Sullair SR-250 - 6 Calibration; Trouble Shooting; 7 Spareparts List

11
Code: 02250145-- 604 SR-- 250 --- SR -- 3000
English
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:Alwaysbypassthedryerwhenitisoutofservice.
Fan pressure
switch (PV) in-
correctly cali-
brated
Repair
fan
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
No
No
No
Yes
Yes
No
Yes
Yes
Yes
No
No
Yes
FAULT
CAUSE
REMED Y
and
high dew
point
High air
outlet
temperature
Thermostat ST
or overload
protector P I
tripped
Compressed
air pressure
too low
Increase air
pressure
Condenser dirty
(cooling
air outlet
too hot)
Clean
condenser
Fan does
not work
Repair
fan
Ambient
temperature
over 122˚F
(50˚C)
Reduce
temperature
High
refrigerant
discharge
pressure
Compressor
components
perished
Repair or
replace com-
pressor
Seek exter-
nal assis-
tance
Compressor
winding insulation
partially per ished
(compressor
too hot)
Low current
consumption
Lack of
refrigerant:
Recharge
Condenser dirty
(cooling
air outlet
too hot)
Clean
condenser
Fan does
not work
Low
evaporation
pressure
Bypass air by keep-
ing air inlet open.
Manually open con-
densate drain. Re-
pair before restarting
(Check hot gas valve
setting)
Excessive
thermal load
(compressor
head too hot )
Reduce
compressed air
quantity or
air
temperature
Compressor
noisy
Excessive
current
consumption
Ice
formation
High refriger-
ant discharge
pressure
No
Yes
Calibrate or
replace
valve
No
Condenser
dirty
Yes
Clean
condenser
Replace
fan
No
Yes
Fan does
not work