Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 71 / 92

Malfunctions
71
W60/D60 ROOTS 2 T° Incorrect monitoring configuration Check that [DEFINITION] [ROOTS R2 OPTION]
is set on [DESABLED].
Cooling problem Check the water cooling supply on the pump.
Check that the Roots 2 motor is correctly cooled.
Check that the cooling pipes are not clogged.
Sensor or wiring faultly Check the condition of the sensor and its connec-
tion in the motor terminal box.
Other problem Contact your service center.
W62/D62 LOW SPEED R1 Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [R1 INVERTER] is set on [V1000] or
[DISABLED].
Roots 1 mechanical problem Check the rotation of the Roots rotors (if possible).
Other problem Contact your service center.
W63/D63 LOW SPEED R2 Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [R2 INVERTER] is set on [V1000] or
[DISABLED.
Roots 2 mechanical problem Check the rotation of the Roots 2 rotors (if possi-
ble).
Other problem Contact your service center.
W64/D64 HEATER 1 T° Incorrect monitoring configuration Check that [SETTING][HEATER 1 T°] menu is set
on [DISABLED].
Heater 1 problem Check the operation of heater 1.
Other problem Contact your service center.
W65/D65 HEATER 2 T° Incorrect monitoring configuration Check that [SETTING][HEATER 2 T°] menu is set
on [DISABLED].
Heater 2 problem Check the operation of heater 2
Other problem Contact your service center.
W66/D66 HEATER 3 T° Incorrect monitoring configuration Check that [SETTING][HEATER 3 T°] menu is set
on [DISABLED].
Heater 3 problem Check the operation of heater 3.
Other problem Contact your service center.
W68/D68 R1 DRIVE FAULT Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [R1 INVERTER ] is set on [V1000 or
[DISABLED].
Probable mechanical problem on Roots 1 Check the rotation of the Roots 1 rotors or visually
check if there is no mechanical touch (if possible).
Other problem Contact your service center.
W69/D69 FB DRIVE FAULT Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [FB INVERTER ] is set on [V1000] or
[DISABLED].
Probable mechanical problem on FB Check the rotation of the FB shafts and if there is
no mechanical constraint
Free the FB manually
(see 9.4) .
Other problem Contact your service center.
W70/D70 R2 DRIVE FAULT Incorrect monitoring configuration Check that [DEFINITION] [FREQUENCY IN-
VERTER] [R2 INVERTER] is set on [V1000] or
[DISABLED].
Other problem Contact your service center.
D71 FB I DRIVE FB frequency inverter overcurrent Check the rotation of FB, Roots 1 or Roots 2 ac-
cording to the displayed message.
Check that the frequency inverter is not overload-
ed or if the pump is not mechanically blocked.
Check the message on frequency inverter display,
or if the frequency inverter is in default (V1000
Yaskawa operating manual is available on the
website).
W72 R2 I R1 DRIVE Roots 1 frequency inverter overcurrent
W73 R2 I R2 DRIVE Roots 2 frequency inverter overcurrent
D74 FB U+ DRIVE FB frequency inverter overvoltage
W75 R2 U+ R1 DRIVE Roots 1 frequency inverter overvoltage
W76 R2 U+ R2 DRIVE Roots 2 frequency inverter overvoltage
D77 FB P DRIVE FB frequency inverter overload
W78 P R1 DRIVE Roots 1 frequency inverter overload
W79 P R2 v DRIVE Roots 2 frequency inverter overload
D80 FB T DRIVE FB frequency inverter overheat Check the proper operation of the water circuit.
Check that the cooling plate(s) on frequency in-
verter(s) is not clogged.
W81 R1 T DRIVE Roots 1 frequency inverter overheat
W82 R2 P DRIVE Roots 2 frequency inverter overheat
D83 FB M DRIVE FB motor frequency inverter overload Check the rotation of FB, Roots 1 or Roots 2 ac-
cording to the displayed message
Check that the frequency inverter is not overload-
ed or if the pump is not mechanically blocked.
W84 R1 M DRIVE Roots 1 motor frequency inverter overload
W85 R2 M DRIVE Roots 2 motor frequency inverter overload
D86 FB U- DRIVE FB frequency inverter undervoltage Check the stability of the customer’s electrical net-
work
W87 R1 U- DRIVE Roots 1 frequency inverter overcurrent
W88 R2 U- DRIVE Roots 2 frequency inverter overcurrent
Incident Cause Remedy