19
ENG
Drop in performance
Inlet filter is dirty
Inlet pipes or machine are leaking
No lubrication
Clean or replace **
Stop leaks
Check oil level and oil condition.
Fill with oil to the right level or change the oil.
Clean the lubricating line carefully (only EM4 - EM4/B)
Anomalous noise
No lubrication
Damaged motor or pump bearings
Damaged vanes
Damaged contact surfaces
See previous point
Replace
Replace
Pump overhaul at our workshop
Oil leak
Worn motor shaft oil seal ring
Ineffective oil recovery system
Ineffective exhaust filter
Replace oil seal ring **
Check and clean the oil recovery line
Replace exhaust filter**
Motor protection is tripping
Blocked exhaust filter
No lubrication
Pump seizure or jam
Broken vane
Replace exhaust filter**
Oil level filling up
Pump overhaul
Replace the vanes
Discharge oil mist
Ineffective exhaust filter
High temperature due to polluted oil
High operating temperature due to the ambient temperature (too high)
Replace exhaust filter**
Oil change
Decrease ambient temperature by allowing a better change of air
TROBULE
CAUSE
SOLUTION
**
See exploded view:
EM4 - EM4/B
on page 30 -
EM8 - EM8/B
on page 32
-
EM12 - EM12/B
on page 34 -
EM20 - EM20/B
on page 36 -
EM28 - EM28/B
on page 38 -
EM40
- EM40/B
on page 40
10. TROUBLESHOOTING
Oil is coming out from discharge
(only EM4 - EM4/B)
Pump operation outside expected pressure limit range
Ineffective oil recovery system
Ineffective exhaust filter
Come back to the expected pressure limit range
Check and clean the oil recovery line
Replace exhaust filter **
