Table 2-5. UNIT DRYER TROUBLESHOOTING PROCEDURES - continued
TEST OR INSPECTION
Step 2. Check for water in fuel by draining a small amount of fuel into a clear container. Look for fuel/water
separation and cloudy fuel.
If fuel/water separation is present and/or cloudy, drain fuel supply and refill with new fuel.
Step 3. Check for dirty burner nozzle.
If burner nozzle is dirty, clean burner nozzle.
EXCESSIVE SMOKE FROM DRYER EXHAUST.
Step 1. Check for improper adjustment of air shutter. Exhaust gases should be clear after two seconds.
If exhaust is not clear, adjust air shutter.
Step 2. Check for blocked air intake screen.
If blockage is found, remove blockage from air intake screen.
Step 3. Check for blocked air exhaust piping.
If blockage is found, remove blockage from exhaust piping.
Step 4. Check for dirty burner nozzle and electrodes.
If burner nozzle is dirty, clean burner nozzle. Refer to 2-55, Electrodes.
Step 5. Check for worn or broken rotary pump.
a. If pump is damaged, replace rotary pump. Refer to paragraph 2-53, Rotary Pump.
If problem still exists, notify Direct Support.
AIR LEAKS FROM DRYER DOOR.
Step 1. Check for damaged dryer door gasket.
Replace door gasket, refer to paragraph 2-64, Door.
Step 2. Check for loose door handle.
If door handle is loose, adjust or replace door handle. Refer to paragraph 2-64, Door.
Step 3. Check for bent door or broken weld.
Repair by replacing door. Refer to paragraph 2-64, Door.
Refer to Direct Support for broken weld.