DECONTAMINATION - TM-5-4120-369-140128

TM 5-4120-369-14

6-5.

DECONTAMINATION - Continued.

Decontaminate system as follows:

Procedure.

Step 1.

Discharge system (paragraph 6-4) and purge with nitrogen

Step 2.

Remove defective motor-compressor (paragraph 5-31).

Remove dehydrator (paragraph 5-20).

Step 3.

With compressor out of system, purge all lines with dry nitrogen

Step 4.

Install a new compressor (paragraph 5-31) containing a full and proper

Step 5.

oil charge.

Step 6.

Install new dehydrator (paragraph 5-20).

In step (10) this dehydrator

will again be replaced.

Triple evacuate system and charge with refrigerant R22.

Step 7.

Start air conditioner (paragraph 2-5) and operate unit for 24 hours.

Step 8.

Discharge system and purge with nitrogen (paragraph 6-4).

Step 9.

Install new dehydrator (paragraph 5-20).

Step 10.

Evacuate system (paragraph 6-4) and recharge with refrigerant

Step 11.

Operate air conditioner.

Step 12.

EVAPORATOR AND CONDENSER COILS.

6-6.

a. Inspection. Inspect coils for damaged tubing and bent fins. Inspect threaded holes

for damaged or stripped threads.

b. Repair. Repair any leaks. Straighten bent fins.

Repair or replace damaged tubing

if possible. Replace coil if repair is not practical.

6-6