Instructions for Use
MS120 Single Stage Rotary Vane Pumps User Manual / 87-900-150-01(B) 164/198
Troubleshooting
Tab. 8 Troubleshooting
TROUBLE CAUSE REMEDY
Drop in perfomances
Inlet pipes or machine are leaking Identify leaking point and
seal it
No lubrication Check oil level and oil
conditions. Fill with oil to the
right oil level or change the
oil
Supply Voltage too low (< 200 Vac) Connect the pump to a
mains with the correct
voltage and use a cable with
the appropriate size (see
Operating limits table)
Anomalous noise
No lubrication See previous point
Coupling element worn Replace
Motor bearings damaged Replace
Pump Bushing damaged Pump overhaul (Customer
Service)
Damaged vanes Pump overhaul (Customer
Service)
Damaged contact surfaces Pump overhaul (Customer
Service)
Oil leak
Shaft oil seal rings worn Pump overhaul (Customer
Service)
Oil filling/discharge plugs are leaking Check the plug has been
closed / replace the gasket
Inefficient oil recovery system Pump overhaul (Customer
Service)
Motor protection is
tripping
Blocked exhaust filters Replace exhaust filters
No lubrication Oil level filling up
Pump seizure and jam Pump overhaul (Customer
Service)
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