section (see Figure A-77).

L. Only for RTGM-D & RTGM-E models: Place Upper Body section #1 on top of Lower Body section

#1, making sure that the bolt holes are aligned (see Figure A-78). Bolt down and secure the horizontal flanges with the stainless steel nut and bolt sets supplied by REYMSA.

M. Only for RTGM-D & RTGM-E models: Remove U-bolts from top of the Upper Body section (see Figure A-79).

Remove

Figure A-78: Upper Body section installation for

a modular tower (RTGM-D & RTGM-E)

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Figure A-79: Removing U-bolts from the Upper Body

section of a modular tower (RTGM-D & RTGM-E)

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N. RTGM models have a section called “Fan Deck” which is at the top of the Tower (see Figure A-80). The

O. Before the lifting of the Fan Deck Section, remove the safety screen mesh on the floor.

P. Assemble Fan Deck Section with Body Section, making sure that the holes on the Fan Deck Section are

Q. After The Fan Deck has been set in place, proceed to bolt down the Mechanical Support (Hot Dip

Fan Deck with duct contains a gear drive fan and a motor mounted in a structural Hot Dip Galvanized Steel, and a corrosion resistant safety screen mesh.

aligned with the holes on the Body Section. Secure it with stainless steel bolts.

Galvanized Steel) to the Body Section FRP support inside of the Fan Deck Section (see figure A-80).

2 ” x 2

2 ” bolts

2 ” Flat washer

Installation

Mechanical Support (Hot Dip Galvanized Steel)

Body Section FRP Support

2 ” Lock washer

2 ” Nut

2 ” Safety nut

Figure A-80: Fan Deck assembly for an RTGM model.

R. Place the corrosion resistant safety screen mesh on top of the Fan Deck Section (see figure A-81).

Figure A-81: Screen mesh assembly for an RTGM model.

Installation

A.6.2 LARGE SIDE ARRANGEMENT FOR A MODULAR TOWER (RTGM-L)

The following steps are a procedure to install an RTGM Modular Tower with arrangement by the large side.

Follow the same instructions from section “A.6.1 GENERAL PROCEDURE” to assemble the modules.

A. Once the basin and body sections have been assembled, lift the Tower using a crane and a spreader

bar and place it on top of the isolation pad and the steel base structure (see Figure A-82 and Figure A-83). Secure it with the stainless steel nut and bolts sets (supplied by others) as shown on Figure A-84.

RTGM-B-L

RTGM-D-L

RTGM-E-L

Figure A-82: T1 module lifting and installation

(RTGM-B-L)

Steel base support

(supplied by others)

Figure A-84: Typical anchorage for a modular tower (RTGM)

Figure A-83: T1 module lifting and installation

(RTGM-D-L & RTGM-E-L)

4 ANCHORAGE HOLES

(ONE ON EACH CORNER)

1. 3/4” Nut

2. 3/4” Lock Washer

3. 3/4” Flat Washer

4. 3/4” Anchorage Holes

5. Isolation Pad

6. ≈1” Hole

7. 3/4” Flat Washer

8. 3/4” X 3” Bolt (Supplied by others)

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B. Repeat the previous steps to install the remaining modules. Pay attention to the correct module

Installation

arrangement; Each module is labeled alphabetically (module 1: A; module 2: B, etc.) for a proper installation see Figure A-85 to Figure A-88).

▪ First module assembled should be T1 module, with 3 air inlet sides (2 short sides, 1 large side).

▪ Next module(s) must be T2 module, with 2 air inlet sides (short sides).

▪ The final module must be T1 type module, with 3 air inlet sides (2 short sides, 1 large side).

RTGM-B-L

T2 Module

T1 Module

Figure A-85: T2 Module lifting and

installation (RTGM-B-L)

RTGM-B-L

RTGM-D-L

RTGM-E-L

T2 Module

T1 Module

Figure A-86: T2 Module lifting and

installation (RTGM-D-L & RTGM-E-L)

RTGM-D-L

RTGM-E-L

T2 Module

T1 Module

Figure A-87: T1 Module lifting and installation

C. Make sure all the modules are bolted down and secured to the steel support.

T1 Module

(RTGM-B-L)

T1 Module

T2 Module

T1 Module

Figure A-88: T1 Module lifting and installation

(RTGM-D-L & RTGM-E-L)

Installation

A.6.3 SHORT SIDE ARRANGEMENT FOR A MODULAR TOWER (RTGM-S)

The following steps are a procedure to install an RTGM Modular Tower with arrangement by the short side.

Follow the same instructions from section “A.6.1 GENERAL PROCEDURE” to assemble the modules.

A. Lift the first module using a crane and a spreader bar and place it on top of the isolation pad and the

steel base structure. Secure it with the stainless steel nut and bolts sets (supplied by others) as shown on Figure A-89.

B. Follow the same procedure to install the next module. This module should have only two air inlets (on the

large sides). See Figure A-90 for reference.

T1 Module

Figure A-89: First T1 Module lifting and installation for a modular tower (RTGM-B-S)

C. Lift and install the last module. This module should have 3 air inlet sides (two large sides and one short

side). See Figure A-91 for reference.

T1 Module

Figure A-90: Second T1 Module lifting and

installation for a modular tower (RTGM-B-S)

T1 Module

Figure A-91: Last T1 Module lifting and installation

for a modular tower (RTGM-B-S)

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Some RT models for low noise applications feature a Fan Adaptor (see Figure A-92) that differentiate them from the Standard Fan Models, along with sickle fan blades and lower RPM motors.

A.7 LOW SOUND FAN COOLING TOWERS: FAN ADAPTORS

Installation

Fan Duct

Tower Body

Figure A-92: Fan adaptor on a Single Fan Tower

When a Fan Adaptor is required, the assembly procedure for such Tower would be similar to the procedures already described in Sections A.2, A.3, A.5, (depending if it’s a RT, RTU or a Modular Tower respectively) with exception of the steps regarding Fan Duct Installation. Assembly Instructions should be modified as follows:

Fan Adaptor

Figure A-93: Fan adaptor installation

A. Before installing the Fan Duct (see sections A.2, A.3, A.5 for reference), place the Fan Adaptor on the

receiving flange located on top of the Tower (see Figure A-93); make sure the bolt holes and the marks inside the Fan adaptor are aligned (Figure A-94). Then secure it using the stainless steel nut and bolt sets supplied by REYMSA.

B. For the Double Fan, Quadruple Fan and Modular Towers, follow the same instructions described in

previous step to install remaining Fan Adaptors (see Figure A-95 for an example). Each fan adaptor is labeled with a number on the inside of the upper edge; for a correct installation, this number must match the number on the distribution manifold of the corresponding body.

Figure A-94: Fan adaptor alignment

Figure A-95: Fan adaptor 2 installation

on a Double Fan Tower

Installation

Figure A-96: Fan Duct installation on a fan adaptor

C. Then place the fan duct on top of the fan adaptor; make sure the bolt holes and the marks inside the

fan duct are aligned (see Figure A-96 and A-97). Then secure it using the stainless steel nut and bolt sets supplied by REYMSA.

D. If there is more than one fan, follow the same instructions from previous step to install remaining Fan

Ducts (see an example in Figure A-98). Each fan duct is labeled with a number on the inside of the lower edge; for a correct installation, this number must match the number on the corresponding fan adaptor (see Figure A-97).

Figure A-97: Fan Duct aligment

Figure A-98: Fan Duct installation on a fan adaptor

for a Quadruple Fan Tower

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Some application will require multiple towers or basins feeding a common system. Care must be taken when multiple systems are operating together. Please observe the following recommendations:

▪ Install an equalizer line between towers, to maintain the same water level at the basins (see Figure

▪ Install the overflow at the same level for each Tower as well as manual valves at the inlet and outlet of

▪ An isolation valve on the equalizer line between each Tower is recommended for maintenance purposes.

A.8 EQUALIZER LINE INSTALLATION

A-99). Table A-2 shows the recommended sizes for the Equalizer connections.

each Tower.

Table A-2: Equalizer Connection Sizes

MODEL

RT & RTU

819

822

824 827

1616 6” 1619 1622 1624 1627

Figure A-99: Equalizer Line Installation

MODEL

RT & RTU

303

404

505 3” 606

707 708 709 808 809 810 811 812 714 816

Ø SIZE

2”

4”

6”

Ø SIZE

8”

MODEL

RTG

All 8’’

Installation

Ø SIZE

A.9 BOTTOM OUTLET CONNECTION

For applications using a bottom outlet flange, follow this drawing with the instructions for connecting the outlet piping and tightening the bolts. (See Figure A-100).

Cover all bolt heads and flat washers with caulking after all bolts are tightened

Liberally apply the

3M 5200 marine

sealant to Flange,

to fill bolt cavity

Bolt

Flat washer

Rubber grommet

Tower basin

Full Face Gasket ¼”

Outlet Piping & Hardware

Flat washer

Lock washer

Nut

Figure A-100: Bottom outlet connection view

Depressed section of

cold water basin

Notes: All piping must be independently supported. The Tower is not designed for any piping weight load; some deflection in the basin may ocur. All metallic elements must be stainless steel. An isolation valve is recommended (supplied by others).

Flange Bolt Tightening Sequence

Lubricate bolt, nut threads and washer face. Assemble the flange hand tightening all the bolts, then start wrench tightening following the sequence of the numbers. During the sequence, keep any gap between flanges even all around. Tightening bolts with equal pressure, progressively increasing pressure with each complete rotation of the sequence (See Figure A-101 and Table A-3).

Table A-3: Tightening Torque

Installation

Ø SIZE BOLTS

3” 4 20

4” - 8” 8 30

Figure A-101: Tightening sequence

NOTE: Most of the short term bolt preload loss occurs within 24 hours after initial tightening. Rechecking bolt tightness may be necessary.

10” - 12” 12 30

TORQUE

(lb-ft)

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A.10.1 SAFETY OPTIONAL EQUIPMENT

REYMSA offers a variety of optional accessories to help ensure the safety of the personnel operating the Cooling Tower, like ladder, catwalk, handrail, and davit support, hoist, and trolley (See Figure A-102). These accessories are designed for easy assembly with labeling on the point of contact and the part being installed.

A.10 OPTIONAL EQUIPMENT

Installation

RT-D

Following is a general procedure for installation; each Tower will be provided with specific instructions for that particular Tower. Assembly Instructions and drawings are issued with every Cooling Tower.

General installation instruction:

1. The accessories are composed of several parts.

2. Each part or section has a corresponding number (on a sticker) on its inner side, for identification.

3. Every section should be jointed with stainless steel screws/bolts and washers (supplied by REYMSA).

4. Do not mix the different sections to avoid assembly problems.

Figure A-102: Optional equipment by REYMSA

Installation

LADDER WITH STANDARD SUPPORTS

Aluminum ladder with stainless/galvanized steel supports

CATWALK

Non-skid stainless/galvanized steel plate, supported by

stainless/galvanized steel structure.

LADDER WITH OSHA SAFETY CAGE

Aluminum ladder with supports and OSHA cage in

stainless/galvanized steel supports

CATWALK WITH HANDRAIL

Non-skid stainless/galvanized steel plate, supported

by stainless/galvanized steel structure, with safeguard

handrails on each end.

