AIR DIFFUSER AND RETURN AIR GRILLS - TM-5-4120-374-130034

TM 5-4120-374-13

3-5. AIR DIFFUSER AND RETURN AIR GRILLS

This task covers:

c. Adjustment

a. Inspection

b. Service

I N I T I A L SETUP

Troubleshooting Reference

Material/Parts

AIR CONDITIONER, Malfunction 2, Step 3

Air Diffuser Grill

Approximate Time Required (in minutes)

Return Air Grill

Dry Cleaning Solvent, App. E, Items 2 & 3

Inspection and Service

Adjustment

References

None

T O T A L TIME

REMARKS

ACTION

LOCATION/lTEM

INSPECTION AND SERVICE

FRONT OF HOUSING

Dry cleaning solvent P-D-680 or P-S-661 used to clean parts is potentially

dangerous to personnel and property. Avoid repeated and prolonged skin contact.

Do not use near open flame or excessive heat. Flash point of solvent is 100F (38 C).

1. Air Diffuser Grill a. Brush off any loose dirt or foreign matter from air diffuser grill.

b. Wipe off air diffuser grill with a cloth moistened with dry cleaning

solvent, P-D-680 or P-S-661.

c. Inspect for and remove any obstructions.

d. Inspect air diffuser grill for security of attachment and damage.

e. Report damaged condition to organizational maintenance personnel.

2. Return Air Grill

a. Brush off any loose dirt or foreign matter from return air grill.

b. Wipe off return air grill with a cloth moistened with dry cleaning

solvent P-D-680 or P-S-661.

c . Inspect for and remove any obstructions.

d. Inspect return air grill for security of attachment and damage.

e. Report damaged condition to organizational maintenance personnel.

3. Return Air Control a. Adjust return air grill louvers by rotating return air control from

CLOSED to OPEN positions.

b. Verify return air grill louvers operate freely.

c. Report damaged condition to organizational maintenance personnel.