ETQ A16 - Page 15

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discharge air. humid weather. 2. Add a filter to reduce the amount of water

in the air line.

Tank does not

hold pressure

when

compressors off

and shut off

valve is closed.

1. Worn check valve

2. Check all

connections and

fittings for leaks.

3. Check tank for

cracks or pin holes

1. Replace check valve

2. Tighten

3. Replace tank. Never repair a damaged

tank.

Excessive

vibration

1. Loose fasteners

1. Tighten

Pressure switch

continuously

blows air out

the unloader

valve.

1. Malfunctioning check

valve

1. Replace the check valve if the unloader

valve bleeds off constantly.