Stainless/galvanized steel railing OSHA construction,

PERIMETER HANDRAIL

including toe guard.

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DAVIT STRUCTURE / DAVIT SUPPORT / HOIST /

TROLLEY

Stainless steel tubular support and galvanized steel

davit structure.

Figure A-103: Safety optional accessories

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A.10.2 VIBRATION SWITCH

Vibration switches provided by REYMSA are shock sensitive mechanisms for shutdown of the Cooling Tower fan motors. These switches use a magnetic latch to ensure reliable operation whenever shutdown protection from damaging shock/vibration is desired. As the level of vibration or shock increases an inertia mass exerts force against the latch arm and forces it away from the magnetic latch causing the latch arm to operate the contacts. Sensitivity is obtained by adjusting the amount of the air gap between the magnet and the latch arm plate.

Note: During severe cold weather conditions, ice can form on the fan blades of Cooling Tower causing excessive vibration. The vibration switch shuts down the motor avoiding potential damage by shock or vibration.

Installation instructions

Firmly secure the unit to the equipment using the base foot and mount to a satisfactory location, see Figure A-104 as an example of a recommended location. The vibration switch is factory mounted (if bought with the Cooling Tower); wiring to the control panel needs to be done in the planned location of the Cooling Towe r.

Installation

CAUTION

Stop fan motor and disconnect all electrical power, tag and lock in off

position before beginning installation.

Failure to do so may result in personal injury or property damage.

Vibration

Switch

Figure A-104: Vibration Switch recommended location

Make the necessary electrical connections to the vibration switch. See Figure A-105 for electrical terminal locations and Figure A-106 for a typical electrical diagram. See section “C.1.2 CONFIGURATION AND START-UP FOR ABB ACH550-UH” for vibration switch connections on VFD.

Contact Rating

5A @480 VAC

NC COM

N02

Spdt Switch

Terminals

N01NC COM N02

Sensitivity

Adjustment

N01

Figure A-105: Internal switches

Figure A-106: Vibration Switch Electric Diagram

Installation

WARNING

Do not exceed voltage or current ratings of the contacts.

Follow appropriate electrical codes/methods when making electrical connections. Make sure that the electrical cable run is secured to the fan motor and is well insulated from electrical shorting. Use of conduit is recommended.

Sensitivity Adjustment

Each vibration switch is adjusted to the specific piece of machinery on which it is installed. After the switch has been installed, the sensitivity adjustment will be increased or decreased so that the switch does not trip during start-up or under normal operating conditions. This is typically done as follows:

▪ Remove all covers, lids, and electrical enclosures.

▪ Press the reset push button to engage the magnetic latch. To be sure the magnetic latch has engaged,

observe latch through the window on the vibration switch (see Figure A-107).

Sensitivity Adjustment

Figure A-107: Vibration Switch detail

▪ Start the fan motor. If the vibration switch trips on start-up, allow the fan motor to stop. Turn the

sensitivity adjustment 1/4 turn clockwise (see Figure A-108): Depress the reset button and restart the fan motor. Repeat this process until the vibration switch does not trip on start-up.

Less Sensitive

More Sensitive

Figure A-108: Sensitivity adjustment

If the vibration switch does NOT trip on start-up, stop the fan motor. Turn the sensitivity adjustment 1/4 turn counter-clockwise. Repeat the start-up/stop process until the vibration switch trips on start-up. Turn the sensitivity adjustment 1/4 turn clockwise (less sensitive). Restart the motor to verify that the vibration switch will not trip on start-up.

▪ At this setting, you should expect the vibration switch will trip when abnormal shock or vibration exist.

▪ Verify the vibration switch sensibility annually to prevent any malfunction.

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A.10.3 BASIN HEATER

REYMSA offers as an optional accessory the basin heater systems designed to provide freeze protection during shutdown or standby conditions. The basin heater system consists of an electric immersion heater(s), a heater control panel and combination level sensor/thermostat well. Electric immersion heaters are sized (kW rating, voltage, phase, and sensor cord immersion length) for the specific Tower, basin size, and climate. Basin heater control panel(s) are self contained and require no control wiring. The control panel should be mounted separately on mounts (provided by others) with close enough proximity for the thermostat sensor capillary tube (approx. 36”) (see Figure A-109).

Control Panel

Immersion Heater

Sensor

Installation

CAUTION

The level sensor must be installed

higher than heater while is energized

to prevent any failure by overheating.

Figure A-109: Basin heater system

Installation instructions

▪ Before installation, verify that power supply voltage and phasing match the heater unit.

▪ Two inch hubs are used to insert the heater and combination level sensor / thermostat

well in the PVC couplings located at the basin (identified with labels). Immersion heater should be located 2 inches (minimum) above the basin bottom. The access port for the combination level sensor/thermostat well should be one inch (minimum) above the heater but below the water level. (See Figure A-110 for recommended distances and mounting).

WATER LEVEL

3” MIN TO 6“ MAX OPTIMUM)

SENSOR

1” MIN

2” MIN

WARNING

Inmension heater should be covered

with at least 2” of fluid, while heater

is energized to prevent any failure by

6” MIN

HEATER MOUNTING

Figure A-110: Recommended basin heater mounting

▪ Install the immersion heater using appropriate sealing tape or compound to prevent leakage at joint.

Sealing material must be suitable for temperature, pressure and material heated. Make sure heater is adequately supported over its immersed length.

▪ Install stainless steel thermostat and level sensor assemble in the upper PVC adaptor.

▪ Mount control panel so thermostat and level sensor cord will reach thermostat well and level sensor

easily.

▪ The heater element connection box is water tight, unused ports must be seal to prevent leakage.

2” MIN

overheating.

Installation

▪ Insert thermostat bulb and secure it with supplied metallic retainer.

▪ Plug level sensor cord onto the stainless steel sensor. Use silicone spray to disburse moisture and ease

installation if required.

WARNING

Do not allow moisture to enter cap before installing on sensor.

▪ Using suitable wire connect heater to panel on “T” terminals, located on right side of contactor in panel

(See Figure A-111).

▪ Using suitable wire from an overload protected disconnect device, connect to the “L” (line) terminals of

the panel contactor, located on the left side of contactor in panel (see Figure A-111).

▪ Set thermostat in panel to meet your requirements.

SENSOR PROBE / CORD ASSY

SHIELDED CABLE

INDEECO CONTROLS

THREE PHASE LINE VOLTAGE

BRANCH CIRCUIT PROTECTION SUPPLIED BY OTHERS:

MAIN

DISCONNECT

SWITCH

L1 L2 L3

FUSING

TRANSFORMER 24V SECONDARY

OPTION “CB” CIRCUIT BREAKER

COOLING TOWER CONTROL PANEL 3 PHASE 1 CIRCUIT (NO DISC SWITCH)

SERIES TL

COMBINATION

LIQUID LEVEL CONTROLLER

TEMPERATURE

YELLOW

RED

YELLOW

CONTROLLING CONTACTOR

L1 L2 L3

G2G1T2T1SH

120

OPTION “F”

SUPPLEMENTARY

FUSING

240/24

(OPTIONAL) HI-LIMIT PUMP

INTERFACE, ETC. SUPPLIED BY OTHERS

INSTALL JUMPER IF

NO REMOTE SAFETY

INTERLOCKS

OPTIONAL THERMAL CUTOFF (TYP)

DELTA OR WYE CONNECTED

HEATHER #2 (IF REQUIRED)

HEATHER #1

Figure A-111: Basin heater control panel diagram

WARNING

Improper operation, maintenance or repair of basin heater can be dangerous and could

result in injury or equipment damage.

Safety precautions and warnings are provided in section “D.6 BASIN HEATER “

of this manual.

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SOLENOID VALVE

A.10.4 ELECTRIC WATER LEVEL CONTROL SYSTEM

Electric water level control system is an optional accessory offered by REYMSA includes water level controller, stilling chamber, and solenoid valve for water make up (see Figure A-112 & Figure A-113).

Installation

Figure A-112: Electric water level control system

Reference - BLACK

Low Alarm - BROWN

Fill Level ON - WHITE

Fill Level OFF- RED

High Alarm - GREEN

5/8" Hole (2)

Operating range

M.O.L

SENSOR

Purge flange

120 VAC

50-60 Hz

ON-OFF

LOW

ALARM

FILL

ALARM

LEVEL

TO LOADS

120 VAC, 30 AMP, MAX.

VALVES

HIGH

Water Supply

CONTROLLER

LOW

HIGH

POWER

FILL

ALARM

TESTING

PRESS TO TEST

Sensor Low Voltage Raceway

Internal Relays (N.O.) are rated 30 amps at 250VAC.

FILL Level Control: ON - OFF High Level Alarm

Low Level Alarm

AC Power Input

Sensor Wire

Figure A-113: Electrical Connections & Water Level Control Parts

Sensor assembly installation

1. Assemble the waterline control in a convenient location where splashing water or dew will not affect the unit. The unit and the input/output wiring must be securely attached to the mounting surface.

2. The sensor assembly (Figure A-113) must be made so that the end of the PVC pipe is below the minimum level of water to be maintained.

3. Secure the sensor assembly to the basin of the tower with the two ½" npt fittings.

NOTE: In the PVC pipe there are two small 5∕ " vent holes near the top of the housing. Be certain these two vent holes are not covered or obstructed in any way. They must be clear to allow the sensor assembly to function properly.

4.- The probe assembly is supplied with the sensor cable pre-installed. Be sure to route the cable in an appropriate place and shorten the length if it is determined if necessary. The cable can be shortened to a more suitable length as needed.

NOTE: The sensor wires must not be spliced in order to increase the length.

5.- After connecting the cable to a tight PVC compression connector, install it at the bottom of the Waterline WLC casing. The output control cables are connected to the output terminals of the relays using the user supplied ¼” plug connector.

NOTE: the rating on the relay should not be exceeded.

6.- Use water tight PVC conduit for all connections and route the location desired by the end user. If the depth of the probes need to be seen while the sensor assembly is installed mark the sensor probe levels on the outside of the pipe with a “Sharpie”. The center of the nominal fill level is marked with a black button in the outer pipe.

Path to Ground

Installation

A.10.5 MOTOR SHAFT GROUNDING RING

Bearing-related problems are among the most common causes of motor failures. The VFD induced shaft voltages are capacitively coupled from stator to rotor through parasitic capacitance and create the possibility of bearing currents.

This problem can be solved grounding the motor shaft with the Shaft Grounding Ring (optional accessory, see figure A-114) to provide a path of least resistance to ground and divert current away from the motor’s bearings.

The Motor Shaft Grounding Ring conducts harmful shaft voltages away from the bearings to ground. Voltage travels from the shaft, through the conductive microfibers, through the housing of the ring, through the hardware used to attach the ring to the motor, to ground (see figure A-115).

Figure A-114: Motor Shaft Grounding Ring

Figure A-115: Motor Shaft Grounding Ring Path to Ground

CAUTION

▪ Care should be taken when handling the ring to prevent fiber damage during

installation.

▪ Do not use thread lock to secure the mounting screws as it may compromise the

conductive path to ground.

CAUTION

▪ Motor must be grounded to common earth ground with drive according to applicable

standards.

