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10. Trouble-shooting
10
Tr ou ble -s ho oti ng
In the case of faults or warnings that are detected by the compressor control DELCOS XL, please refer to the
chapter "Fault/warning table" in the operating instructions of the DELCOS XL.
Malfunction
Unit cannot be started
Unit stops during the
start-up phase
Unit does not reach the
set mains pressure
Possible cause
1.
No operating or control voltage
2.
Malfunction not acknowledged
3.
Pressure reservoir not depressurized
4.
Electric motor defective
5.
Compressor defective
6.
Ambient temperature less than
+1 °C (33.8 °F)
7.
Remote control/timer has been
activated via terminal strip
8.
Mains pressure is above the lower
switch set point (L90-L140) or the
prescribed pressure (L90RS-L132RS)
1.
Intake regulator only closes partly,
pressure builds up too quickly in the
pressure reservoir
2.
Short-circuit in the unit
3.
Connecting terminals in the switch
cabinet are loose
4.
Oil too viscous
5.
Maximum motor switching cycles
exceeded due to too frequent manual
on and off-switching
1.
Mains pressure sensor set too low
2.
Intake regulator opens only partly
3.
Excessive air consumption
4.
Fine separator clogged
5.
Air filter clogged
6.
Heavy leakage in the compressor
system
Remedy
1.
Check fuses, main switch and supply line
2.
Acknowledge fault message
3.
Wait until depressurized. Screw
compressor does not start up, when
reservoir pressure is > 0.8 bar (11.6 PSI)
(L90-L140) or > 2.0 bar (29.0 PSI)
(L90RS-L132RS)
4.
Check connections, winding, etc.
5.
Turn the compressor manually;
if required, replace
6.
Make sure that the ambient temperature
is not less than +1 °C (33.8 °F); install an
auxiliary heater, if required
7.
Deactivate remote control/timer
8.
Wait until the mains pressure has fallen
below the lower switch set point/
prescribed pressure
1.
Fix intake regulator or, if required,
replace; check solenoid valves
2.
Determine and eliminate cause; replace
defective fuses
3.
Check and re-tighten
4.
Select the type of oil according to the
ambient conditions or install an auxiliary
heater
5.
Avoid frequent manual on and off-
switching, let electric motor cool down
1.
Check, re-set
2.
Fix intake regulator or, if required,
replace; check solenoid valves
3.
Reduce consumption or cut in a further
compressor
4.
Replace fine separator cartridge
5.
Replace air filter cartridge
6.
Check unit
55
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