Carrier 90MU, 90MA User Manual

90MA/MU

Single-Package Marine Cooling Units

Installation, Operation and Service Instructions

SAFETY CONSIDERATIONS

The 90MA/MU Units are designed to provide safe and reliable service when operated within design specifications. However, due to system pressures, electrical components, and equipment location, some aspects of installation, operation and servicing of this equipment can be hazardous. Only trained, qualified installers and service technicians should install, operate, and service this equipment. When working on the equipment, observe all precautions on tags or labels attached to the unit. Safety notes in the literature, and any other safety precautions that apply.

• Follow all safety codes.

• Wear safety glasses and work gloves.

• Use care in handling, rigging, and placing bulky

equipment.

WARNING

Never reach into unit while fan is running. Lock open and tag power disconnect before working on a fan. Remove the fuses and take them with you after noting this on tag.

Check assembly and component weight to be sure rigging equipment can handle them safely. Note also any specific rigging instructions.

When steam cleaning coils, be sure area is clear of personnel.

GENERAL

The 90MA/MU water cooled single-package cooling units are designed to provide air conditioning aboard marine vessels. The 90MA units are fitted with a water cooled condenser and are factory charged, wired and piped. The 90MU units are similar to the 90MA except they are configured for use of a remote mounted condenser. An accessory discharge plenum may be installed to provide free-blow into the conditioned space. Also, an optional electric heater may be specified to provide comfort heating.

INSTALLATION

Step 1 - Inspect Unit - Check unit against shipping order.

Inspect carefully for concealed shipping damage. If shipment is damaged or incomplete, file claim with transportation

company and advise Carrier Transicold immediately.

CONTENTS Page

SAFETY CONSIDERATIONS........................................1

GENERAL .....................................................................1

INSTALLATION.............................................................1

Step 1- Inspect Unit .......................................................1

Step 2 - Protect Unit from Damage................................1

Step 3 - Provide Unit Support ........................................1

Step 4 - Rig and Place Unit............................................8

Step 5 - Install Accessory Plenum (If Supplied) ............8

Step 6 – Check Fan Shaft and Wheel Alignment...........9

Step 7 - Install Ventilation Ductwork (If Required)..........9

Step 8 - Check Return-Air Filters...................................9

Step 9 - Check Compressor Spring Mounts

(*08 & *12)................................................................9

Step 10 - Make Condenser Connections .......................9

Step 11 - Install Unit Drain Line ...................................11

Step 12 - Make Electrical Connections ........................12

OPERATION................................................................12

To Start Unit.................................................................12

To Shut Down Unit.......................................................12

Service Valves.............................................................12

SERVICE.....................................................................13

Return-Air Grill Removal..............................................13

Access Panel Removal................................................13

Evaporator Fan Adjustment .........................................13

Lubrication ...................................................................13

Return-Air Filters..........................................................13

Condensate Drains ......................................................13

Evaporator Coil............................................................14

Water Regulating Valve ...............................................14

Condenser ...................................................................14

Charging the System....................................................15

Evaporator Fan Motor Removal...................................15

Pressure Relief Device.................................................15

Crankcase Heater........................................................15

Cycle-LOC

Discharge And Suction Pressure Switches..................16

Oil Charge....................................................................16

WIRING SCHEMATIC - *04/*06...................................17

COMPONENT ARRANGEMENT - *04/*06..................18

WIRING SCHEMATIC - *08/*12...................................19

COMPONENT ARRANGEMENT - *08/*12..................20

UNIT SUPPORT DRAWINGS .....................................21

Step 2 - Protect Unit from Damage - To maintain warranty,

protect unit against adverse weather, theft, or vandalism on job site.

Step 3 - Provide Unit Support - Refer to Figure 2 and Tables 1A/B/C/2A/B/C for unit size and weight. If desired, construct a frame of I-beams or angle iron that adequately supports unit. See unit support drawings contained in this document.

