Troubleshooting – Labconco VACUUBRAND HYBRID Rotary Vane Pump 7584000 User Manual
Page 38
Troubleshooting
Fault
Possible cause
Remedy
❑ Pump does not
start.
➨ Electrical power cord
not plugged in, electri-
cal supply failure?
✔ Plug in power cord.
Check fuse.
➨ Supply voltage does
not correspond with
the pump (see rating
plate)?
✔ Connect pump to a suit-
able supply voltage.
➨ Start-up control defec-
tive?
✔ Contact local distributor.
➨ Oil temperature below
54°F (12°C)?
✔ Operate the pump in suit-
able ambient conditions.
➨ Pump unit of rotary
vane pump contami-
nated?
✔ Perform maintenance or
clean the pump unit.
➨ Motor thermally over-
loaded?
✔ Allow motor to cool down
(< 50°C (122°F)), iden-
tify and eliminate cause
of failure. Manual reset
is necessary. Switch off
pump or unplug. Provide
sufficient ventilation.
➨ Overpressure in outlet
line?
✔ Remove blockage in line,
open valve.
➨ Oil mist filter clogged
(filter element in con-
tact with oil) or over-
filled?
✔ Drain oil, replace filter
element if necessary.
➨ Pump seized?
✔ See below.
❑ Pump does not
achieve its ultimate
vacuum or usual
pumping speed.
➨ Measuring procedure
or vacuum gauge not
suitable for the applica-
tion?
✔ Choose a suitable mea-
suring procedure or vacu-
um gauge.
➨ Inlet blocked?
✔ Open inlet. Ensure that
the inlet line does not be-
come blocked.
➨ Centring ring at small
flange connection not
correctly positioned?
✔ Check small flange con-
nections.
➨ Long, narrow vacuum
line?
✔ Use lines with larger di-
ameter, length as short as
possible.