▪ Rings should not operate over a keyway because the edges are very sharp.

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A.11.1 LEVELING AND TOWER SUPPORTS

REYMSA Cooling Towers should always be installed on a level surface and adequately supported. REYMSA recommends supporting Cooling Towers on an isolation pad and a structural base; care must be taken to ensure that the basin sump (the lowest portion of the Tower basin) is completely supported (see Figure A-116). Always make sure the structural base will support the Tower’s operational weight. Also verify that such support has the proper dimensions; always refer to factory certified drawings for construction purposes. An example of a recommended base support is shown in “APPENDIX C: EXAMPLE OF STRUCTURAL BASE FOR A REYMSA COOLING TOWER”; consult your REYMSA representative for more specifics.

A.11 TOWER SET-UP

Installation

Figure A-116: Example of base support

A.11.2 PIPING CONNECTIONS

All connections to the Cooling Tower module must be field fitted after Tower installation to prevent stress on the Tower. All piping should be self-supported and NEVER supported by the Cooling Tower.

CAUTION

Tower should be installed on a level surface and adequately supported.

Failure to do so could result in Cooling Tower and property damage.

CAUTION

Piping should not be supported by the Cooling Tower at any time. Failure to

do so could result in Tower and property damage.

Installation

Piping should be adequately sized in accordance with accepted engineering principles. All piping and other external equipment must be self-supported, totally independent from the Cooling Tower.

Also, in case your area experiences extreme cold weather, care must be taken to protect all piping located on the exterior of the building from freezing (refer to section “C.4.1 COLD WEATHER OPERATION”). See Figure A-117, Figure A-118 and Figure A-119 for general scheme of the different connections in REYMSA Cooling Towers.

RT-A, RT-B & RT-C RT-D

1. Fan Section

2. Hot Water Inlet

3. Body Section (Rt-A, Rt-B, Rt-C)

4. Upper Body Section (Rt-D)

5. Access Door

6. Lower Body Section (Rt-D)

7. Louvers

8. Basin Section

9. Water Make-Up

10. Purge

11. Drain

12. Basin Heater

13. Temperature Sensor

14. Overflow

15. Cold Water Outlet

16. Steel Base Support (Supplied By Others)

Figure A-117: Pipe connections for a Single Fan Tower

RT-D

1. Fan Section

2. Hot Water Inlet

3. Access Door

4. Body Section (Rt-A, Rt-B, Rt-C Models)

5. Lower Body Section (Only In Rt-D Models)

6. Louvers

7. Basin Section

8. Water Make-Up

9. Anchorage Holes

10. Purge

11. Drain

12. Basin Heater

13. Temperature Sensor

14. Overflow

15. Cold Water Outlet (Back Side)

16. Steel Base Support (Supplied By Others)

Figure A-118 Pipe connections for a Double Fan Tower (RT-D)

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RT-D

Installation

1. Fan Section

2. Hot Water Inlet

3. Body Section (Rt-A, Rt-B, Rt-C Models)

4. Lower Body Section (Only In Rt-D Models)

5. Access Door

6. Louvers

7. Basin Section

8. Cold Water Outlet

9. Anchorage Holes

10. Steel Base Support (Supplied By Others)

11. Water Make-Up (Back Side)

12. Overflow (Back Side)

13. Temperature Sensor (Back Side)

14. Basin Heater (Back Side)

15. Drain (Back Side)

16. Purge (Back Side)

Figure A-119 Pipe connections for a Quadruple Fan Tower (RT-D)

Configuration and Tower parts

▪ Hot water inlet

The Hot Water Inlet delivers warm water to be cooled from the process to the Cooling Tower distribution system. A PVC pipe flange is provided for the inlet water so that a field installed butterfly valve (supplied by others) can be installed. REYMSA recommends installing this valve in order to isolate the Tower on multiple Tower installations and also provides a means of adjusting and/or balancing the flow through the Cooling Tower. A ¼” NPT adaptor is provided in the piping inlet between the PVC flange and the Cooling Tower so that a field supplied pressure gauge with a valve can be installed. This gauge is required to determine when the proper amount of water is flowing through the Tower. The gauge should be selected with a 0 to 15 psi range.

▪ Cold water outlet

The Cold Water Outlet serves the process with the cooled water from the Tower. REYMSA recommends installing a valve (supplied by others) at the Cold Water Outlet to regulate flow from the Tower and also allow Tower isolation.

▪ Make-up

Make-up water needs to compensate the water losses due to evaporation, drift and purge. To control makeup water flow, a mechanical float valve is included by REYMSA as a standard feature. A NPT connection is provided and marked as Make-up Water. Electric automatic fill valve with control is available as an optional (refer to section “A.10.4 ELECTRIC WATER LEVEL CONTROL SYSTEM”).

▪ Overflow

When excess water enters the basin, it automatically flows into the Overflow and is wasted. The Overflow connections are NPT threaded.

Installation

▪ Purge

Purging is done to remove circulating water high in dissolved solids concentration. The purge connection is NPT threaded and must have a valve (supplied by others).

▪ Drain

The drain is used to remove all the circulating water for Tower maintenance and cleaning. The drain connection is NPT and must have a valve (supplied by others).

▪ Equalization

The equalization connection is used to maintain equal water levels when the system consists on more than one basin (see Figure A-120). REYMSA recommends installing a valve (supplied by others) at the Equalization line to regulate flow and allow Tower isolation. Also see section “A.8 EQUALIZER LINE INSTALLATION”.

Figure A-120: Example of equalization line

A.11.3 WIRING

All electrical work should be performed by qualified personnel and in accordance to applicable electrical codes, best practices and safety standards. All wiring must conform to Federal, State and Local Codes.

CAUTION

Electrical wiring must be handled ONLY by qualified personnel. Failure

to do so may result in severe personal injury or property damage.

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A.11.3.1 PROCEDURE TO WIRE THE FAN MOTOR

REYMSA suggest that after extended shut down, the model should be checked with insulations tester prior to restarting motor.

1. To gain access to the motor, remove the fan guard on top of the fan duct.

2. Remove the cover to the motor junction box.

3. Wire the motor following the wiring diagram in the fan motor nameplate. A piece of flexible conduit

4. Rotate the fan by hand to verify that it freely rotates. The fan should not touch the side of the Tower

5. Place the junction box cover on the motor and fan guard on the fan duct. Select motor starter and

As optional equipment, REYMSA recommends a vibration cut-off switch to shutdown the electrical motor in case of excessive vibrations caused by malfunctioning of the fan (see section “A.10.2 VIBRATION SWITCH” for installation guidelines).

Installation

is installed to facilitate wiring. Ensure that the motor is properly grounded.

and there should be no noises coming from the motor.

disconnecting device for the motor: size, voltage and FLA; in accordance with federal, state and local electrical code. The three-phase motor control circuit must contain:

▪ A motor controller (motor starter) with over-current protection.

▪ A motor disconnecting device must be installed with lockable means to disconnect the main power

source.

▪ A ground fault protection for the motor.

CAUTION

Do not proceed without disconnecting all electrical power, tag and lock in the off position

for the motor and pump.

Use an OSHA approved ladder and follow manufacturer’s instructions for proper use.

Failure to do so may result in personal injury or property damage.

WARNING

FAN MOTOR

Use a soft-starter or VFD as motor starter.

When using a Variable Frequency Drive (VFD), is not uncommon to exhibit resonant frequencies that result in vibrations, damaging all components of the system. To prevent premature failure, the VFD must be programed to “skip” resonant frequencies that cause

unusual rumbling or grinding noise.

WARRANTY VOID

If fan motors are cycling (ON-OFF) at full voltage controlled by temperature signal

or heat load demand.

Rapid ON-OFF cycles can damage the fan.

B. START-UP

Before starting the pumps and running water through the Tower, the piping system should be flushed out to remove any debris which may have gotten into the pipe during installation. Also, inspect the bottom section of the Tower and remove any debris, which may have accumulated during installation. For Start-up, proceed as follows:

Start-Up

A. Open make-up valve(s) and allow basin(s) and piping to fill to the Tower overflow level.

B. Check all flanged connections and piping for leaks.

C. Bleed air from piping by opening purge valve at pump until water flows out in a steady stream without

D. Close purge valve.

E. Fill completely the Tower’s basin with water (without overflowing it).

REYMSA Cooling Towers provides a mechanical float valve as standard (see Figure B-1 or refer to “APPENDIX B: WATER MAKE-UP FLOAT VALVE”); an electric valve for automatic flow control is offered as optional. Use the following instructions to adjust the make-up water mechanical float valve on the basin section of the Tower to produce the highest water level without overflowing the Tower.

B.1 FILLING SYSTEM WITH WATER

interruption.

B.2 CONTROLLING WATER LEVEL

WARRANTY VOID

If inlet pressure to the mechanical float valve exceeds 50 psi.

Figure B-1: Float valve installation

A. Remove Air Inlet Louvers within the area where float valve(s) is located.

B. Close make-up valve(s).

C. Check basin water level. The proper water level should be within the range of the operating level.

D. Loosen the nut on the adjustment bolt, and then loosen the bolt itself. Do not remove the bolt.

E. Rotate arm and stem to desired water level.

F. Tighten adjustment bolt and nut.

G. Restore water supply and verify that the water level is at the desired operating level.

H. Reinstall Air Inlet Louvers.

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A. Before starting the pump(s), ensure that the suction piping is completely full of water.

B. Open inlet water valve to approximately 30% and start one pump.

C. Allow system to operate until the float valve closes to allow the make-up water to replenish the water

D. If the pump surges, shut off the pump, close the make-up valve, and adjust the float valve to a higher

E. Open the make-up valve to the full open position.

B.3 PUMP

Start-Up

CAUTION

▪ Refer to pump’s IOM manual to ensure pump proper installation, operation and start-up.

▪ Do not run the pump(s) dry or when the suction is not full of water; damage may occur.

▪ Do not start pump(s) with the valve fully-open; there is risk of overflowing the Cooling Tower.

removed from the basin by the pump.

setting. Repeat Steps A and B.

F. Verify the operating level in basin to be in range, after the system has equalized.

G. If there are more than one pump, start remaining pumps one at a time by repeating steps D and E.

H. If the basin overflows, close the make-up valve, lower the float valve setting, and repeat Steps A to F.

In case of experiencing problems with the pump(s), refer to Pump’s IOM manual.

B.4. GEAR REDUCER

A. Check all fittings on the gear reducer to ensure that there are no visible leaks.

B. Make sure that the gear reducer is filled with the proper amount and type of lubricant.

C. The initial oil level should be to the middle of the oil level sight gauge and should be maintained so that

the oil level is always visible in the sight gauge window when the unit is stationary, level, and the oil is at ambient temperature.

D. If shimming is required, take precautions to prevent distortion of the housing. Align driver and gear

reducer to obtain parallel and angular alignment. Recheck alignment after two weeks of operation.

E. For VFD see section “C.1 FAN CONTROL - VFD“.

F. For gear reducer maintenance refer to section “D.5 GEAR REDUCER”.

CAUTION

When using a variable frequency drive (VFD), do not operate gear drive below 450 RPM

▪ The original oil should be replaced after 500 hours of operation or four weeks,

▪ After the initial oils change, oils should be changed every 2500 hours or every six months,

fan motor speed.

