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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-36. CIRCULATING AIR IN RFI FILTER.
This task covers:
Removal
Service
Inspection
Replace
Installation
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Materials:
Adhesive (Item 1, Appendix E)
Bulk gasket material
Rags (Item 12, Appendix E)
Equipment Conditions:
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.
1.
Disconnect air conditioner input power at source.
2.
Remove return air filter (para 3-5).
REMOVAL
1.
Remove seven screws (1) (see Figure 4-39).
2.
Remove filter (2).
SERVICE
Vacuum all dust or dirt from filter.
INSPECTION
1.
Check filters for punctures, cuts and damaged edges that would allow passage of unfiltered air.
2.
Check filters for packed or mashed areas that would block air flow.
3.
Replace filter if defective.
REPLACE
Replace filter if found to be damaged.
INSTALLATION
1.
If RFI gasket is not to be installed on replacement filter, proceed to step 4.
2.
On replacement filter, coat surfaces of metal and gasket with adhesive. Let both surfaces dry until adhesive is
tacky but will not stick to fingers.
3.
Starting with an end, carefully attach gasket to metal surface. Press into firm contact all over.
4.
Position filter (2) in place.
5.
Install seven screws (1).
4-68
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