Troubleshooting; Electrical; Refrigeration - Aircel VF-10 Installation And Operation Manual

Troubleshooting

WARNING!
• Before any service or maintenance
work is performed on the
refrigerated air dryer system,
disconnect power supply and lock
out power supply and depressurize
system.
• Follow proper lock out/tag out
procedures before performing
service or maintenance work.
• Prior to performing any
maintenance on the dryer, all
personnel are strongly advised to
familiarize themselves with the
equipment by reading the entire
contents of this operation manual.
• Follow all safety procedures prior to
performing any maintenance activity
on the dryer.
If there is a problem with the refrigerated air dryer
or contamination down stream is present, the
problem may be identified from one or more of the
following sources:

• Electrical

• Refrigeration

• Condensate removal (drains)
• Other
Non-Cycling Refrigerated Air Dryer
Electrical
WARNING!
• Follow proper lock out/tag out
procedures before performing
service or maintenance work.
• Electrical installation or maintence
must be performed by a qualified
electrician and comply with all
applicable national and local codes.
• Make certain that the dryer is connected
to proper power supply in accordance with
electrical diagram provided.
• Check electrical breaker, fuse, or disconnect to
determine if there is electrical power to the unit.
• A quick check should determine if the power
switch is turned on and the unit is running.
• After determining that power is supplied to the
unit, go to the next step.
Refrigeration
WARNING!
Refrigerant handling must be performed
by a qualified technician and all
applicable national and local codes
must be followed.
Notice: Always observe refrigerant pressure
gauge(s) to determine if and how
refrigeration circuit is operating.
Non-cycling refrigerated air dryers with R-134a
refrigerant should have a suction gauge pressure
reading of 28-40 psig and a discharge gauge
pressure reading of 160-250 psig with the unit in
the on position under full or partial load. If the
refrigerant gauge(s) reads more or less than the
above specified pressures, troubleshoot items on the
following page.
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