User`s guide

PUREGAS, LLC P550W Series Air Dryers User’s Guide
Page 85 of 99 P011658 – Rev. M
13.3 Air Dryer Won’t Power ON
Possible Cause Check Corrective Action
POWER Switch in
OFF position
Verify POWER switch
is in the ON position
(section 8.4 )
Turn POWER switch to
the ON position (section
8.4 )
No incoming voltage to
air Dryer
Measure incoming
voltage (section 9.4 )
Troubleshoot facility
power supply to air
Dryer
WARNING!
Extreme care should be exercised to avoid contact with live
electrical circuits. Many procedures performed during
installation, operation, testing, and maintenance of this air Dryer
require the equipment to be running, creating a situation for
potential electrical shock. It is highly recommended that you
remove all jewelry before performing any procedures.
CAUTION!
Depressurizing the air Dryer may be necessary before performing
certain procedures. NEVER remove pressure sensing tubes from
the Control Board without depressurizing the air Dryer first, or
damage to the Control Board will occur.
IMPORTANT!
Performing procedures not described in this User’s Guide or
installing components not supplied by PUREGAS is NOT
RECOMMENDED AND MAY VOID THE WARRANTY.
CAUTION!
Do not test the Humidity Sensor with an ohm meter or apply
any DC voltage. This will render the Humidity Sensor defective.