CAUTION

whichever comes first.

Start-Up

A. Before starting fans for first use, ensure that the fan rotates freely, each fan should have a minimum tip

B. Verify that all fan guards are in place and secure.

C. Start Cooling Tower fan(s) and make sure they are rotating as indicated on the fan duct and that air is

D. Verify that amperage of the motor does not exceed the amperage shown on the data plate. If this

E. The sound data included in engineering data sheet is only a theoretical calculation under free-field

B.5 FAN

WARNING

▪ Never operate the fan when the access door or the fan guard is removed.

▪ Never remove access door while fan is in operation.

clearance of no less than ¼ inch and no larger than ¾ inch. Although tip clearances are quality checked before releasing any REYMSA Cooling Tower, reinspect them to ensure there was no movement during shipping. Report any non-comformance to your REYMSA Representative.

entering at the bottom of the Tower and discharging through the fan duct. Reverse rotation of the fan motor if required. For units with VFDs, refer to “C.1 FAN CONTROL - VFD”.

happens the pitch of the fan blades must be adjusted to decrease the amperage, but not less than 10% of the value described on the data plate. To adjust the pitch of the fan blades, call your local REYMSA representative for assistance.

conditions and should be used only as guideline. Any reflections or obstructions impact directly the sound level.

Never:

▪ Operate the fan when the access door is removed. ▪ Remove access door while fan is in operation. ▪ Operate the fan when the fan guard is removed.

WARNING

FAN MOTOR

Use a soft-starter or VFD as motor starter.

unusual rumbling or grinding noise.

WARRANTY VOID

If fan motors are cycling (ON-OFF) at full voltage controlled by temperature signal

or heat load demand. Rapid ON-OFF cycles can damage the fan.

WARNING

In Double Fan Cooling Towers (per cell), ensure to Start-Stop the fan motors at the same

time. If you need more information, please contact REYMSA.

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C. OPERATION

Variable Frequency Drives (VFDs) are the preferred method for both fan motor and capacity control on Cooling Towers. Using a VFD in Cooling Tower applications has advantages over traditional single or two speed motor control. The primary purpose of controlling a motor with a VFD is to save energy and operating cost. In addition, it reduces the mechanical and electrical stress on the motor and mechanical equipment.

Applications utilizing variable frequency drives (VFDs) for the fan motor control must use inverter duty motors built in compliance with NEMA Standard MG-1, part 31. All Premium efficiency motors used by REYMSA Towers allow to work with VFDs.

Start-Up

C.1 FAN CONTROL - VFD

CAUTION

TEFC and TEAO motors used for typical Cooling Tower applications may lose

proper cooling at very low fan or VFD speeds. REYMSA recommends

a minimum fan operation at 25% of nominal speed.

WARRANTY VOID

▪ If the motor is operated below 25% of nominal speed. ▪ If gear box is operated with motors working below 450 RPM.

When using a Variable Frequency Drive, REYMSA recommends a Motor Shaft Grounding Ring (optional accessory) to prevent damage on the motor bearing. See section “A.2.8.5. MOTOR SHAFT GROUNDING

RING” for more information.

C.1.1 PARAMETERS FOR VFD OPERATION

Most VFD brands include protections for overcurrent, overheating, unexpected failures, in addition to a soft starting processes by means of acceleration and deceleration ramps, which offers an increase of the life of the motor and fan.

REYMSA recommends using the following basic operation parameters on their Cooling Towers to ensure a long life expectancy.

Maximum Frequency

Usually 60 Hz. This data is shown on the motor data plate.

Minimum Frequency

REYMSA recommends operating motor at 25% of nominal speed.

FREQ

MAX

FREQ

OPERATION RANGE

MIN

FREQ

Minimum speed for gear driven models must be 450 RPM.

(RPM on motor plate) (RPM)

Minimum operating frequency can be calculated:

Min Freq =

Figure C-1: VFD operation range.

Nominal Vel * 0.25 = Min Vel

60 Hz * Min Vel

Nominal Vel

Start-Stop Methods

Soft-start is the prefered method for start-stop fan motor by means of 30 seconds acceleration and deceleration ramp.

FREC.

MAX FREQ

Operation

Acceleration time is the time required of output frequency from 0 Hz to 60 Hz maximum frequency.

Deceleration time is from a frequency decrease to 0 Hz.

Operation Method

The VFD motor will be modulated from minimum to maximum speed based on the output from a PID loop.

VFD shall remain ON as long as there is a difference in temperature between the set point and the actual temperature.

MIN FREQ

0 Hz.

212°F

32°F

30 s ACELERATION TIME

Figure C-2: Start-stop method.

VFD

Figure C-3: Operation method.

RANGE RTD

TEMPERATURE

VFD ON

@ MIN FREQ

ERROR

30 s DECELERATION TIME

PID MOTOR

SENSOR

ACTUAL TEMP

ACTUAL

TEMP.

20%

Figure C-4: Measuring range RTD.

C.1.2 CONFIGURATION AND START-UP FOR ABB ACH550-UH

REYMSA recommends the next connection diagram for ABB ACH550-UH:

1 SCR 2 AI1 3 AGND 4 10V 5 AI2

START

6 AGND 7 AO1

BRIDGE

BRIDGE BRIDGE

8 AO2 9 AGND

10 24V 11 GND 12 DCOM 13 DI1 14 DI2 15 DI3 16 DI4 17 DI5 18 DI6

Figure C-5: Recommended Connection Diagram for ABB ACH550-UH.

SIGNAL

RTD

4-20 mA

0-10 V

BRIDGE

VIBRATION SWITCH

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See next table for configuration and start-up:

Select MENU to enter the main menu. Select ASSISTANTS with the Up/Down buttons and select ENTER. Scroll to COMMISION DRIVE with the Up/Down buttons and select ENTER. 9905 MOTOR NOM VOLT: DATA PLATE 9906 MOTOR NOM CURR: DATA PLATE 9907 MOTOR NOM FREQ: DATA PLATE 9908 MOTOR NOM SPEED: DATA PLATE 9909 MOTOR NOM POWER: DATA PLATE 9902 APPLIC MACRO: (4) CLNG TWR FAN Do you want to use mechanical HAND-OFF-AUTO switch? YES EXT1 (HAND) Start command must be connected to DI1 and EXT2(AUTO) Star command to DI6. OK Do you want to continue with Reference set-up? CONTINUE 1103 REF1 SELECT: (2) AI2 1302 MINIMUM AI2: 20% 1305 MAXIMUM AI2: 100% 1104 REF1 MIN: 15Hz 1105 REF1 MAX: 60Hz 1106 REF2 SELECT: (19) PID1OUT 1107 REF2 MIN: 20% 1108 REF2 MAX: 100% 2007 MINIMUM FREQ: 15Hz 2008 MAXIMUM FREQ: 60Hz Do you want to continue with start and stop set-up? CONTINUE 1001 EXT1 COMMANDS: (1)DI1 1002 EXT2 COMMANDS: (6)DI6 2101 START FUNCTION: (8)RAMP 2102 STOP FUNCTION: (2)RAMP 2202 ACCELER TIME 1: 30.0 s 2203 DECELER TIME1: 30.0 s Do you want to continue with protections set-up? CONTINUE 2203 MAX CURRENT: 15% UP OF NOM CURRENT IN DATA PLATE 2014 MAX TORQUE SEL: (0) MAX TORQUE 1 Configure Run & Start Enable commands? YES 1601 RUN ENABLE: (1) DI1 1608 START ENABLE 1: (4) DI4 1609 START ENABLE2: (5) DI5 Configure Emergency stop commands? YES 2109 EMERG STOP SEL: (0) NOT SEL 2208 EMERG DEC TIME: 1.0 s Configure Fault functions?: NO Configure Autoreset functions?: NO Do you want to continue with const speeds set-up? SKIP Do you want to continue with PID control set-up? CONTINUE Do you wish to use the PID controller? YES (activate PID) Select setpoint source: INTERNAL On the next screen select the transmitter’s measurement units. OK 4006 UNITS: (9)°C 4007 UNIT SCALE: 1 On the next two screens select the transmitter’s output range. OK 4008 0% VALUE: 0.0 °C 4009 100% VALUE: 100.0°C 4011 INTERNAL SETPNT: DESIRED COLD WATER TEMPERATURE Select transmitter’s range: 4-20mA(2-10V) As feedback increases drive speed should: INCREASE Do you want to change PID tunings? YES 4001 GAIN: 10 4002 INTEGRATION TIME: 30.0 s

Operation

PARAMETER VALUE

Operation

4003 DERIVATION TIME: 0.0 s 4004 PID DERIV FILTER: 1.0 s 2202 ACCELER TIME 1: 30.0 s 2203 DECELER TIME 1: 30.0 s Do you want to use Sleep function?: NO Do you want to continue with low noise set-up? SKIP Do you want to continue with panel display set-up? CONTINUE Configure Process Variable 1? YES 3401 SIGNAL1 PARAM: (102) SPEED 3402 SIGNAL1 MIN: 0 rpm 3403 SIGNAL1 MAX: 1000 rpm 3404 OUTPUT1 DSP FORM: (9) DIRECT 3405 OUTPUT1 UNIT: (7) rpm 3406 OUTPUT1 MIN: 0 rpm 3407 OUTPUT1 MAX: 1000 rpm Configure Process Variable 2? YES 3408 SIGNAL2 PARAM: (128) PID 1 SETPNT 3409 SIGNAL2 MIN: 0.0 °C 3410 SIGNAL2 MAX: 100.0 °C 3411 OUTPUT2 DSP FORM: (9) DIRECT 3412 OUTPUT2 UNIT: (9) °C 3413 OUTPUT2 MIN: 0.0 °C 3414 OUTPUT2 MAX: 100.0 °C Configure Process Variable 3? YES 3415 SIGNAL3 PARAM: (130) PID 1 FBK 3416 SIGNAL3 MIN: 0.0 °C 3417 SIGNAL3 MAX: 100.0 °C 3418 OUTPUT3 DSP FORM: (9) DIRECT 3419 OUTPUT3 UNIT: (9) °C 3420 OUTPUT3 MIN: 0.0 °C 3421 OUTPUT3 MAX: 100.0 °C Do you want to continue with timed funcs set-up? SKIP Do you want to cont. With relay and analog output set-up? SKIP Do you want to copy parameters to panel? YES Parameters upload successful OK

Note: Refer to VFD user manual for more information.

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Water distribution is accomplished by a non-rotating, low pressure spray nozzle system, designed to provide a uniform water distribution for a specific flow rate (see Figure C-6). Take in account the following recommendations:

▪ The operating flow rate of the Cooling Tower must be as close as possible to the design flow rate. A

▪ The normal operation range of spray nozzles is 2-10 psi. REYMSA recommends maintaining water inlet

▪ If a VFD is installed, set the VFD to control the Cooling Tower fan to the desired process water temperature.

