AIRTAK SD30 Instrukcja obsługi - Strona 7
Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Osuszacz powietrza AIRTAK SD30. AIRTAK SD30 9 stron. Refrigerated air dryers
Drukuj stronęTROUBLESHOOTING GUIDE continued
9. Shortage of refrigerant
10. Refrigeration system is not functioning.
11. Excessive pressure dew point.
High
1. Excessive air flow
Pressure
Drop
2. Freeze up
The unit will
1. Line disconnect switch is open. Power
not run or
on light will be off.
cycles off
and on.
2. Fuse or breaker is open. Power on light
will be off.
Fix the leak and add a charge of
refrigerant. Loss of refrigerant will cause
improper functioning. A qualified
refrigerant specialist should perform the
necessary repairs, or factory should be
contacted if the unit is under warranty.
Check to be certain refrigerant
compressor is running. It is possible for
the fan to be operating but not the
compressor. Compressor not running
can be caused by several factors. A
qualified refrigeration contractor should
check refrigerant and electrical controls.
Readjust expansion valve. The
expansion valve operates like a pressure
regulator. Loosen lock nut. Turning the
adjustment screw on the expansion valve
counterclockwise decreases refrigerant
pressure and lowers refrigerant
temperature. Adjust valve in ¼ turn
increments to allow 15 minutes for
pressure stabilization with air flowing.
Caution: too low a setting can cause
moisture in heat exchanger to freeze.
Check the air flow. This dryer is
designed for a specified air flow as
indicated. If air flow into the dryer
exceeds specifications, the water
removal capacity may be insufficient
resulting in a liquid carry-over
downstream. Check the flow of the air
system.
Readjust refrigeration controls. Frosting
of the lines is an indication the controls
are set too low. MODELS 10 SCFM
THROUGH 40 SCFM -Controls may be
adjusted in the field by means of the
expansion valve adjustment screw.
MODELS 50 SCFM THROUGH 250
SCFM Controls may be adjusted in the
field by means of the hot gas bypass
valve. Loosen lock nut. Turn screw
clockwise to increase refrigerant
pressure setting which will increase
refrigerant temperature. Turn screw in ¼
turn increments until frost disappears.
Allow 15 minutes between adjustments
for pressure stabilization with air flowing.
Close the start or disconnect switch. If
the dryer is not operating check the
disconnect switch or circuit breaker to be
certain it is on.
Replace fuse or reset the breaker. The
fuse to the power line should be
checked. Make sure the correct size
fuse is used. See data tag label for
correct fuse size.
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