Troubleshooting – VACUUBRAND PC 3001 basic User Manual
Page 15
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999198 / 29/09/2009
Troubleshooting
Fault
Possible cause
Remedy
❑ Pump does not start or
stops immediately.
➨ Knob for motor speed is
turned to the left stop?
✔ Turn the knob to the right.
➨ Supply voltage is missing or
too low?
✔ Check or connect the supply
voltage; check the mains
fuse.
➨ Overpressure in the exhaust
line?
✔ Open exhaust line, ensure a
free (pressureless) outlet line
➨ Motor overloaded?
✔ Allow motor to cool. Identify
and eliminate the cause of
failure.
➨ VACUU•BUS fuse has been
triggered, e.g. load in the
VACUU•BUS system too high
or short circuit in valves?
✔ Remove VACUU•BUS com-
ponents (e.g. valves). The
fuse is self-resetting.
❑ Pump does not achieve
ultimate vacuum or nor-
mal pumping speed.
➨ Centring ring at a small flange
connection not correctly posi-
tioned or leak in the pipeline
or vacuum system?
✔ Check pump directly - con-
nect vacuum gauge directly
at pump inlet - then check
connection, pipeline and
vacuum system if necessary.
➨ Long, narrow vacuum line?
✔ Use lines with larger dia-
meter, length as short as
possible.
➨ Pump has been exposed to
condensate?
✔ Allow pump to run for some
minutes with atmospheric
pressure at the inlet.
➨ Deposits have been formed
inside the pump?
✔ Clean and inspect the pump
heads.
➨ Diaphragms or valves defec-
tive?
✔ Replace diaphragms and/or
valves.
➨ Outgassing substances or
vapour generated in the pro-
cess?
✔ Check process parameters.
➨ Pump temperature too high
(reduced motor speed)?
✔ Ensure sufficient cooling
of the pump or reduce inlet
pressure.
❑ Pump too noisy.
➨ Loud exhaust noise?
✔ Connect hose or silencer to
pump outlet.
➨ Diaphragm crack or dia-
phragm clamping disc loose?
✔ Perform maintenance.
➨ Other than above mentioned
causes?
✔ Contact local distributor.
❑ Pump seized.
✔ Contact local distributor.