17
05
Maintenance
Manual 1807 Rev B p/n 001807 0000
* Pressure rises due to internal causes such as contamination
by high vapor pressure materials outgassing from associated
equipment work, and leaking from trapped volumes of air.
System not
Operating
Pressure not
Attainable
Associated
Process
Equipment
Vacuum
Pump
Virtual Leaks*
Leaks
Operator Error
Contamination
Leaks
Malfunctions
Figure 5-2 – Common Faults in Vacuum Systems
STALLING
If the pump stalls at any time, it may be due to a
loose belt, lack of lubrication, or foreign matter in
the pump. If the pump cannot be turned over by
hand after it has cooled down, clean the pump.
See Disassembly on page 24 for pump
cleaning and inspection.
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