Protection Device...................................15

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations Printed in U.S.A. 90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009

Pg 1

TABLE 1A - 90MA/MU PHYSICAL DATA – R-134A , ENGLISH UNITS (See Table 2A for SI units)

BASE UNIT (90MA/MU) UNITS 308 312 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA Pounds 895 950 Base Unit 90MU Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6 Qty Unloading Cylinders Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) PSIG Closes (90MA) Opens (90MU) Closes (90MU)

SUCTION PRESSURE SWITCH

Opens PSIG Closes

REFRIGERANT

Typ Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type Water Volume Gallons

EVAPORATOR AIR FAN

Nominal Flow CFM 3000 4000 Standard Speed Range Maximum Allowable Speed Belt Qty/Pulley Pitch Diamete Motor Pulley Pitch Diameter Range Motor Nominal Rating (@ 60Hz)…Frame Size Standard Alternate (SeeNote 1) Alternate (See Note 1)

EVAPORATOR COIL

Tube Qty Rows…Fin Spacing Face Area

RETURN AIR FILTERS

Qty…Size Inches

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1 1 Water Outler (top)

Maximum Working Pressure (Refrigerant Side) PSIG CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts Watts

Capacity @ 400 volts

Number of Electric Heat Stages

Tons 5.5 8

R-

Pounds N/ N/

Pounds 50 50

Semi-Hermetic, Recip

0 2

1 2

PSIG

335+/-10 235+/-10

N/ N/

PSIG

7+/-3

22+/-5

Pounds 11.2 10

R-

1…Tube in Tube

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor@ 60hz

2.42

RPM 487-690 591-838

RPM

1250

Inches 1 / 8.5 1 / 7.0

Inches

2.4 to 3.4 inches

HP 1…56 2…56

HP 2…56 3…56

HP 3…56 N/

Fins/Inch

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…12.5

Sq Ft 7.3 8.5

Factory Supplied, Cleanable

4…16 x 20 x 1

Inches FPT 1 1

Inches FPT

400

3/4

Watts

17.5

13.4 2

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Pg 2

TABLE 1B - 90MA/MU PHYSICAL DATA – R-407C , ENGLISH UNITS (See Table 2B for SI units)

BASE UNIT (90MA/MU) UNITS 404 406 408 412 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA Pounds 390 427 895 950 Base Unit 90MU Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6 Qty Unloading Cylinders Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) PSIG Closes (90MA) Opens (90MU) Closes (90MU)

SUCTION PRESSURE SWITCH

Opens PSIG Closes

REFRIGERANT

Typ Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type Water Volume Gallons 0.39 0.86

EVAPORATOR AIR FAN

Nominal Flow CFM 1200 2000 3000 4000 Standard Speed Range Maximum Allowable Speed Belt Qty/Pulley Pitch Diamete Motor Pulley Pitch Diameter Range Motor Nominal Rating (@ 60Hz)…Frame Size Standard Alternate (SeeNote 1) Alternate (See Note 1)

EVAPORATOR COIL

Tube Qty Rows…Fin Spacing Face Area

RETURN AIR FILTERS

Qty…Size Inches

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1/2 3/4 1 1 Water Outler (top)

Maximum Working Pressure (Refrigerant Side) PSIG CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts Watts

Capacity @ 400 volts

Number of Electric Heat Stages

Tons 3 5 7.5 10

R-407C

Pounds 330 360 835 890

Pounds 25 25 50 50

0 2

1 2

Scroll Semi-Hermetic, Recip

N/ N/

PSIG

395+/-10 295+/-10

426+/-7

320+/-20

27+/-4

PSIG

67+/-4

R-407C

Pounds 3.1 5.3 11.2 10.0

1…Tube in Tube

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60hz

2.42

RPM 647-914 647-915 487-690 591-838

RPM

1250

Inches 1 / 6.4 1 / 6.4 1 / 8.5 1 / 7.0

Inches

2.4 to 3.4 inches

HP 1/3…56 3/4…56 1…56 2…56

HP 3/4…56 1…56 2…56 3…56

HP N/ N/ 3…56 N/

Fins/Inch 2…14.4 3…14.4

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…12.5

Sq Ft 5 5 7.3 8.5

2…16 x 25 x 1 4…16 x 20 x 1

Factory Supplied, Cleanable

Inches FPT 1/2 3/4 1 1

Inches FPT

400

3/4

Watts

5.25

1 2

17.5

13.44.03

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Pg 3

TABLE 1C - 90MA/MU PHYSICAL DATA – R-404A , ENGLISH UNITS (See Table 2C for SI units)

BASE UNIT (90MA/MU) UNITS 504 506 508 512 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA Pounds 390 427 895 950

Base Unit 90MU

Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6

Qty Unloading Cylinders

Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) PSIG

Closes (90MA)

Opens (90MU)

Closes (90MU)

