Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 70 / 92

70
Malfunctions
D40 HAZ T° R1 MOT Roots 1 motor temperature is > 150 °C Check the water cooling supply on the pump.
Check that the Roots 1 motor is correctly cooled.
Check that the cooling pipes are not clogged.
Sensor not connected Check the connection of the sensor on
RSV1 MOTOR plug
(see 15.4) .
Other problem Contact your service center.
D41 HAZ T° FB MOT BF motor temperature is > 150°C Check the water cooling supply on the pump.
Check that the FB motor is correctly cooled.
Check that the cooling pipes are not clogged.
Sensor not connected Check the connection of the sensor on
FB MOTOR plug
(see 15.4) .
FB mechanical problem Free the FB manually (see 9.4) .
Other problem Contact your service center.
D42 HAZ EXT PRESS SEMI safety sensor problem (overpressure at ex-
haust) Check the sensor cable condition and sensor op-
eration
(see 7.13) .
Replace the sensor if necessary.
D43 EXH PRESS SEMI safety sensor problem (nitrogen pressure) Check the sensor cable condition and sensor op-
eration
(see 7.13)
.
Replace the sensor if necessary.
D44 FRAME PRESS SEMI safety sensor problem (exhaust ventilation) Check the sensor cable condition and sensor op-
eration
(see 7.13) .
Replace the sensor if necessary.
D46 ALARM T° FB FB temperature problem Check the water cooling supply on the pump.
Check the temperature setpoints and alarm
threshold
Check that the water pipe are not clogged.
W51/D51 USER T° Incorrect monitoring configuration Check that the [SETTING] [TEMPERATURE][US-
ER T°] is set on [DISABLED].
Incorrect threshold setting Check the warning or fault thresholds.
Other problem Contact your service center.
W52/D52 ROOTS 1 T° Incorrect monitoring configuration Check that the
[SETTING][TEMPERATURE][Roots 1 T°][CON-
TROL] or [MEASUREMENT] menu has set
thresholds.
Incorrect threshold setting. Check the warning or fault thresholds.
Cooling problem Check the water cooling supply on the pump.
Check that the cooling pipes are not clogged.
Sensor faulty Check the temperature reading on HHR as well as
the connections of the sensor on RSV1 TEMP
plug and of the valve on RSV1 VALVES plug
(see
15.4) .
Other problem Contact your service center.
W54/D54 HEATER Heater controller disconnected Check the cable connection on WH plug or if here
is a strap on WH plug
(see 15.4) .
Heater disconnected Check the cable connection on J2 heater control-
ler connector.
Other problem Contact your service center.
W57/D57 LP FB T°
either
LP T° > setpoint T +5°C FB LP temperature control valve supply problem Check the proper operation and the connection of
the FB LP water valve
(see 15.4) .
Cooling problem Check the water cooling supply on the pump.
Check that the cooling pipes are not clogged.
Temperature sensor and/or wiring faulty Check the temperature reading on HHR as well as
the connections of the sensor on FB LP TEMP
plug and of the valve on FB VALVES plug
(see
15.4) .
Other problem Contact your service center.
or
LP T° < setpoint T -10°C FB LP water valve problem Check the condition of the solenoid valve dia-
phragm and its operation.
Temperature sensor and/or wiring faulty Check the running and the connection of the sen-
sor on FB LP TEMP plug
(see 15.4) .
Other problem Contact your service center.
PW59/W59/D59 R2 POWER Roots 2 incorrect threshold setting. Check the power threshold setting in menu [SET-
TING][POWER ][R2 POWER].
Roots 2 mechanical problem Check the rotation of the Roots 2 rotors (if possi-
ble).
Other problem Contact your service center.
Incident Cause Remedy