13-25-639 v00 Page 54
In the case of faults or warnings that are detected by the compressor controller, please refer to the Section
“Fault/warning” in the operating instructions of the compressor controller.
Malfunction
Possible cause
Remedy
Unit cannot be
1.
No operating or control voltage
1.
Check fuses, main switch and supply line
started
2.
Malfunction not acknowledged
2.
Acknowledge fault message
3.
Pressure reservoir not depressurized
3.
Wait until depressurized
4.
Electric motor defective
4.
Check connections, winding, etc.
5.
Compressor defective
5.
Turn the compressor manually; if
required, replace
6.
Ambient temperature less than 34°F
6.
Make sure that the ambient temperature
is not less than 34°F; install an auxiliary
heater, if required
7.
Remote control/timer has been activated
7.
Deactivate remote control/timer
8.
Mains pressure exceeds the lower
switching point (L90-L132) or the
prescribed pressure (L132RS)
8.
Wait until the mains pressure has fallen
below the lower switching point
Unit stops during the
1.
start-up phase
Suction regulator only closes part way,
pressure builds up too quickly in the
pressure reservoir
1.
Make the suction regulator viable,
replace if necessary, check the solenoid
valve
2.
System short
2.
Determine cause and remedy, replace
defective fuses
3.
Connection terminal in switch cabinet is
loose
3.
Check and tighten
4.
Oil is too viscous
4.
Choose type of oil which suits the
environmental conditions or install an idle
heater
5.
Maximum motor cycles exceeded due to
manually switching off and on too often
5.
Avoid frequent manual on and off
switching, let the electric motor cool
Unit does not reach
1.
System pressure sensor set too low
1.
Check, reset
the set mains
2.
pressure
Suction regulator only opens partially
2.
Make the suction regulator viable,
replace if necessary, check the solenoid
valve
3.
Air bleed too large
3.
Throttle the bleed or attach additional
compressors
4
Fine oil separator is dirty
5.
Replace the fine oil separator cartridge
5
Air filter is dirty
6.
Replace air filter cartridge
6
Large leaks in the compressor system
7.
Check the unit
Summary of Contents for L Series
Page 58: ...13 25 639 v00 Page 57 Fig 28 all dimensions in inches...
Page 59: ...NOTES...