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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 903 Catalog No. 533-089 Printed in U.S.A. Form 30GTN-8SI Pg 1 704 4-99 Replaces: NewBook 2

Tab 5c

Installation Instructions

Accessory Compressor Protection Control SystemPart No. 30GB900131

50 and 60 Hz

GENERAL

Check Package Contents (Table 1) for shippingdamage. If damage is found or any part(s) is missing, file aclaim with the shipper immediately.

Table 1 Package Contents

LEGEND

CPCS Compressor Protection Control System

INSTALLATION

Units without Current Sensing Board1. Cut off all quick-connect terminals from wires connected

to compressor control relays, being careful not to cut offwire markers.

2. Remove and discard the 2 control relays (see Fig. 1).

3. Using screws provided, position the 2 compressor protec-tion control system (CPCS) boards (see Fig. 2) over thepredrilled holes in the area where the control relays wereremoved.

4. Strip back1/2 in. the wires cut in Step 1. Crimp the 1/4-inquick-connects provided to the wires.

5. Route the compressor power wires through the toroids asshown in Fig. 3, and connect toroids to terminals 23 and24 on the appropriate compressor protection boards.

6. Reconnect the compressor power wires to the circuibreakers and connect the wires to the CPCS boards. SeeFig. 4 for equivalent CPCS connections to the former CR(control relay) connections. Be sure to connect the appro-priate toroid for the proper compressor.

7. Restore power to the unit.

ITEM DESCRIPTION QTY PART NO.

1 CPCS Assembly 2 HN65KZ0272 Toroid 2 HT08DZ0253 Sheet Metal Screw; 4 AL56AU128

4No. 6B-20 x 3/4-in. long1/4-in. Quick-Connect

20 HY69DS057

ELECTRIC SHOCK HAZARD

To avoid the possibility of electrical shock,open all disconnects before installing orservicing this equipment.

30GTN,GTR,GUN,GUR040-070Compressor Protection Control System

(CPCS)50/60 Hz

Fig. 2 Compressor Protection Control System (CPCS)

CPCS-A1070 50HZ

ONLY

CPCS-B1070 50HZ

ONLY

CR-A1 CR-B1

LEGEND

Fig. 1 CPCS Installation

CPCS Compressor Protection Control SystemCR Control Relay

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LEGEND

CB Circuit Breaker NC Normally ClosedCOM Common NO Normally OpenCPCS Compressor Protection SN Toroid

Control System TB Terminal Block

NOTE: Power wires from terminal block TB1 to circuit breakersCB-A1 and CB-B1 must be routed through the appropriate toroids.CPCS-A1 is for compressor no. A1; CPCS-B1 is for compressorno. B1.

Fig. 3 Compressor Power Routing

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12

11

10

9

8

7

6

5

4

3

2

11

2

3

4

5

6

7

8

9

10

11

12

J9

MAIN BASE

BOARD

PNK

CPCS-A2

VIO

GRA

RED

S2 S1

S2 S1

CPCS-B1

3 1

S2 S1

3 1

CR-B1CPCS-A1

CR-A1

070 50HZONLY

RED

RED

3 S1 S2

R1 C

23 24

TOROID

COM NC

NO

8

9

7

C1 C2

(FAULT CURRENT)

STANDARD: 040-060 50HZ

040-070 60HZ

040-070 60HZ

CR CPCS

1

STANDARD: 070 50HZACCESSORY: 040-060 50HZ

LOGIC

A1/B1

CR

040-070 60HZ

LEGEND

COM Common

CPCS Compressor Protection Control SystemCR Control RelayNC Normally ClosedNO Normally Open

CPCS CONTROL WIRING

Fig. 4 Equivalent Connections Control Relay and Compressor Protection Board Module(Units without Current Sensing Board)

CPCS CONTROL CONNECTIONS

CPCS FEEDBACK CONNECTIONS

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 903 Catalog No. 533-089 Printed in U.S.A. Form 30GTN-8SI Pg 4 704 4-99 Replaces: NewBook 2

Tab 5c

Copyright 1999 Carrier Corporation

Units With Current Sensing Board

NOTE: Units with starting serial number 0204F were pro-duced with factory-installed current sensing board.

1. Cut off all quick-connect terminals from wires connectedto compressor control relays, being careful not to cut offwire markers.

2. Remove and discard the 2 control relays (see Fig. 1).

3. Using screws provided, position the 2 compressor protec-tion control system (CPCS) boards (see Fig. 2) over thepredrilled holes in the area where the control relays were

removed.4. Strip back1/2-in. the wires cut in Step 1. Crimp the 1/4-in.

quick-connects provided to the wires. Four extra quickconnects will remain.

5. Route the compressor power wires through the toroids asshown in Fig. 3, and connect toroids to terminals 23 and24 on the appropriate compressor protection boards.

6. Reconnect the compressor wires to the circuit breakersand connect wires to the CPCS boards. See Fig. 5 forequivalent connections to the former CR (control relay)connections. Be sure to connect the appropriate toroid forthe proper compressor. The feedback portion of theCPCS must not be connected to the main base board J9terminal strip because the current sensing board providesthe feedback.

7. Restore power to the unit.

TESTINGTo check the compressor protection boards for proper oper-

ation, during Test mode check COMP, CCA1, and CCB1 asdescribed in the Controls and Troubleshooting Guide.

R1 C

23 24

TOROID

COM NC

NO

8

9

7

C1 C2

(FAULT CURRENT)

STANDARD: 040-060 50HZ

040-070 60HZ

040-070 60HZ

STANDARD: 070 50HZACCESSORY: 040-060 50HZ

LOGIC

A1/B1

CR

CR CPCS

040-070 60HZ

LEGEND

COM CommonCPCS Compressor Protection Control SystemCR Control RelayNC Normally ClosedNO Normally Open

CPCS CONTROL WIRING

Fig. 5 Equivalent Connections Control Relay and Compressor Protection Board Module(Units with Current Sensing Board)

CPCS CONTROL CONNECTIONS