User's Manual

Chapter 6 Maintenance

6.5.6.2 Air-to-Air Heat Exchanger/Heater Installation

he replacement air-to-air heat exchanger/heater should be installed in HB cabinet or LB

cabinet in the following sequence:

1. Before the replacement air-to-air heat exchanger/heater is installed, ensure that the

weatherproof gasket is placed on the side of the air-to-air heat exchanger/heater that

will rest against the side of the cabinet – see Figure 6-11

2. Using two handlers, one located on each side of the air-to-air heat exchanger/heater,

carefully lift the air-to-air heat exchanger/heater and place it in the opening in the

side of the cabinet.

3. Replace the twelve (12) 1/4-20 socket head cap screws (with 1/4” flat washers and

gaskets) which secure the air-to-air heat exchanger/heater to the cabinet – see Figure

6-10

. A torque rating of 45.6 Inch Lbs. must be used to tighten the screws.

4. Install four (4) cable tie mounts on the air-to-air heat exchanger/heater inside panel

– see Figure 6-9

5. Secure the two (2) temperature sensor cable assemblies (ELECTR COMP AIR INTAKE

and ELECTR COMP AIR EXH) to the cable tie mounts located on the air-to-air heat

exchanger/heater inside panel – see Figure 6-9

6. Re-connect the 8-pin pluggable terminal block to the air-to-air heat exchanger/heater

inside panel 8-pin terminal block receptacle – see Figure 6-9

7. Switch ON the HE circuit breaker (CB 5), located on the HB cabinet PDU or LB cabinet

PDU.

8. Close the electronics compartment front and rear doors.

SX03-2000

0-01-M01 6-25