Scotsman NME1254R, FME1504R User Manual

NME1254R & FME1504R

INTRODUCTION

To the owner or user: The service manual you are reading is intended to provide you, and the maintenance or service technician, with the information needed to install, start up, clean, maintain, and service this ice system.

Table of Contents

FOR THE INSTALLER ······································ Page 2 FOR THE INSTALLER: Remote Condenser ··························· Page 3 FOR THE INSTALLER ······································ Page 4 Remote Condenser Location ··································· Page 5 FOR THE INSTALLER: Remote Condenser Installation ····················· Page 6 FOR THE INSTALLER ······································ Page 7 FOR THE PLUMBER ······································· Page 8 FOR THE ELECTRICIAN ····································· Page 9 FOR THE INSTALLER: Completed Installation ·························· Page 10 FOR THE INSTALLER: Final Check List ····························· Page 11 START UP ············································ Page 12 COMPONENT DESCRIPTION ·································· Page 13 COMPONENT DESCRIPTION: Control Box Components ···················· Page 14 ELECTRICAL SEQUENCE: ··································· Page 15 OPERATION: Water ······································· Page 16 OPERATION: Refrigeration ···································· Page 17 OPERATION: Refrigeration ···································· Page 18 OPERATION: Refrigeration ···································· Page 19 CLEANING and SANITATION ·································· Page 20 SENSOR MAINTENANCE: ···································· Page 21 BEARING MAINTENANCE ···································· Page 22 AUGER MAINTENANCE ····································· Page 23 SERVICE DIAGNOSIS: ····································· Page 24 SERVICE DIAGNOSIS: ····································· Page 25 CONTROL SYSTEM DIAGNOSTICS ······························ Page 26 REMOVAL AND REPLACEMENT: Reservoir ·························· Page 27 REMOVAL AND REPLACEMENT: Bearing And Breaker ···················· Page 28 REMOVAL AND REPLACEMENT: Auger ···························· Page 29 REMOVAL AND REPLACEMENT: Evaporator & Water Seal ·················· Page 30 REMOVAL AND REPLACEMENT: Evaporator ·························· Page 31 REMOVAL AND REPLACEMENT: Gearmotor ························· Page 32 REFRIGERATION SYSTEM SERVICE ····························· Page 33 What to Do Before Calling for Service ······························ Page 34

Note this symbol

when it appears.

January 2000

Page 1

It marks a possible hazard.

NME954R & FME1204R

FOR THE INSTALLER

Either the FME1204R or the NME954R is designed to fit the following Scotsman storage bins:

SB480 and extensions (with bin top KBT18)

BH800 using bin top KBT15 (one unit) or KBT25

(two units).

BH801 using bin top KBT28

BH900 with KBT24 (one unit)

BH900 with KBT25 (two units side by side)

Allow 6" above machine

for service.

NME954 Dispenser Applications

The NME954 can be placed on and used with certain ice and ice-beverage dispensers. Kits are required for proper operation:

Back View

ID150 use adapter KBT42 and KNUGDIV

ID200 or ID250, use adapter KBT46 and

KDIL-N-ID2

Cornelius ED/DF200 beverage dispensers, use

KBT46 and KDIL-N-200

Cornelius ED/DF250 beverage dispensers, use

KBT46 and KDIL-N-250

Lancer nugget IBD, use KDIL-N-L & Lancer kit.

Liquid Line Connection

Discharge Line Connection

Remote Condenser

Junction Box

Electrical Inlet

20.84"

2.96"

Drain

3/4" FPT

SPECIFICATIONS: ICE MAKER

Model Number Dimensions

(w/o bin)

H”xW”xD” FME1204RS-32A 27 x 21 x 24 208-230/60/1 FLAKE Remote Air 14.1 20 208 ounces FME1204RS-3A same 203-230/60/1 FLAKE Remote Air 11.2 15 208 ounces NME954RS-32A same 208-230/60/1 NUGGET Remote Air 14.1 20 208 ounces NME954RS-3A same 208-230/60/3 NUGGET Remote Air 11.2 15 208 ounces

Minimum Circuit Ampacity is used to determine wire size and type per National Electric Code.

