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STEAM MODELS
1. No (external) compressed air (80 PSI required) to steam damper solenoid.
2. Flow control valve is not adjusted correctly...
a. Too much restriction.
3. Failed steam damper pneumatic (air) solenoid.
4. Damper stuck in "closed" position...
a. Check for obstruction.
5. Leak in the pneumatic (air) system.
6. Failed air piston.
J. Dryer operates but is taking too long to dry...
1. Exhaust duct work run too long or is undersized...back pressure cannot exceed .3 inches water column
(W.C.).
2. Restriction in exhaust...
a. Customer-furnished exhaust back draft damper is sticking partially closed.
b. Restriction in duct work...
1) Check duct work from dryer all the way to the outdoors.
3. Insufficient make-up air.
4. Impellor (blower/fan) "squirrel cage" is rotating in the wrong direction.
5. Lint drawer screen is dirty or is not being cleaned often enough.
6. Inadequate air flow...
a. Impellor (blower/fan) "squirrel cage" failure.
b. Loose impellor (blower/fan) "squirrel cage" drive V-Belts.
7. Gas Models
a. Low and/or inconsistent gas pressure...
Natural Gas pressure must be between 3.5 inches and 4.0 inches of water column.
Liquid Propane (L.P.) pressure must be between 10.5 inches and 11.0 inches of water column.