Troubleshooting - Sullair SR 250 Manual De Uso

8 Trouble shooting
The following diagram lists the various problems which may occur during the dryer's
service life. In the case of serious difficulties however, contact a refrigerant special-
ist.
For alarms and warnings refer also to para. 4.4.
NOTE: Always bypass the dryer when it is out of service.
high dew
FAULT
point
Compressed
air pressure
No No
too low
Yes
CAUSE
Increase air
pressure
Fan does
not work
and
Yes
Repair
fan
REMEDY
Code: 02250145- - 604 SR- - 250 --- SR- - 3000
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Thermostat ST
High air
or overload
outlet
protector PI
temperature
tripped
Ambient
Condenser dirty
temperature
(cooling
Yes
over 122˚F
air outlet
(50˚C)
too hot)
No
Yes
High
Clean
refrigerant
condenser
discharge
Yes
pressure
No
No
Reduce
Excessive
compressed air
thermal load
quantity or
(compressor
Yes
air
head too hot)
temperature
No
Lack of
Low current
refrigerant:
consumption
Yes
Recharge
No
Excessive
Compressor
current
noisy
consumption
Condenser dirty
Reduce
Clean
(cooling
temperature condenser
air outlet
Yes
too hot)
No
Repair Fan does
fan not work
Yes
No
Compressor
components
No
perished
Yes
Compressor
Repair or
winding insulation
replace com-
partially perished
pressor Yes
(compressor
too hot)
No
High refriger-
Ice
ant discharge
formation
pressure
Fan pressure
Low
Calibrate or
switch (PV) in-
evaporation
replace
Yes correctly cali-
pressure
valve
brated
Yes
No
Clean
Condenser
condenser
dirty
Yes
No
Fan does
Replace
fan not work
Yes
No
Bypass air by keep-
ing air inlet open.
Manually open con-
densate drain. Re-
pair before restarting
(Check hot gas valve
setting)
Seek exter-
nal assis-
tance
English
11