Basic Electrical Ice Type Cond. Type Minimum

Water Inlet

3/8" Flare

5.25"

Circuit Ampacity

Maximum Fuse Size

Refrigerant Charge (R-404A)

January 2005

Page 2

NME1254R & FME1504R

FOR THE INSTALLER: Remote Condenser

Installation Limitations:

This ice system is designed to be installed indoors, in a controlled environment:

Min. Max. Air Temperature 50 Water Temperature 40

F 1000F

F 1000F Water Pressure 20 psi 80 psi Voltage 5% +10%

(Compared to the nameplate) The temperature limitations do not apply to the

remote condenser. It will work between -20 degrees F, and 120 degrees F.

Operating the machine outside of the limitations is misuse and can void the warranty.

ERC DIMENSIONS

Model A B F G ERC201 33 ERC402 43

Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance. They meet or exceed the standards of UL, NSF, and CUL.

Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way, including the use of any part and/or other components not specifically approved by Scotsman.

Scotsman reserves the right to make design changes and/or improvements at any time. Specifications and design are subject to change without notice.

"10

"16

"21

"11 "16

SPECIFICATIONS: REMOTE CONDENSER

Model Use with Basic Electrical ERC201-32 1 FME1504R or 1

208-230/60/1

NME1254R

ERC402-32 1 or 2

208-230/60/1

FME1504Rs/NME1254Rs

RTE25 Precharged line set, 25’. R-404A RTE40 Precharged line set, 40’. R-404A * Two machines on one condenser require a fan relay kit.

Icemaker Nameplate Located On Back Panel

Serial Plate Located Behind Front Panel

January 2000

Page 3

NME1254R & FME1504R

FOR THE INSTALLER

Location:

After uncrating and inspection, the unit is ready for installation. It is important that the machine be installed in a location where it has enough space around it to be accessible for service, usually a minimum of 6 inches. Try to avoid hot, dirty and crowded locations. Be sure that the location for the machine is within the limitations described on page 3.

Storage Bin:

LEVEL THE ASSEMBLY

Tip the storage bin on its back, using parts of the carton to protect the exterior finish. Install the legs into the threaded holes in the bottom of the bin. Turn the leg levelers all the way in preparation for leveling later. Return the bin to the upright position, remove paper covering the bin gasket.

Install bin top if required, follow the directions included with the bin top.

Note: Do not push bin into position, but lift it there. Pushing a bin, especially one with ice in it, can cause damage to the legs and the leg mounts.

Ice Maker:

The machine is heavy, so the use of a mechanical lift is recommended for lifting the machine high enough to install on top of the bin. After the unit is placed on the bin, line it up so it is even with the back, left, and right sides. Secure the machine to the bin with the hardware provided with the machine.

Remove the front panel and remove the styrofoam shipping blocks from under the gearmotor, the top of the ice chute, and from between the gearmotor and the right side panel.

GASKET

FASTEN THE MACHINE

TO THE BIN WITH THE

HARDWARE SUPPLIED

WITH THE ICEMAKER

January 2000

Page 4

Remote Condenser Location

Use the following for planning the placement of the condenser relative to the ice machine

Location Limits - condenser location must not exceed ANY of the following limits:

Maximum rise from the ice machine to the

condenser is 35 physical feet

Maximum drop from the ice machine to the

condenser is 15 physical feet

Physical line set maximum length is 100 feet.

Calculated line set length maximum is 150.

Calculation Formula:

Drop = dd x 6.6 (dd = distance in feet)

Rise = rd x 1.7 (rd = distance in feet)

Horizontal Run = hd x 1 (hd = distance in feet)

Calculation: Drop(s) + Rise(s) + Horizontal Run

= dd+rd+hd = Calculated Line Length

Configurations that do NOT meet these requirements must receive prior written authorization from Scotsman.

NME1254R & FME1504R

Do NOT:

Route a line set that rises, then falls, then rises.

Route a line set that falls, then rises, then falls.

Calculation Example 1:

The condenser is to be located 5 feet below the ice machine and then 20 feet away horizontally.

5 feet x 6.6 = 33. 33 + 20 = 53. This location would

be acceptable

Calculation Example 2:

The condenser is to be located 35 feet above and then 100 feet away horizontally.