▪ Never operate temperatures above the allowed level for each material; failure to do so may result

C.2 WATER DISTRIBUTION SYSTEM

Operation

different flow rate, whether is lower or higher, will affect the Cooling Tower performance.

pressure between 4-8 psi to achieve a proper water distribution. Operation below this range will cause the nozzle to produce smaller than expected spray cone, lowering fill´s performance. Operation of the nozzle above this range may cause flow-induced vibration, which can contribute to nozzle blowout from the pipe adapter. Both conditions will negatively affect Cooling Tower performance. Never operate the nozzle continuously at pressures over 10 psi.

in damaged to the internal components. Refer to Table C-1 for the Maximum Continuous Operating Temperatures of the materials REYMSA uses for its fill media.

Water Distribution System

Manifold

Spray Nozzles

Figure C-6: Water distribution system schematic drawing

FILL MEDIA MATERIAL

PVC 140°F (60°C)

HPVC 150°F (66°C)

PP 175°F (80°C)

ALUMINUM > 175°F (80°C)

Table C-1: Maximum Operating Temperatures for Different Fill Media

MAXIMUM CONTINUOUS

OPERATING TEMPERATURE

Materials

CAUTION

WATER

DISTRIBUTION

SYSTEM

MATERIAL

PVC 10 PSI

Table C-2: Maximum operating pressure

MAXIMUM

CONTINUOUS

OPERATING

PRESSURE

Operation at higher temperatures than temperatures shown on Table C-1

will damage the fill media.

CAUTION

Operation at pressure greater than 10 PSI may cause

improper operation and damage to the distribution system.

Operation

C.3 WATER TREATMENT AND WATER CHEMISTRY

The Cooling Tower requires a water treatment program to ensure the efficiency of the system operation, extending its service life. A qualified water treatment company should design a specific program for the Tower best operation.

A Cooling Tower is part of a carefully engineered heat exchange system. Any film or deposit which forms on the waterside heat exchange surface reduces the heat exchange efficiency of the system. System reliability can be sharply reduced by maintenance shutdowns required for removal of waterside deposits, replacement of spray pump shaft seals damaged by suspended particles in the water, or repairs required by waterside corrosion failures.

A water conditioning program must always address the following areas to maintain system reliability:

▪ Suspended solids

▪ Scale formation

▪ Microbiological contamination

▪ Corrosion

▪ Air Contamination

For optimal heat transfer and Tower operation, the water chemistry of the recirculating water should be maintained within the guidelines listed in Table C-3.

Table C-3: Water chemistry guidelines

WATER CHEMISTRY GUIDELINES

CHARACTERISTIC CONCENTRATION

pH 6.5 - 9 Hardness (as CaCO3) 30 - 500 ppm Alkalinity (as CaCO3) 500 ppm max. TDS (Total Dissolved Solids) 1500 ppm max. Chlorides (as Cl) 450 ppm max. Silica (as SiO4) 180 ppm max. Sulfates (as SO4) 250 ppm max. Phosphates (as PO2) 15 ppm max.

Note

Risk of scale will be greatly reduced by following this guidelines.

These values do not represent the chemical resistance of FRP.

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C.3.1 SUSPENDED SOLIDS

Sedimentation of solid materials occurs in the Tower basin, pipes and equipment as a product of corrosion, mill scale particles, silt or fly ash scrubbed from air by the Cooling Tower. It is recommended that every Cooling Tower is fitted with a solid separator. REYMSA offers a centrifugal separator as a design option for suspended solids control (see Figure C-8).

Control Panel

Centrifugal

Separator

To the

System

Operation

Pump

Filter

Figure C-7: Filtration system

From the System

Pump

Process

C.3.2 SCALE FORMATION

Scale is the most widely-known water-caused trouble. Indeed the term is so familiar that it is often applied incorrectly to all solid accumulations in water systems. Scale is but a single type of fouling; others being sedimentation, corrosion, slime, etc. A true scale forms by crystallization of a dissolved salt when its concentration exceeds its solubility.

The most common formed scale consists of:

▪ Calcium Carbonate (lime scale)

▪ Calcium Sulfate and silica

▪ Algae growth, slime, and other micro-organisms

C.3.3 BIOLOGICAL GROWTH

Slime and algae in cooling systems are frequently spoken of and handled as though they were a single word and single problem. Algae require sunlight for their growth, which can be prevented by reducing the sunlight exposure. Minimizing the development of algae and bacterial slimes is important because they reduce the heat transfer, decrease cooling water flow, localize corrosion, and serve as a mortar for permitting rapid build-up of deposits consisting of an agglomeration of sediments, corrosion products, and scale.

The aim in cooling water treatment is microbiological control to avoid significant slime or algae growth, not the almost impossible goal of maintaining circulating water completely sterile. The many treatment chemicals available for microbiological control in Cooling Towers include chlorine and other compounds which yield available chlorine, some of these compounds have broad spectrum effectiveness and others are specific for a more limited range of organisms

Periodic measurement of the overall bacterial population of the water is recommended to maintain a biological control.

Finally, whenever flagrant microbiological growths develop, chemical or mechanical cleaning must be included along with micro biocide treatment in any effective program for promptly re-establishing microbiological control.

Cooling Tower must be cleaned periodically to prevent the growth of bacteria

including legionella pneumophica, to avoid the risk of sickness or death.

CAUTION

Operation

C.3.4. CORROSION

Corrosion is a process of metal dissolution usually by oxidation; this process provokes degradation on the metal surface, creating pits or even holes on it. Corrosion of system components shortens its life, reducing operational reliability. However, since REYMSA Cooling Towers are constructed of FRP, corrosion is not an issue for the tower.

C.3.5. AIR POLLUTION

A Cooling Tower draws air as a part of its operation, it can attract a variety of particles on it, interfering with its performance. Do not locate the unit close to smoke stacks, discharge ducts, vents or gas flue exhausts.

C.4 MAKE-UP WATER REQUIREMENTS

Make-up water is added to compensate for the volume of water lost throughout evaporation, drift and blowdown. Evaporation accounts for the largest loss of water from a water cooling system and is independent of system’s flow for typical operating temperatures. To achieve one ton of cooling, a Tower will evaporate about 1% of process water each minute, per every 10°F range.

As this water evaporates, it leaves behind any dissolved solids it may have been carrying. If allowed to go unchecked, these solids will eventually precipitate out or scale the heat transfer surfaces. To aid in controlling dissolved solids a portion of the process water must be discharged from the system and replaced by fresh make up water thus diluting the remaining process water. Blow-down or bleed are common names given to this discharge.

Determining the amount of blow-down required is heavily influenced by the quality of water used for make up. As the dissolved solids content of the make up water increases the need for higher blow-down rates will also increase. Cycles of concentration are used in establishing the blow-down rate. The value of the cycles of concentration is the ratio between the process water concentration of dissolved solids and the make up water concentration of dissolved solids. A chemical analysis by a water treatment professional is the recommended method for determining the optimum cycles of concentration for the Cooling Tower water.

Water is also lost from the Cooling Tower itself in the form of liquid droplets, which become entrained in the Cooling Tower air stream and discharged with it. Known as drift, the amount of water blown out of the Tower is dependent on the Tower’s eliminators and the flow through the Tower. Generally 0.001% of the Tower flow rate may be used as an estimate for drift in a counter-flow Tower.

In Table C-4, there is an example which may be used for estimating water usage in a typical fully loaded system, with a 10°F temperature drop through the Tower. Flows are represented as a percentage of the total flow through the Cooling Tower.

Table: C-4 Cycles of concentration

CYCLES OF

CONCENTRATION (CC)

2 1.0% 0.001% 0.999% 2.0%

3 1.0% 0.001% 0.499% 1.5%

EVAPORATION DRIFT PURGE MAKE-UP

% PURGE =

% EVAPORATION - % DRIFT

CYCLES OF CONCENTRATION - 1

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C.5. COLD WEATHER OPERATION

Units installed in a cold weather operation environment must use a freezing protection system; Cooling Tower operates in ambient temperatures 32°F or below there is a risk of the Tower’s water freezing. Build-up of ice can strongly affect air flow and lead to components failure.

If the Cooling Tower will operate in a freezing climate, take into account the following precautions to help lessen the chances of damaging property due to freezing water:

▪ Assure adequate air flow; risk of recirculation must be minimized. Recirculation can result in inlet louvers

▪ Drain water from the Tower when not in service for any extended period of time.

▪ All external piping that is not drained must be heat traced and insulated, as well as system accessories

▪ Maintain the highest water temperature in the Tower system that will satisfy the cooling load. Outlet

▪ Reduce Tower temperature by cycling fans, cycle the fans off or modulate fan speeds (no lower than

Operation

and fan freezing.

like water level control, make-up water valve, spray pump, etc.

water temperature must be maintained at a minimum of 40ºF. The higher the water temperature is, the lower the ice formation potential.

50%) to maintain water temperature above freezing. Do not operate fans with air temperatures below freezing. It is recommended the use of a variable frequency drive (VFD) to allow the closest control of the leaving water temperature and the fan speed (refer to section “C.1 FAN CONTROL - VFD).

▪ When using a VFD, it is recommended that the minimum speed be set at 50% of full speed to minimize

ice formation. Low leaving water temperature and low air velocity through the unit can cause ice formation.

▪ Inspect frequently the Tower and the area around the Tower for unacceptable amounts of ice formation.

If ice formation is found, determine where the water is coming from and take corrective action.

▪ A simple way to manage ice build-up is cycling off the fan motors while keeping the pump on. During

a period of fans idle operation, warm water is entering and flows over the unit and helps melt the ice that has formed in the fill, basin or louver areas.

WARNING

FAN MOTOR

Use a soft-starter or VFD as motor starter.

unusual rumbling or grinding noise.

If fan motors are cycling (ON-OFF) at full voltage controlled by temperature signal

WARRANTY VOID

or heat load demand. Rapid ON-OFF cycles can damage the fan.

WARNING

In Double Fan Cooling Towers (per cell), ensure to Start-Stop the fan motors at the same

time. If you need more information, please contact REYMSA.

Operation

C.5.1. BASIN HEATER OPERATION

REYMSA recommends the use of an Immersion Heater System in the Tower basin, designed to provide freeze protection. Such system consists on heating element (3-12 kW), control panel, temperature and level sensors (refer to section “A.10.3. BASIN HEATER”).

▪ Visually check that the water level is above sensor electrode. The heater element should be covered with

at least 2” of fluid, while heater is energized.

▪ The heater will energize if the temperature of the basin water falls below the thermostat set point and

the water level is above the sensor level.

WARNING

Immersion heater should be covered with at least 2” of fluid, while heater is

energized to prevent any failure by overheating

C.5.2. REMOTE SUMP OPERATION

A remote sump tank located in an indoor heated building is a simple option of freeze protection. When the Tower shuts down, the water is drained into the remote sump tank which is in a heated atmosphere.

C.6. SEASONAL SHUT-DOWN

When the system needs to be shut-down for a certain period of time longer than 3 days, REYMSA Cooling Towers recommends the following procedure.

▪ Ensure that all electronic components (fan, motors, and control

panels) are unplugged and locked out, failure to do so could result in personal injury or property damage.

▪ The basin and all piping needs to be carefully drained, cleaned,

and blown out all liquid, making sure there’s not water inside to prevent Freezing on winter season. It’s recommended to use a mix of antifreeze in the last wash and vacuum it to stay clear of ice.