SUCTION PRESSURE SWITCH

Opens PSIG

Closes

REFRIGERANT

Typ

Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type

Water Volume Gallons 0.39 0.86

EVAPORATOR AIR FAN

Nominal Flow CFM 1200 2000 3000 4000

Standard Speed Range RPM 647-915 647-915 487-690

Maximum Allowable Speed

Belt Qty/Pulley Pitch Diamete

Motor Pulley Pitch Diameter Range

Motor Nominal Rating (@ 60Hz)…Frame Size

Standard

Alternate (SeeNote 1)

Alternate (See Note 1)

EVAPORATOR COIL

Tube

Qty Rows…Fin Spacing

Face Area

RETURN AIR FILTERS

Qty…Size Inches

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1/2 3/4 1 1

Water Outler (top)

Maximum Working Pressure (Refrigerant Side) PSIG

CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts Watts

Capacity @ 400 volts

Number of Electric Heat Stages

Tons 3 5 7.5 10

R-

Pounds 330 360 835 890

Pounds 25 25 50 50

0 2

1 2

Semi-Hermetic, RecipScroll

PSIG PSIG

PSIG

395+/-10 295+/-10

320+/-20

426+/-7

PSIG

27+/-4 67+/-4

Pounds 3.1 5.3 11.2 10.0

R-

1…Tube in Tube

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60hz

2.42

591-838

RPM

1250

Inches 1 / 6.4 1 / 6.4 1 / 8.5 1 / 7.0

Inches

2.4 to 3.4 inches

HP 1/3…56 3/4…56 1…56 2…56

HP 3/4…56 1…56 2…56 3…56

HP N/ N/ 3…56 N/

Fins/Inch 2…14.4 3…14.4

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…12.5

Sq Ft 5 5 7.3 8.5

2…16 x 25 x 1 4…16 x 20 x 1

Factory Supplied, Cleanable

Inches FPT 1/2 3/4 1 1

Inches FPT

400

3/4

Watts

5.25

4.03 1

17.5

13.4 2

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Pg 4

TABLE 2A - 90MA/MU PHYSICAL DATA – R-134A , SI UNITS

BASE UNIT (90MA/MU) UNITS 308 312 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA kg 406 431 Base Unit 90MU Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6 Qty Unloading Cylinders Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) Closes (90MA) Opens (90MU) Closes (90MU)

SUCTION PRESSURE SWITCH

Opens kPa Closes

REFRIGERANT

Typ Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type Water Volume Lite

EVAPORATOR AIR FAN

Nominal Flow m3/h Standard Speed Range Maximum Allowable Speed Belt Qty/Pulley Pitch Diamete Motor Pulley Pitch Diameter Range Motor Nominal Rating (@ 60Hz)…Frame Size Standard Alternate (SeeNote 1) Alternate (See Note 1)

EVAPORATOR COIL

Tube Qty Rows…Fin Spacing Fins/cm Face Area

RETURN AIR FILTERS

Qty…Size cm

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1 1 Water Outler (top)

Maximum Working Pressure (Refrigerant Side) kPa CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts kW

Capacity @ 400 volts

Number of Electric Heat Stages

kW 19.3 28.1

R-

kg N/ N/

kg 22.7 22.7

Semi-Hermetic, Recip

0 2

1 2

kPa

2310+/-69

1620+/-138

N/ N/

kPa

48+/-12

152+/-35

kg 5.1 4.5

R-

1…Tube in Tube

9.2

Adjustable, Belt Driven Centrifugal:1750 RPM Motor @60hz

4245 5660

RPM 402-570 488-692

RPM

1250

cm 1 / 21.6 1 / 17.8

6.1 to 8.6 cm

kW 0.75…56 1.5…56

kW 1.5…56 2.2…56

kW 2.2…56 N/

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…4.9

m2 0.68 0.79

Factory Supplied, Cleanable

4…40.6 x 50.8 x 2.5

Inches FPT 1 1

2758

Inches FPT

3/4

17.5

13.4 2

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Pg 5

TABLE 2B - 90MA/MU PHYSICAL DATA – R-407C , SI UNITS

BASE UNIT (90MA/MU) UNITS 404 406 408 412 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA kg 177 194 406 431 Base Unit 90MU Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6 Qty Unloading Cylinders Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) Closes (90MA) Opens (90MU) Closes (90MU)

SUCTION PRESSURE SWITCH

Opens kPa Closes

REFRIGERANT

Typ Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type Water Volume Lite

EVAPORATOR AIR FAN

EVAPORATOR COIL

Tube Qty Rows…Fin Spacing Fins/cm 2…5.7 3…5.7 Face Area

RETURN AIR FILTERS

Qty…Size cm

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1/2 3/4 1 1 Water Outler (top)