35 x 1.7 = 59.5. 59.5 +100 = 159.5. 159.5 is

greater than the 150 maximum and is NOT acceptable.

22.87"

17.15"

Remote

Condenser

Located ABOVE

Ice Machine

Remote

Condenser

Located BELOW

Ice Machine

40.35"

January 2000

Page 5

NME1254R & FME1504R

FOR THE INSTALLER: Remote Condenser Installation

Location:

Limited to a 40 foot or a 25 foot length of precharged refrigerant tubing connecting the icemaker to the remote condenser. The condenser must be above or level with the icemaker.

Select the best available location, protecting the condenser from extremes of dirt, dust, and sun.

Meet all applicable building codes. Usually the services of a licensed electrician are required.

Roof Attachment:

1. Install and attach the remote condenser to the roof of the building, using the methods and practices of construction that conform to the local building codes, including having a roofing contractor secure the condenser to the roof.

2. Have an electrician connect the remote condenser fan motor to the icemaker, using the junction box at the back of the icemaker.

PRECHARGED LINE ROUTING

CAUTION

Do not connect precharged tubing until all routing and forming of the tubing is complete. See the coupling instructions, next page for connecting instructions.

4. Spiral the excess length of pre charged tubing inside the building. Use a horizontal spiral (as illustrated) to avoid any traps in the lines.

Note: spiral need not be as tight as illustrated.

5. Have the roofing contractor seal the holes in the roof per local codes.

REMOTE CONDENSER

1. Each set of precharged refrigerant lines (either 25 foot or 40 foot) consists of a 3/8 inch diameter liquid line and a 1/2 inch diameter discharge line. Both ends of each line have quick connect couplings, one end has a schrader valve connection, that end goes to the condenser.

Note: The openings in the building ceiling or wall, listed in the next step, are the minimum sizes recommended for passing the refrigerant lines through.

2. Have the roofing contractor cut a minimum hole for the refrigerant lines of 1 3/4 inch. Check local codes, a separate hole may be required for the electrical power to the condenser.

CAUTION

DO NOT KINK OR CRIMP REFRIGERANT TUBING WHEN INSTALLING IT.

3. Route the refrigerant lines through the roof opening.

Follow straight line routing whenever possible. Any excess tubing MUST be retained within the

building.

January 2000

Page 6

LOCATE REMOTE

CONDENSER

ABOVE ICEMAKER

SPIRAL

EXCESS

TUBING

INSIDE

BUILDING

FOR THE INSTALLER

NME1254R & FME1504R

Note: The couplings on the sets of precharged lines must be installed properly to prevent leaking. Carefully follow the instructions:

Initial Connections:

1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to be certain that no foreign matter remains on them.

2. Lubricate the inside of the couplings, especially the O-Rings with refrigerant oil.

3. Position the fittings on the correct connections on the condenser and ice machine.

Clean and Lubricate Couplings

The ½ inch discharge line (schrader valve end) goes to the remote condenser fitting marked “discharge line.”

The to the remote condenser fitting marked “liquid

line.”

inch liquid line (schrader valve end) goes

4b. Using two wrenches, one to rotate the swivel nut and one to hold the tubing, tighten each coupling.

Tighten Swivel Nut

It is CRITICAL that ONLY the NUT on the pre-charged tube be turned or the diaphragms will be torn loose by the piercing knives and be loose in the refrigeration system causing severe operational problems.

Note: As the coupling is tightened, the diaphragms in the quick connect couplings will begin to be pierced. As that happens, there will be increased resistance to tightening the swivel nut.

4c. Continue tightening the swivel nut until it bottoms out or a very definate increase in resistance is felt (no threads should be showing). Do NOT overtighten.

The ½ inch discharge line goes to the ice maker fitting marked “discharge line.”

The fitting marked “liquid line.”

Final Connections:

4a. Begin by tightening the couplings together by hand. Continue to turn the swivel nuts by hand until is is certain that the threads are properly engaged.