▪ As an advice, close the make up water valve and drain the line.

▪ To avoid any ice formation due to rain or snow and keep out

dirt from inside and outside the towers components, covered them. Especially the fan discharge opening. (As shown in Figure C-9) Taking advantage that the system is turned off, you may want to do Tower service and maintenance. (Adjust motor base screw, balance and adjust fan assembly, clean the inside and outside of the equipment).

▪ Turn on the motor once a week for about 5 minutes. Before starting the motor, verify there is no

obstruction on the fan.

▪ RTG Models: If the drive is to be inactive for a prolonged period, it is recommended that the unit be

completely filled with oil. Drain excess oil before returning the gear box to service.

▪ After the seasonal shut-down period you may follow the start up instruction discussed on “Section B. START-UP”.

Figure C-8: Fan discharge covering

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D. MAINTENANCE

Proper maintenance is necessary to increase the equipment’s service life. Adequate knowledge of the operation and maintenance of REYMSA Cooling Towers is essential for efficient and safe operation.

REYMSA recommends that Inspection of the Cooling Tower should be performed yearly; appropriate cleaning or repairs should be performed if necessary; however, it is also convenient to perform regularly a general inspection for any unusual noises, vibration, water leakages, excessive drift and the set-up of initial conditions, like amps and water flow (see also section “E. TROUBLE-SHOOTING”). The water quality needs to be checked also on a regular basis.

Maintenance

WARNING

Operation, Maintenance and Repair of REYMSA Cooling Towers should be

done by Qualified Personnel.

The yearly inspection routine includes the basin, the Tower’s body (which includes the water distribution system, the fill media and the drift eliminators) and the fan and its motor; see on Table D-1 the Maintenance schedule recommended by REYMSA.

WARNING

Follow maintenance guidelines as recommended by REYMSA to avoid

unnecessary equipment malfunction and assure good Cooling Tower performance.

WARNING

Do not proceed with any Inspection or Maintenance Procedure without

disconnecting and locking out Power for the Motor and Pump. Failure to do so

may result in personal injury or property damage.

D.1 TOWER MAINTENANCE SCHEDULE

Table D-1: Recommended Tower and optional equipment maintenance schedule

REYMSA Cooling TowerS - MAINTENANCE SCHEDULE

PROCEDURE FREQUENCY

Inspection for:

-Unusual noises

-Vibration

-Water leakage

-Excessive drift

Monthly

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

Check fan and inlet louvers

Monthly

Maintenance

Check water quality for biological contaminants contact your water treatment service

Basin, Tower Body, fan inspection and cleaning

Water treatment control

Clean the strainers Monthly

Gear reducer: Initial oil change

Gear reducer: Check oil level

Gear reducer: Change oil

Quarterly

Yearly

Monthly

After 500 hours

or four weeks

of operation

Weekly

Every Six Months

or 2500 hours

of operation

Rechecking bolt 24

Drive Shaft

PROCEDURE FREQUENCY

Basin heater inspection for scale build-up and clean electrode ends and junctions box

Electric water level control inspect and cleaning all components

Vibration switch enclosure for loose wiring and moisture and adjust sensitivity

Ladders and handrail corrosion and screw loose

hours after initial tihghtening may be necessary

Quarterly

Yearly

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

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Basin, including the Air Inlet Louvers, should be inspected yearly and cleaned as required.

Inspection

1. Remove the air inlet louvers at the bottom of the Tower to gain access to the lower section of the Tower.

2. Inspect the Louvers for build-up of dirt or debris that could inhibit airflow to the Tower.

3. Cover and protect the cold water outlet to prevent debris from falling into the tank or pump suction.

4. Inspect the bottom of the Tower for black, wavy pieces of PVC fill. The fill is located directly above

5. Inspect the bottom of the Tower and the underside of the fill for biological growth (slime) and mineral

6. Inspect the cold water strainers for biological growth, mineral deposits, or any dirt that may obstruct

D.2 BASIN

Maintenance

the air intakes and can be easily seen. A large amount of fill in the bottom of the Tower may indicate damage, usually to the top layer. This layer can be inspected through the access doors. On new towers it is not uncommon to find some small pieces (shavings) which should simply be removed.

deposits. An excessive amount of growth or deposits is an indication of inadequate water treatment. If allowed to go unchecked biological growth and mineral deposits will reduce the capacity of the Tower and eventually completely plug the fill requiring it to be replaced.

the flow of water.

7. Clean all debris from the bottom of the Tower being careful not to let any fall into the cold water outlet.

8. Remove the protective covering from the cold water outlet and replace the air inlet louvers.

Cleaning (If needed):

1. Drain the water from the entire basin.

2. Clean the exterior surface with water and mild detergent.

3. Remove the air inlet louvers to gain access to the basin section of the Tower.

4. Wash the Air Inlet Louvers using a low-pressure water hose. Remove any dirt or debris.

5. Cover and protect the cold water outlet to prevent debris from falling into the tank or pump suction.

6. Clean all the debris which may have accumulated at the bottom of the basin or at the strainer.

7. Flush with fresh water to remove the silt, mud or slime.

8. Inspect the sidewalls and the bottom for any possible crack or damaged part. If any damages are found, call your local Representative for assistance.

9. Remove, clean and replace the strainer.

10. Refill the basin with fresh water.

11. Remove the protective covering from the cold water outlet (mentioned above on #5).

12. Put the Louvers back into place in the Cooling Tower.

D.3 TOWER BODY

Tower Body should be inspected annually and cleaned as required; this includes the Tower external shell, the water distribution system, the fill media and the drift eliminators.

Inspection:

1. Remove the access door to obtain complete access to the upper section. You will be able to see the top layer of the fill, the underside of the drift eliminators and the water spray nozzles.

2. The spray nozzle(s) have a threaded connection and are screwed into the water distribution header. Visually inspect the nozzle(s) for any clogged or damage.

Maintenance

3. Inspect the drift eliminators to ensure there is no damage or gaps between the pieces, and that they are laying flat.

4. Remove any debris found inside of the Tower.

5. Inspect for biological growth (slime) and mineral deposits. An excessive amount of growth or deposits is an indication of inadequate water treatment. If allowed to go unchecked biological growth and mineral deposits will reduce the capacity of the Tower and eventually completely plug the fill requiring it to be replaced.

6. Before replacing the access doors inspect the door gaskets for damage and replace if required. Clean all dirt from the face of the gasket and the surface area of the door and Tower. Apply a bead of non-drying, non-shrinking caulk if there is any doubt about the integrity of the gaskets and new gaskets are not available.

7. Replace the access doors being careful not to over tighten the bolts.

Cleaning:

1. Remove the access door(s).

2. Remove the fill from the middle of the Tower towards the sidewalls.

3. Clean the fill with a low-pressure water to remove any buildup. If fill is damaged or has excessive build up it may require replacing.

4. Remove the spray nozzle(s) from the water distribution manifold. The spray nozzle(s) have a threaded connection for easy removal.

5. Clean the spray nozzle(s) of any foreign object or trash that might be accumulated and could clogged the proper water dispersion. Visually inspect the nozzle(s) for any defect, obstruction or breaks, in case of existence replace with a new one.

6. Unscrew the first FRP drift eliminator support and remove the drift eliminator.

7. Clean the drift eliminator with low-pressure water to remove any buildup. If drift eliminator is damaged or has excessive build up it will require replacement.

8. Flush the interior with low-pressure water and remove any buildup.

9. Inspect the sidewalls, the fill and drift eliminator supports and the water distribution manifold for any cracks or damaged part. If the drift eliminators have cracks or are damaged, call your local REYMSA Representative for assistance.

10. Reverse the procedure to install the drift eliminators, nozzle(s) and fill.

11. Before replacing the access doors inspect the door gaskets for damage and replace if required. Clean all dirt from the face of the gasket and the surface area of the door and Tower. Apply a bead of non-drying, non- shrinking caulk or never-seize non-metal lubricant, if there is any doubt about the integrity of the gaskets and new gaskets are not available.

12. Replace the access doors being careful not to over tighten the bolts.

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Fan and its motor should be inspected yearly, and if required, a corrective maintenance should be performed. The motor is TEFC (Totally Enclosed Fan Cooled) or TEAO (Totally Enclosed Air Over) with permanently lubricated ball bearings and special moisture protection on the bearings, shaft and windings.

NOTE: It will be necessary to use a ladder to access the fan and motor located in the fan duct section at the very top of the Tower. Use the safety equipment required by federal, state and local regulations.

D.4 FAN MOTOR

Maintenance

CAUTION

Do not proceed without disconnecting and locking out

power for the motor and pump. Failure to do so may

result in personal injury or property damage.

CAUTION

Do not attempt any maintenance, inspection, repair or

cleaning in the vicinity of rotating equipment. The driver

controls must be in the “OFF” position, locked and tagged.

WARNING

FAN MOTOR

Use a soft-starter or VFD as motor starter.

unusual rumbling or grinding noise.

WARRANTY VOID

If fan motors are cycling (ON-OFF) at full voltage controlled by temperature signal

or heat load demand. Rapid ON-OFF cycles can damage the fan.

In Double Fan Cooling Towers (per cell), ensure to Start-Stop the fan motors at the same

WARNING

time. If you need more information, please contact REYMSA.

Inspection:

1. Remove the fan guard to obtain access to the fan assemble and motor. With the guard removed turn the fan blades by hand to ensure that it moves freely and there are no indications of mechanical problems with the motor or scraping of the fan blades against the side of the fan duct.

2. Replace the fan guard and return to ground/roof level.

Preventive maintenance (fan motor):

Maintenance

Do not proceed without disconnecting and locking out power for the motor and

pump. Failure to do so may result in personal injury or property damage.

It is recommended to do general maintenance to the fan motor after 36 months of start-up, or before if its required, including change or bearing lubrication. Maintenance should be performed only by qualified personnel.

1. Remove the fan guard on top of the cylindrical air discharge to gain access to the motor.

2. Remove the stainless steel plate on top of the fan hub by removing the (3) hex screws.

3. Once the plate has been removed; remove the (3) hex screws that holds the bushing to the hub. Note: The bolts that are being removed in this step use the non-threaded holes of the bushing. (The bushing threaded holes are empty.)

4. The bolts, that were removed, need to be screwed into the adjacent threaded holes of the bushing. Tighten the bolts following a clockwise sequence; this will push the hub-airfoil assembly out of the bushing – releasing the hub-airfoil assembly from the bushing.

5. Remove the hub-airfoil assembly from the motor shaft.

6. Inspect the fan assemble to assure that there is no damage such as broken or loose fan blades.

7. In case of fan wheel vibration it will be necessary to have the fan dynamically balanced by a qualified technician.

8. Gently remove any buildup from the fan blade with a plastic brush.

CAUTION

9. Disconnect electrical wiring and conduit to remove the motor.

10. Loosen the stainless steel bolts and nuts that connect the motor to the FRP motor support inside the fan duct.

11. Support the weight of the motor using a lifting device.

12. Remove the connecting bolts while holding the motor steady.

13. Lower the motor to the ground.

14. Clean the outside surface of the motor to ensure proper motor cooling. Check the motor insulation at a manufacturer’s authorized service station.

