6. SERVICING
6.1 General information
Before every maintenance operation:
• Ensure the pump insulation from the electric energy so that the pump can’t start
automatically.
• Make sure the pump has reached a non-dangerous temperature.
• Introduce air in the inlet circuit.
In order to keep the pump operating at a high efficiency level, follow all periodical
service points listed in the table below. However, more frequent service operations
may be necessary depending on what the pump is used for (suction of condensable
vapours, suction of powders or polluting substances). For such cases, only direct
experience can indicate the correct service frequency needed. The exhausted oil and
the replaced spare parts must be considered as special waste products and handled
according to the local regulations in the Country of use.
16
ENG
Check oil level before starting.
24
Hours/ Every day
Operator
DESCRIPTION OF THE OPERATION
SERVICING FREQUENCY
AUTHORIZED PERSONNEL
Clean the external element with compressed air. If necessary, replace it.**
Clean with a blast of air the cooling surfaces of the pump and of the electric motor.
100
Hours / Every week
Operator
Operator
Change the lubricating oil.
If the pressure gauge is fitted on the pump, check the exhaust filter (max 0.5 bar). If necessary, replace it.
(EM4 - EM4/B excluded)
Clean with a blast of air the silencer and the filtering mesh.**( EM4 - EM4/B excluded)
Clean the lubrication and oil recovery circuits carefully.
500/1000*
Hours/every 6 months
Skilled worker
Skilled worker
Skilled worker
Skilled worker
Replace the exhaust filter.**
Check the electrical connection.
2000
Hours/every year
Skilled worker
Skilled worker
Pump overhaul.
30000
Hours/every 5 years
Customer Service
Skilled worker
* The first oil change has to be done after 500 hours of operation. If any polluting substances are found in the oil, next oil change could take place within 1000 hours.
**
EM4 - EM4/B
see exploded view on page 30 -
EM8 - EM8/B
see exploded view on page 32 -
EM12 - EM12/B
see exploded view on page 34
EM20 - EM20/B
see exploded view on page 36 -
EM28 - EM28/B
see exploded view on page 38 -
EM40 - EM40/B
see exploded view on page 40
