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1. Turn off power to the compressor, crank case

heater and module.*

2. Isolate the compressor and evacuate per accept-

ed industry practice.

3. Inside the Rear Terminal Box (figure 5.6)

a. Remove terminal lug nuts holding voltage

sensing eyelets.

b. Loosen terminal lug connections.

c. Remove T-box anchor screw holding the box

to the compressor.

Figure 5.6 Terminal Box

4. Unplug the low and high voltage Harness

Connectors (Deutsch plugs) from the terminal

box. (figure 5.7) *

Figure 5.7 Deutsch Plugs

5. Remove screw “B” from the side box into the rear

terminal box.

6. Unplug all harness connections in the side box,

and loosen temperature sensor ground screw. *

7. Remove the front cover (2 screws) and unplug the

communication plug from the module and careful-

ly extract the communication line out of the mod-

ule. *

Low

Voltage

High

Voltage

Voltage Sensing Leads

(4x) anchor screws - same

location as conventional 2D/3D

5.2 Compressor Replacement - 2D and 3D

5.2.1 Removal of the Compressor

Note: The following instructions assume the same front module is being used on the new compressor. If the

module is being replaced, refer to module change-out procedures for start-up procedures. Steps with an *

indicate they pertain to module replacement instructions in section 5.3.

Reference Drawing of 2D / 3D Enclosure and Accessories

TEMPERATURE SENSOR

GROUND SCREW

LOW PRESSURE CUTOUT SWITCH AND CONNECTOR

White Dot in Center

Blue Wire Harness (LPCO)

HOUSING COVER NUTS

SCREWS “A”

FRONT CONTROL BOX

HARNESS ANCHOR

HIGH PRESSURE CUTOUT SWITCH AND CONNECTOR

Red Dot in Center

Red Wire Harness (HPCO)

DISCHARGE TEMPERATURE PROBE

Black/White Harness

Attach Green Wire to Ground Screw

SCREW “B”

SIDE BOX

DEMAND COOLING

SOLENOID COIL

Brown Wire Harness

(Liquid Injection)

HARNESS CONNECTORS

To Remove: Depress 2 tabs before pulling

To Install: Push in until connector “snaps”

Install Torque

25-30 ft-lb

AE8-1337 R1

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 70 71

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