RFI (Radio Frequency Interference) Filters (FL1, FL2, FL3 and FL4)

TM 5-4120-393-14

4-53. RFI (Radio Frequency Interference) Filters (FL1, FL2, FL3 and FL4)

This task covers:

a. Removal

c. Installation

b. Inspection/Testing

Initial setup.

Tools:

Tool kit, service, refrigeration unit NSN 5180-00-596-1474

Personnel: 1

Equipment condition:

1. Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power cable

to air conditioner.

2. Remove junction box number two. See para 4-46.

General Safety Instructions:

WARNING

Disconnect input power to the air conditioner before performing any internal

maintenance. Voltages used can KILL. Shutting the unit off at the control panel

does not disconnect unit power.

REMOVAL

Using screwdriver, remove eight screws (1) from junction box cover and remove cover (2).

Tag and unsolder electrical leads.

Using wrench, remove four nuts (3) and lock washers (4) which hold the four filters (5) to the filter bracket.

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