HEATER SUBASSEMBLY UNIT MAINTENANCE

TM 9-4120-425-14&P

HEATER SUBASSEMBLY UNIT MAINTENANCE

0028-00

THIS WORK PACKAGE COVERS:

Inspection, Test, Removal, Repair, and Installation

INITIAL SETUP:

Maintenance Level

Unit

Tools and Special Tools

Tool Kit, General Mechanics (Item 1, Table 2, WP 0118-00)

Materials/Parts

Lint Free Cloth (Item 9, WP 0121-00)

Warm Soapy Water

References

Schematic Diagram, WP 0122-00

Heater Cutout Switches WP 0027-00

Test Equipment

Multimeter

Equipment Condition

Air conditioner shut down and cool.

Power disconnected from unit.

Top covers removed (WP 0019-00).

Circuit breaker panels, control module and junction box partially removed (WP 0033-00,

Heater cutout switches tested (WP 0027-00).

WARNING

Allow heating elements to cool for 15 minutes or more before touching.

WARNING

Disconnect air conditioner power supply.

0028-00-1