vacuubrand ME 4C VARIO select, Инструкция по эксплуатации

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page 56 of 76
Fault Possible cause Remedy
❑
No display.
➨
VACUU•BUS plug-in
connection or cables
defective or not con-
nected.
✔
Check VACUU•BUS plug-
in connection and cables
to the controller.
➨
Controller switched off.
✔
Switch on controller.
➨
Controller defective.
✔
Contact local distributor.
❑
Loud operating
noises.
➨
Loud outlet noise, out-
let line open.
✔
Check connections at out-
let. Connect hose or si-
lencer to pump outlet. Be
careful not to cause outlet
overpressure, especially
with condensable vapors.
➨ Diaphragm crack or
diaphragm clamping
disc loose?
✔ Perform maintenance and
replace defective parts.
➨
Ball bearing defective,
or other than above
mentioned causes?
✔
Contact local distributor.
❑ Pump stops and
does not start
again.
➨ The preset motor
speed is too low for the
motor type and the ap-
plication configuration?
✔ Set a motor speed > 15 %
at the controller.
➨
The setting of the mo-
tor speed at the con-
troller is too low, e. g.,
“Pump Down“ with a
motor speed of 5 %?
➨ The control operates
the motor with a too
low speed?
❑
Pump seized.
✔
Contact local distributor.
➨ A service manual with exploded view drawings, spare parts list and
directions for repair is available on request.
☞
The service manual is intended for trained service people only.