Maximum Working Pressure (Refrigerant Side) kPa CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts kW

Capacity @ 400 volts

Number of Electric Heat Stages

kW 10.5 17.6 26.4 35.1

R-407C

kg 150 163 379 404

kg 11.3 11.3 22.7 22.7

0 2

1 2

kPa

Scroll Semi-Hermetic, Recip

N/ N/

2725+/-69

2034+/-138

2937+/-48

2206+/-138

kPa

186+/-28 462+/-48

kg 1.4 2.4 5.1 4.5

R-407C

1.48 3.3

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor@60hz

1698 2830 4245 5660

1…Tube in Tube

9.2

RPM 534-757 534-757 402-570 488-692

RPM

1250

cm 1 / 16.3 1 / 16.3 1 / 21.6 1 / 17.8

6.1 to 8.6 cm

kW 0.25…56 0.56…56 0.75…56 1.5…56

kW 0.56…56 0.75…56 1.5…56 2.2…56

kW N/ N/ 2.2…56 N/

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…4.9

m2 0.46 0.46 0.68 0.79

2…40.6 x 63.5 x 2.5 4…40.6 x 50.8 x 2.5

Factory Supplied, Cleanable

Inches FPT 1/2 3/4 1 1

2758

Inches FPT

3/4

5.25 17.5

4.03 13.4 1 2

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Pg 6

TABLE 2C - 90MA/MU PHYSICAL DATA – R-404A , SI UNITS

BASE UNIT (90MA/MU) UNITS 504 506 508 512 NOMINAL CAPACITY REFRIGERANT OPERATING WEIGHT

Base unit 90MA kg 177 194 406 431 Base Unit 90MU Discharge Plenum

COMPRESSOR TYPE

Qty Cylinders 4 6 Qty Unloading Cylinders Qty Capacity Steps

DISCHARGE PRESSURE SWITCH

Opens (90MA) Closes (90MA) Opens (90MU) Closes (90MU)

SUCTION PRESSURE SWITCH

Opens kPa Closes

REFRIGERANT

Typ Qty (90MA ONLY))

CONDENSER (90MA ONLY)

Number...Type Water Volume Lite

EVAPORATOR AIR FAN

Nominal Flow m3/h Standard Speed Range Maximum Allowable Speed Belt Qty/Pulley Pitch Diameter Motor Pulley Pitch Diameter Range Motor Nominal Rating (@ 60Hz)…Frame Size Standard Alternate (SeeNote 1) Alternate (See Note 1)

EVAPORATOR COIL

Tube Qty Rows…Fin Spacing Face Area

RETURN AIR FILTERS

Qty…Size cm

CONDENSER CONNECTIONS (90MA ONLY)

Water Inlet (bottom) Inches FPT 1/2 3/4 1 1 Water Outler (top)

Maximum Working Pressure (Refrigerant Side) kPa CONDENSATE DRAIN CONNECTIONS ACCESSORY ELECTRIC HEAT

Capacity @ 460 volts kW

Capacity @ 400 volts

Number of Electric Heat Stages

kW 10.5 17.6 26.4 35.1

R-

kg 150 163 379 404

kg 11.3 11.3 22.7 22.7

0 2

1 2

kPa

Scroll Semi-Hermetic, Recip

N/ N/

2725+/-69

2034+/-138

2937+/-48

2206+/-138

kPa

186+/-28 462+/-48

kg 1.4 2.4 5.1 4.5

R-

1.48 3.3

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor@60hz

1698 2830 4245 5660

1…Tube in Tube

9.2

RPM 534-757 534-757 402-570 488-692

RPM

1250

cm 1 / 16.3 1 / 16.3 1 / 21.6 1 / 17.8

6.1 to 8.6 cm

kW 0.25…56 0.56…56 0.75…56 1.5…56

kW 0.56…56 0.75…56 1.5…56 2.2…56

kW N/ N/ 2.2…56 N/

Fins/cm 2…5.7 3…5.7

3/8 OD, Copper Tubes, Aluminum Fin

Prime

3…4.9

m2 0.46 0.46 0.68 0.79

2…40.6 x 63.5 x 2.5

Factory Supplied, Cleanable

4…40.6 x 50.8 x 2.5

Inches FPT 1/2 3/4 1 1

2758

Inches FPT

3/4

5.25 17.5

4.03 1 2

13.4

LEGEND FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

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