15. Reverse procedure to install fan and motor.

16. Replace the fan guard.

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Inspection

▪ Daily visual inspections and observation for oil leaks and unusual noises and vibrations are recommended.

▪ Periodic checks should be made of the alignment of all components of the system. Also, all external

D.5 GEAR REDUCER

Maintenance

If any of these occurs, the unit should be shut down and the cause found and corrected.

fasteners should be checked for tightness.

CAUTION

For reverse operation please contact REYMSA.

CAUTION

When using a Variable Frequency Drive (VFD), do not operate gear drive below 450

RPM fan motor speed.

Maintenance

CAUTION

Do not proceed without disconnecting and locking out power for the fan motor.

Failure to do so may result in personal injury or property damage.

By following the next procedures, gear reducer will provide years of useful service.

1. Check oil level weekly with each unit stopped. Add oil if level is below oil level indicator.

2. The original oil should be replaced after 500 hours or four weeks of operation, whichever comes first.

3. After the initial oil change, oil should be changed every 2500 hours or every six months, whichever comes first.

4. Special precautions are necessary during periods of inactivity in excess of one week. When the internal parts are not continually bathed by the lubricant as during operation, the gear reducer is particularly vulnerable to attacks by rust and corrosion. For best results, let the drive cool for approximately four hours after shutdown, start the fan and let run for approximately five minutes. This will coat the internal parts of the drive with cool oil. Thereafter, run the fan for five minutes once a week throughout the shutdown period to maintain the oil film on the internal parts of the gear drive.

5. If the drive is to be inactive for a prolonged period, it is recommended that the unit be completely filled with oil. This can be accomplished by filling through the air breather port. Cover the drive with a tarpauling or other protective covering. Drain the excess oil before returning the gear drive to service.

6. Use only Rust and Oxidation Inhibited Gear Oils in accordance with AGMA (American Gear Manufacturers Association). For general operating conditions, use a lubricant having an AGMA lubricant number of 5. Gear oils containing Extreme Pressure (EP) additives are not recommended.

Note: Please contact REYMSA to confirm the proper gear reducer model of your Cooling Tower.

Table D-2:

Oil capacity for gear reducer models.

OIL CAPACITY

GEAR REDUCER MODEL GALLONS LITERS

85 1 4

110 2 8

135 3 11

155 5.5 21

D.6 BASIN HEATER

MAINTENANCE

1. Check for leakage around screw plug.

2. Periodically inspect heater sheath for evidence of scale build up, sludge, corrosion, or “dry fire.” Clean sheath when necessary to remove scale or sludge.

3. Periodically check line connections for tightness and evidence of moisture, oil, or dirt. If these conditions are evident take the necessary steps to correct the problem. Water, oil , and dirt can enter the heater through its terminal end causing premature failure. If this is severe the unit should be taken out of

Maintenance

service and tested. We recommend that it be returned to the factory for cleaning and testing.

4. If there is evidence of corrosion or a “dry fire” the unit should be taken out of service and replaced before a failure occurs.

These instructions do not purport to cover all details or variations in equipment

nor to provide for every possible contingency to be met in connection with

installation, operation, or maintenance. If further information is needed for a

CAUTION

particular application problem, contact the factory.

5. Assemble screw plug in mating coupling in tower basin using appropriate sealing tape or compound to prevent leakage at joint.

6. If heater is to be installed in horizontal position (immersed length parallel to the tank bottom) make sure heater is adequately supported over its immersed length.

7. Heater should be positioned so that the heater is completely immersed, with fluid, at all times under the minimum liquid level or flow conditions. Heater should be covered with at least 2” of fluid, and must be located above any sludge or deposits that may collect in the bottom of tank. If heater is subject to a “dry fire” heaters failure will occur resulting in those hazards.

8. Make sure power supply leads have been turned “off” or are disconnected before attempting to make any electrical hook-up.

9. Remove housing cover. Connect housing using appropriate conduit. Connect lead wires to respective terminals. Make sure connections are tight, in accordance with proper procedures as in any electrical hookup of this type. When connecting supply leads make sure the lead is sandwiched between the two flat washers provided on the unit. It is important not to put more than 10 inch pounds of torque on the terminal pin of the heater. Greater torque will cause the terminal stud to twist off in the heater. Proper lead wire selection is mandatory. Connect ground wire to appropriate ground lug on unit.

10. Replace housing cover. If a gasket is used make sure gasket is properly seated before assembling cover.

11. Fill tank with fluid or turn on fluid flow. Check for leaks. In closed tanks make sure that all trapped air is removed from the tank. Bleed the air out of the liquid piping system and heater housing prior to operation.

12. After tank is full or flow is established turn heater on.

WARNING

The inmension heater should be covered with at least 2” of fluid, while

heater is energized to prevent any failure by overheating.

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E. TROUBLE-SHOOTING

PROBLEM / SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

Trouble-Shooting

Excessive water flow Adjust the water flow rate to design value

Exiting water temperature is too high

Unusual noises when the Tower is operating

Insufficient air flow Clean fill media and drift eliminators. Verify that

Higher heat load through

Tower that designed for

Recirculation of hot discharge

air back into Cooling Tower

air inlet.

Higher Wet-bulb Temperature

than design.

Improper operation of the

water distribution system

Heat transfer system

obstruction.

The propeller fan might be

scraping against the side of

the fan duct

The motor is having

mechanical problems

Misalignment, friction or

unstable mounting of Gear

Reducer or Drive Shaft.

Vibration of the fan wheel Perform a dynamic balance of the fan wheel by

the amperage is not less than 10% than shown on

the data plate of the motor. If so, pitch of the fan

blades needs to be adjusted, call your REYMSA

Representative for assistance

Compare actual heat load versus design heat load. Contact your REYMSA representative for advice on

possible upgrade or addition of another Cooling

Towe r

Eliminate obstructions that impede correct air

discharge or call your REYMSA representative for

advice

Consult your REYMSA representative

Perform cleaning on the entire system (see

maintenance procedure, section “D.2 BASIN” of this

manual)

Inspect and make the proper cleaning and maintenance, if required (see maintenance

procedure, section “D.2 BASIN” of this manual)

Remove the fan guard to obtain access to the

propeller. By hand, check to see that the propeller

moves freely and that there are no indications of

mechanical problems with the motor. If so, call your

REYMSA representative for assistance

Have the motor checked by qualified personnel

Check alignment of all components. External

fasteners should be checked for tightness. Check oil

level.

qualified technical personnel

Pump cavitation

Low cold water flow rate

Low water operating level Adjust the water make-up valve to raise the

Make-up valve malfunction Verify that water is available to the make-up valve.

Clogged nozzle(s) Check spray nozzles and clean or replace as

Low water level on the basin Check water level control and adjust if necessary

The flow of water through

the water outlet strainers is

obstructed

Repair or replace the make-up valve

Inspect and make the proper cleaning and maintenance, if required (see maintenance

procedure, section “D.2 BASIN” of this manual)

operating water level

required

PROBLEM / SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

Clogged nozzle(s) Clean nozzles and replace as required

The water is not falling

uniformly from the fill.

Water leaking around the

access door

Water leaking from a

Trouble-Shooting

crack in the fiberglass

Water leaking through the

air inlet louvers

Low pressure at the water inlet Check pressure at the inlet and adjust as necessary

System water is overflowing

Excessive water flow through

Damaged or reversed louvers Replace the louvers if damaged. Confirm that

(while pumps are running)

Obstructed fill media Inspect and perform cleaning and maintenance if

Improperly installed or

damaged gasket

The Tower was not handled properly during installation

or some other impact has

occurred

High water operating level Adjust the water make-up valve to a lower

the Tower when pumps are

stopped

the Tower

required (see section “D.2 BASIN” of this manual)

Ensure that the bolts attaching the access door are all in place and are properly tightened. If leakage does not stop it will be necessary to take the Tower

out of service to inspect or replace the gasket

Call your local REYMSA Representative for advice

operating level

Check piping height, grade and check valve in

pump discharge

The Tower should have been installed with a

water pressure gauge and throttling valve at the

water inlet. Check the pressure reading at the Tower inlet and ensure that is does not exceed

the recommended pressure for each Tower. Use

the throttling valve to adjust the pressure. Cooling

Towers are designed to operate between 2 psi and

10 psi at the Tower inlet, REYMSA recommends to

work between 4-8 psi

louvers are installed properly, parts facing inward

and downward.

Excessive Drift

Excessive accumulation of

debris or dirt in the bottom

of the basin

Unusual noise or vibration in the Gear Reducer (RTG & RTGM)

Excessive water flow through

the Tower

Drift Eliminators are

damaged, are not lying flat or

improperly aligned

Unsatisfactory water treatment Remove the debris and dirt while the Tower is out of

Excessive airborne

contamination

Misalignment Stop operation of the tower. Make sure that gear

Torsional Vibrations

Unstable support Make sure the motor support is secured

The Tower should have been installed with a water

pressure gauge and a throttling valve at the Tower

inlet. Check the pressure reading at the inlet and ensure that it does not exceed recommendations.

Use the throttling valve to adjust the pressure

Inspect the drift eliminators to ensure that there is

no damage, that they are lying flat and that there

are no gaps between them

service

Consider filtration

drive, drive shaft and motor are bolted and tighten

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APPENDIX A: EXAMPLE OF UNLOADING A COOLING TOWER FROM A CONTAINER.

A. The body and duct sections are attached to the container. Make sure to unpin the Cooling Tower parts

Appendix

before unloading it. See Figure AP-1.

Single Fan model

Figure AP-1: Unloading a Cooling Tower from a container

B. Make sure to remove the wooden blocks that keep the duct’s boxes in place. Proceed to unload the duct,

pulling the wooden skid to the edge of the container. If you don’t have special equipment, use a steel cable to grab the wooden skid. Make sure to secure the steel cable on the strong support of the wooden skid. REYMSA recommends to use a forklift to unload the duct.

Single Fan model Single Fan, 3 pieces model Quadruple Fan model

Single Fan, 3 pieces model

Quadruple Fan model

Use a clamp at the end to grip the wooden skid.

Figure AP-2: Unloading the fan duct from a container

C. Once the wooden skid is on the edge, proceed to lift and take out the fan duct. See Figure AP-3.

Appendix

D. Some models are shipped in a two-piece body. Basin section is mounted metal skids to protect and

facilitate unloading. Use a steel cable to grab the metal skids and drag it to the edge of the container and leave half of basin section inside the container. See Figure AP-4.

E. Use a forklift to support the basin section from one end while a second forklift will support it from the

large side and then place it on the floor. See figure AP5. Remove metal skids only if the Tower will be assembled.

Use a bar to take

out the tables

Figure AP-3: Lifting the fan duct with a forklift

Figure AP-4: Pulling the basin out from a container Figure AP-5: Unloading the basin with two forklifts

F. Repeat step “E” to unload the Body section. Remove metal skids only if the Tower will be assembled.

G. Secure the body section from the U-bolts and lift it slowly to set it in position for installation (see Figure

AP-6). Maintain a minimum of 60° between the strap and the horizontal. Then assemble the Tower using a crane. Secure the sections with stainless steel bolt and nuts supplied by REYMSA.

Figure AP-6: Positioning the body section with a crane

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APPENDIX B: WATER MAKE-UP FLOAT VALVE.

