KAESER ASD 25, Service Manual

Page: 63 / 138

Message Possible cause Remedy
fan M4 I ↥ Overload shut-down of the third fan
motor.
Investigate cause of shut-down.
Reset overload protection cut-out.
Call authorized KAESER Service
representative.
fan M7 I ↥ Overload shut-down of the control
cabinet fan motor.
Investigate cause of shut-down.
Call authorized KAESER Service
representative.
motor I ↥ Overload shut-down of the compres‐
sor drive motor.
Investigate cause of shut-down.
Change the oil separator cartridge.
Call authorized KAESER Service
representative.
motor T ↥ Drive motor overheated. Clean the motor.
Keep ambient conditions within
specified limits.
motor bearings Drive motor bearings overheated. Re-grease the motor bearings.
Call authorized KAESER Service
representative.
mains cont. on? Mains contactor not pulling in. Check mains contactor and wiring.
mains cont. off? Mains contactor not dropping out. Check mains contactor and wiring.
mains voltage ↧ 2nd. power failure. Check power supply voltage.
Check the door interlock switch.
mains monitor Fault in mains power supply. Have the mains power supply
checked.
Emergency stop EMERGENCY STOP push-button
pressed.
Unlatch the push-button.
OS dp ↥ Oil separator cartridge clogged. Change the oil separator cartridge.
OS T ↥ Maximum air temperature at the oil
separator tank outlet is exceeded.
Check the line to the trip relay.
oil p ↓ The machine cannot switch to LOAD
until the minimum oil pressure is
reached.
Check the oil circulation.
Check the pressure switch, line and
connection.
p-switch Customer specific:
no details possible.
–
pRV ↥ The activating pressure of the safety
relief valve on the oil separator tank
has been exceeded.
Change the safety relief valve.
oil content ↑ The oil content limit for pure air has
been exceeded.
Change the oil separator cartridge.
SIGMA CONTROL h ↥ The maximum permissible
SIGMA CONTROL housing tempera‐
ture has been exceeded.
Keep ambient conditions within
specified limits.
Control cabinet:
Check filter mats and fan.
Softstart Fault in the soft start equipment. Call authorized KAESER Service
representative.
9 Fault Recognition and Rectification
9.2 Alarm messages (machine shut-down)
9_5721 06 USE
Service Manual Screw Compressor
ASD T Tri-Voltage
53