Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 69 / 92

Malfunctions
69
or
HP T° < setpoint T -10°C HP FB water valve problem Check the condition of the solenoid valve dia-
phragm and its operation.
Temperature sensor problem Check the proper operation and the connection of
the sensor on FB HP TEMP plug
(see 15.4) .
Other problem Contact your service center.
W17/D17 T° R1 MOT Roots 1 motor temperature is > 120°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 or wiring faulty Check the connection of the sensor on
RSV1 MOTOR plug
(see 15.4) and in the motor
terminal box.
Problem on Roots 1 motor temperature sensors Check the proper operation of Roots 1 motor tem-
perature sensors (NC contacts).
Other problem Contact your service center.
D19 REVERSED UVW Main power supply problem: two inverted phases Check the wiring at the main power input connec-
tor.
Other problem Contact your service center.
W21 SOFT P. VALVE Incorrect monitoring configuration Check that [DEFINITION] [INLET VALVE] is set on
[DESABLED] when no valve is connected.
Wrong connection Check the valve connection on the J4 connector
(see 8.5.3) .
Malfunction Check the proper operation opening/closing of the
valve.
Other problem Contact your service center.
W31 SUPPLY 15V 15V supply problem Contact your service center.
W32 MAINTENANCE Incorrect monitoring configuration Check the maintenance thresholds.
The maintenance threshold is reached Contact your service center for pump overhaul.
D33 SUPPLY 24VS 24V supply problem Check that the EMS is not switched on.
Check the EMS wiring circuit.
Check the 24 V power supply and the 24 V
PCboard.
D34 EMO Pump emergency stop is engaged Rotate to unlock the emergency stop on the front
panel display.
Emergency cover plug is missing Check that the cover plug is fitted on the emergen-
cy connector at the rear of the pump.
Problem with 24 V power supply Check the EMO power circuit.
Other problem Contact your service center.
D36 FB CONTACTOR Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [FB INVERTER] is set on [DISABLED].
KM1 contactor not closed Check that there is a strap between pins 2 and 3
of emergengy stop terminal
EMS (see 8.7.1) .
The FB does not start: check the 24 V power sup-
ply on A1 and A2.
Other problem Contact your service center.
D37 R1 BREAKER Incorrect monitoring configuration Check that the [DEFINITION] [PUMP MODEL] is
set on [A204] or [A124].
Change the setting by sending an order via Mod-
bus communication protocole
(see Serial link op-
erating instructions).
RT2 (Roots) breaker switched off Check RT2 setting (see 15.3) . Switch RT2 on.
Check that the presence of current and voltage on
the phases.
Roots 1 mechanical problem Check the rotation of the Roots 1 rotors (if possi-
ble).
Other problem Contact your service center.
D38 FB BREAKER Incorrect monitoring configuration Check that the [DEFINITION] [FREQUENCY IN-
VERTER][R1 INVERTER] is set on [DESABLED].
RT1 (BF) breaker switched off Check RT1 (see 15.3) . Switch RT1 on.
Check that the presence of current and voltage on
the phases.
FB mechanical problem Free the FB manually (see 9.4) .
Other problem Contact your service center.
D39 R1 CONTACTOR Incorrect monitoring configuration Check that the [DEFINITION] [FREQUENCY IN-
VERTER][R1 INVERTER] is set on [DESABLED].
KM2 (Roots) contactor not closed The Roots 1 does not start: check the 24 V power
supply on A1 and A2.
Other problem Contact your service center.
Incident Cause Remedy