Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 67 / 92

Malfunctions
67
11.2 Pump or Roots does not start
11.2.1 The white indicator light Power does not switch on
11.2.2 HHR display is not lighting up
11.3 The pump is running and HHR is showing a fault message
Incident Cause Remedy
Power indicator light does not
switch on
No mains Check power supply.
Main switch on position O Switch it on I.
External emergency stop engaged Check the presence of cover plug EMS or check
its locking.
Unit emergency stop engaged Rotate to unlock the emergency stop on the front
panel.
Other problem Contact your service center.
Incident Cause Remedy
HHR display is not lighting up, but
Power indicator light is lit
Twisted cable incorrectly connected Check the connection.
Other problem Contact your service center.
Incident Cause Remedy
PW01/W01/PD01 EXH. PRESS Exhaust pressure > Thresholds Check the nitrogen flow rate setting value (see
5.4.2) .
Check that exhaust pipe line is not clogged.
Exhaust pressure < 550 hPa Check the connection of the sensor on FB PRESS
plug
(see 15.4) :
– Pressure sensor is faultly, replace it.
Exhaust pressure sensor faulty Check the displayed pressure on HHR, if the read-
ing is inconsistent, replace the sensor.
Monitoring faulty If the pressure sensor is operating but the dis-
played pressure is inconsistent, replace the moni-
toring.
Other problem Contact your service center.
D01 EXH. PRESS Exhaust pressure > 1990 hPa
or
The pump does not start and
the exhaust pressure > 1500 hPa
Check the nitrogen flow rate setting value (see
5.4.2) .
Check the exhaust pipe is not clogged.
Pressure sensor faulty Check the displayed pressure on HHR, if the read-
ing is inconsistent, replace the sensor.
Monitoring faulty If the pressure sensor is operating but the dis-
played pressure is inconsistent, replace the moni-
toring.
Other problem Contact your service center.
PW03/W03/D03 FB P DRIVE Incorrect FB threshold setting Check the settings of power thresholds [SET-
TING][POWER][FB POWER].
FB mechanical problem Check the rotation of the FB shafts (see 9.4)
Free the FB manually.
Problem with power reading Check current and voltage on the monitoring and/
or at the frequency inverter output.
If there is no frequency inverter, check the current
sensor.
Communication problem between monitoring and
FB frequency inverter Depending on the trouble, replace the monitoring
or the frequency inverter.
Communication problem (pump without frequency
inverter) Check the current sensor:
– the sensor is faulty, replace it.
Other problem Contact your service center.
W04/D04 IN ANA1
W50/D50 USER ANA Incorrect monitoring configuration
Inconsistent analog reading feedback
Check that [ANA 1], [ANA 2] or [ANA USER] is
[DISABLED] if input is not used.
Check the warning or fault thresholds.
Check that the voltage is in accordance with mon-
itoring display.
Sensor faulty Check the proper operation of the sensors con-
nected to these analog inputs.
Other problem Contact your service center.