User`s guide

PUREGAS, LLC P550W Series Air Dryers User’s Guide
Page 66 of 99 P011658 – Rev. M
9.9 Testing Air Dryer Fan
NOTE: To test the fan, the cabinet temperature must be above 90 F.
9.9.1 Place your hand outside the
Dryer to feel for air being
blown outwards.
NOTE: The fan will turn OFF when the cabinet temperature is below 80 F.
If the fan is not blowing air outwards as described:
 Verify the cabinet temperature is above 90  F.
 Check for loose wiring. Refer to the Wiring Diagram (section 14.1 )
 Replace defective fan (see sections 11.1 for part detail and 11.5 for
ordering information).
 Replace defective control board if fan does not respond properly to
temperature changes (see sections 11.1 for part detail and 11.5 for
ordering information).
9.10 Testing Compressor ON/OFF Cycling
9.10.1 When the Unit Screen
(8.5.5.1 ) appears on the
display, press the HOLD
Button on the Front Panel to
freeze that screen.