A mechanical float valve assembly is provided as standard to supply make-up water to basin. The standard make-up assembly consist of a heavy duty bronze make-up valve connected to a plastic or copper float using a threaded stem.

The water level in the basin can be adjusted by repositioning the float and stem using locknuts. The float valve is easily accessible from outside the unit through removable air inlet louver.

Appendix

WARRANTY VOID

If inlet pressure to the mechanical float valve exceeds 50 psi.

Example of stems

Float valve installed in a Cooling Tower

1 ½”

Plastic float Example of valves

Copper float

Figure AP-7: Float valve parts

1”

½”

APPENDIX C: EXAMPLE OF STRUCTURAL BASE FOR A REYMSA COOLING TOWER.

Appendix

FOR REFERENCE ONLY

Consult your REYMSA representative for the recommended support of a specific model

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APPENDIX C: EXAMPLE OF STRUCTURAL BASE FOR A REYMSA COOLING TOWER.

Appendix

FOR REFERENCE ONLY

Consult your REYMSA representative for the recommended support of a specific model

APPENDIX C: EXAMPLE OF STRUCTURAL BASE FOR A REYMSA COOLING TOWER.

Appendix

FOR REFERENCE ONLY

Consult your REYMSA representative for the recommended support of a specific model

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APPENDIX D: EXAMPLE OF ACCESSORIES ASSEMBLY INSTRUCTIONS.

Appendix

FOR REFERENCE ONLY

Consult your REYMSA representative for the recommended support of a specific model

APPENDIX D: EXAMPLE OF ACCESSORIES ASSEMBLY INSTRUCTIONS.

Appendix

FOR REFERENCE ONLY

Consult your REYMSA representative for the recommended support of a specific model

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APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS.

Appendix

For RT-A, RT-B & RT-C models

MODEL

303 3 3 3 3 3 3 3 3 3 3

404 3 3 3 3 3 3 3 3 3 3

505 3 3 3 3 3 3 3 3 3 3

606 3 3 3 3 3 3 3 3 3 3

707 4 3 3 3 3 3 4 3 3 3

708 4 4 3 3 3 3 4 3 4 3

709 4 5 3 3 3 3 4 3 4 3

808 4 4 3 3 3 3 4 3 4 3

810 5 5 3 3 3 3 4 3 4 3

812 5 6 3 3 3 4 5 4 5 3

714 5 6 3 3 3 4 4 4 5 3

816 5 7 3 4 4 4 5 4 5 4

819 6 8 3 4 4 5 6 5 6 4

822 5 8 3 4 4 5 6 5 6 4

824 6 9 3 5 4 5 6 5 6 4

827 6 9 3 5 4 5 6 5 6 4

1414 8 9 4 5 5 5 6 5 7 5

1616 10 10 5 5 6 6 8 6 8 6

1619 11 11 6 6 7 7 9 7 8 7

1622 11 13 6 7 7 8 9 8 9 7

1624 11 14 6 7 7 8 9 8 10 7

1627 11 14 6 7 7 8 9 8 9 7

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LOW SOUND & SUPER LOW SOUND MODELS

707 4 3 3 3 3 3 4 3 3 3

708 4 4 3 3 3 3 4 3 4 3

709 4 5 3 3 3 3 4 3 4 3

808 4 4 3 3 3 3 4 3 4 3

810 5 5 3 3 3 3 4 3 4 3

812 5 6 3 3 3 4 5 4 5 3

714 4 6 3 3 3 4 4 4 4 3

816 5 7 3 4 4 4 5 4 5 4

819 6 8 3 4 4 5 6 5 6 4

822 5 8 3 4 4 5 6 5 6 4

824 5 8 3 4 4 5 6 5 6 4

827 5 8 3 4 4 5 6 5 6 4

1414 8 9 4 5 5 5 6 5 7 5

1616 10 10 5 5 6 6 8 6 8 6

1619 11 11 6 6 7 7 9 7 8 7

1622 11 13 6 7 7 8 9 8 9 7

1624 11 13 6 7 7 8 9 8 9 7

1627 11 13 6 7 7 8 9 8 9 7

BETWEEN TOWERS ONE WALL TWO WALLS THREE WALLS (A) THREE WALLS (B)

LONG SIDE

“DL”

Projects that involves Modular arrangement (RTM & RTGM models), please contact your local REYMSA representative for assistance. Suggested clearances, conditions can vary. All clearances are expressed in feet.

APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS.

Appendix

For RT-D models

MODEL

303 3 3 3 3 3 3 3 3 3 3

404 3 3 3 3 3 3 3 3 3 3

505 3 3 3 3 3 3 3 3 3 3

606 3 3 3 3 3 3 3 3 3 3

707 4 3 3 3 3 3 4 3 3 3

708 4 4 3 3 3 3 4 3 4 3

709 4 5 3 3 3 3 4 3 4 3

808 4 4 3 3 3 3 4 3 4 3

810 5 5 3 3 3 3 4 3 4 3

812 5 6 3 3 3 4 5 4 5 3

714 4 6 3 3 3 4 4 4 5 3

816 5 7 3 4 4 4 5 4 5 4

819 6 8 3 4 4 5 6 5 6 4

822 5 8 3 4 4 5 6 5 6 4

824 5 9 3 5 4 5 6 5 6 4

827 5 9 3 5 4 5 6 5 6 4

1414 8 9 4 5 5 5 6 5 7 5

1616 10 10 5 5 6 6 8 6 8 6

1619 11 11 6 6 7 7 9 7 8 7

1622 11 13 6 7 7 8 9 8 9 7

1624 11 13 6 7 7 8 9 8 9 7

1627 11 14 6 7 7 8 9 8 9 7

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LOW SOUND & SUPER LOW SOUND MODELS

707 4 3 3 3 3 3 3 3 3 3

708 4 4 3 3 3 3 4 3 4 3

709 4 4 3 3 3 3 4 3 4 3

808 4 4 3 3 3 3 4 3 4 3

810 5 5 3 3 3 3 4 3 4 3

812 5 6 3 3 3 4 5 4 5 3

714 4 6 3 3 3 4 4 4 4 3

816 5 7 3 4 4 4 5 4 5 4

819 6 8 3 4 4 5 6 5 6 4

822 5 8 3 4 4 5 6 5 6 4

824 5 8 3 4 4 5 6 5 6 4

827 5 8 3 4 4 5 6 5 6 4

1414 8 9 4 5 5 5 6 5 6 5

1616 10 10 5 5 6 6 7 6 7 6

1619 11 11 6 6 7 7 8 7 8 7

1622 11 12 6 6 7 8 9 8 9 7

1624 11 13 6 7 7 8 9 8 9 7

1627 11 13 6 7 7 8 9 8 9 7

BETWEEN TOWERS ONE WALL TWO WALLS THREE WALLS (A) THREE WALLS (B)

LONG SIDE

“DL”

Projects that involves Modular arrangement (RTM& RTGM models), please contact your local REYMSA representative for assistance. Suggested clearances, conditions can vary. All clearances are expressed in feet.

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APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS.

Appendix

For RTU models

“DW”

“DL”

“DW”

WALLS

“DL”

WALLS

“DL”

“DW”

WALLS

“DL”

“DW”

“DL”

WALLS

“DL”

“DW”

“DL”

BETWEEN TOWERS ONE WALL TWO WALLS THREE WALLS (A) THREE WALLS (B)

MODEL

RTU-303 3 3 3 3 3 3 3 3 3 3

RTU-404 3 3 3 3 3 3 3 3 3 3

RTU-505 3 3 3 3 3 3 3 3 3 3

RTU-606 3 3 3 3 3 3 3 3 3 3

RTU-707 4 3 3 3 3 3 4 3 3 3

RTU-708 4 4 3 3 3 3 4 3 4 3

RTU-709 4 5 3 3 3 3 4 3 4 3

RTU-808 4 4 3 3 3 3 4 3 4 3

RTU-810 5 5 3 3 3 3 4 3 4 3

RTU-812 5 6 3 3 3 4 5 4 5 3

RTU-714 4 6 3 3 3 4 4 4 5 3

RTU-816 5 7 3 4 4 4 5 4 5 4

RTU-819 6 8 3 4 4 5 6 5 6 4

RTU-1414 8 9 4 5 5 5 6 5 7 5

RTU-1616 10 10 5 5 6 6 8 6 8 6

RTU-1619 11 11 6 6 7 7 9 7 8 7

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

LOW SOUND MODELS

RTU-707-LS 6 6 3 3 3 3 3 3 3 3

RTU-708-LS 6 6 3 3 3 3 3 3 4 3

RTU-709-LS 6 6 3 3 3 3 4 3 4 3

RTU-808-LS 6 6 3 3 3 3 4 3 4 3

RTU-810-LS 6 6 3 3 3 4 5 4 5 3

RTU-812-LS 6 6 3 3 3 4 5 4 5 3

RTU-714-LS 6 6 3 3 3 4 4 4 4 3

RTU-816-LS 6 7 3 4 4 4 5 4 5 4

RTU-1414-LS 8 8 4 4 5 5 6 5 6 5

RTU-1616-LS 11 10 6 5 6 6 8 6 7 6

“DL”

RTU-707-SLS 6 6 3 3 3 3 3 3 3 3

RTU-708-SLS 6 6 3 3 3 3 4 3 4 3

RTU-709-SLS 6 6 3 3 3 3 4 3 4 3

RTU-808-SLS 6 6 3 3 3 3 4 3 4 3

RTU-810-SLS 6 6 3 3 3 4 5 4 5 3

RTU-812-SLS 6 7 3 4 4 4 5 4 5 4

RTU-714-SLS 6 6 3 3 3 4 4 4 4 3

RTU-816-SLS 6 7 3 4 4 4 5 4 5 4

RTU-1414-SLS 9 8 5 4 5 5 6 5 6 5

RTU-1616-SLS 11 10 6 5 7 6 8 6 7 7

Projects that involves Modular arrangement (RTM& RTGM models), please contact your local REYMSA representative for assistance. Suggested clearances, conditions can vary. All clearances are expressed in feet.

SUPER LOW SOUND MODELS

WALL

APPENDIX E: MINIMUM DISTANCE BETWEEN TOWERS AND OBSTRUCTIONS.

For RTG models

Appendix

“DW”

“DL”

“DW”

“DL”

BETWEEN TOWERS ONE WALL

MODEL

RTG-812 8 9 4 5

RTG-1012 8 9 4 5

RTG-1014 8 10 4 5

RTG-1016 8 10 4 5

RTG-1018 9 12 5 6

RTG-1020 9 13 5 7

RTG-1212 9 10 5 5

RTG-1214 10 11 5 6

RTG-1216 10 12 5 6

RTG-1218 11 13 6 7

RTG-1220 11 14 6 7

RTG-1222 12 16 6 8

RTG-1223 12 16 6 8

SHORT SIDE

“DW”

LONG SIDE

“DL”

SHORT SIDE

“DW”

LONG SIDE

WALL

“DL”

Projects that involves Modular arrangement (RTM& RTGM models), please contact your local REYMSA representative for assistance. Suggested clearances, conditions can vary. All clearances are expressed in feet.

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