SCHRADER VALVE

inch liquid line goes to the ice maker

NO SHRADER

TO REMOTE TO ICEMAKER

January 2000

Rotate Swivel Nut ¼ Turn More

5. Using a marker or pen, mark a line lengthwise from the coupling union nut to the bulkhead. Then tighten the coupling and additional 1/4 turn. As the nut turns, the line will show when 1/4 turn is made.

6. After all connections are made, and after the king valve has been opened (do not open at this time), check the couplings for leaks.

Page 7

NME1254R & FME1504R

FOR THE PLUMBER

CONFORM TO ALL APPLICABLE CODES

Water Inlet

The recommended water supply is cold water. Use 3/8" O.D. copper tubing, connect to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply.

WATER

INLET

3/8" FLARE

HAND SHUT

OFF VALVE

Drains

There is one 3/4" FPT drain at the back of the cabinet, the drain line is of the gravity type, and 1/4 inch per foot fall is an acceptable pitch for the drain tubing. There should be a vent at the highest point of the drain line, and the ideal drain receptacle would be a trapped and vented floor drain. Use only 3/4" rigid tubing.

Storage Bin: Install a separate drain line. Insulation of this drain line is recommended.

CONNECT TO

COLD WATER

FIELD INSTALLED

ICEMAKER DRAIN

3/4" FPT

BIN DRAIN

3/4" FPT

FILTER

(OPTIONAL)

January 2000

Page 8

FOR THE ELECTRICIAN

CONFORM TO ALL APPLICABLE CODES

The electrical power to the unit is supplied through the junction box at the rear of the machine.

Check the nameplate (located on the back panel) for the voltage requirements, and for the minimum circuit ampacity. The machine requires a solid chassis to earth ground wire.

The ice maker should be connected to its own electrical circuit so it would be individually fused. Voltage variation must remain within design limitations, even under starting conditions.

Electrically the remote condenser fan motor is connected to the icemaker at the contactor terminals for the compressor and the fan motor operates whenever the compressor operates.

Electrical connections are made at the junction box at the back of the icemaker and at the junction box on the remote condenser.

The remote condenser must be wired to the icemaker in accordance with local and national electrical codes with a minimum of 18 Awg. wire with an ground bonding wire connected to the ground screws provided in both the condenser and machine field wiring boxes. All outdoor wiring must be in rainproof conduit.

All external wiring must conform to national, state, and local electrical codes. The use of a licensed electrician is required to perform the electrical installation.

NME1254R & FME1504R

REMOTE CONDENSER

WATERPROOF (LIQUID TIGHT)

CONDUIT

ICEMAKER

JUNCTION BOX

POWER SUPPLY

January 2000

Page 9

NME1254R & FME1504R

FOR THE INSTALLER: Completed Installation

A typical installation should generally appear as illustrated below. The remote condenser must be located above the icemaker and the precharged lines installed per the instructions on page 6.

ROOF

CUT-AWAY

INSULATED PRECHARGED

REFRIGERANT TUBING

January 2000

Page 10

NME1254R & FME1504R

FOR THE INSTALLER: Final Check List

1. Is the ice system installed indoors in a location where the air and water temperatures are controlled, and where they do not exceed the design limitations?

2. Is there an electrical service disconnect within sight of the installed machine? Has the voltage been checked, and compared to nameplate requirements?

3. Have all the plumbing connections been made and checked for leaks?

4. Has the machine and bin been leveled?

5. Is there a minimum of 6" clearance at the rear, left, and right of the machine for proper service access and air circulation?

6. Is the water pressure a minimum of 20 psig?

7. Has the machine been secured to the bin?

8. Is there a water shut off valve installed near the machine?

9. Is the remote condenser installed per local building codes, and in a place where it has adequate ventilation and minimal solar heat gain?

10. Has all shipping material (under and next to the gearmotor, and on top of the ice chute) and literature (inside the front panel) been removed from the units?

11. Have the remote condenser and precharged lines been properly installed?

12. Has the electrical connection between the icemaker and the condenser been made?

13. Verify that the master switch is in the OFF position.

14. Switch on the electrical power.

15. Refer to Pre-Start instructions, the next page.

POWER SUPPLY?

PLUMBING?

DRAINS?

LEVELED?

January 2000

Page 11

+ 23 hidden pages