___________________________________________________________________________
GP+GP – Maintenance book Pag.
14 of 43
C.1 Maintenance schedule
The maintenance schedule stated in the maintenance sheet underneath are approximate values for a
normal function of the group. Difficult environmental conditions and/or aggressive gases can
increase significally the maintenance interventions.
CHECK AND MAINTENANCE
FREQUENCY
Oil level check
Daily
Oil conditions check
Depending upon process
First oil change
After 100 : 150 running hours
Subsequent oil change
Refer to C.3 paragraph
Oil filter replacement
Every oil change
Replacement of oil remover cartridge/s
In case of oil mist in exhaust or yearly
Net cleaning
Monthly
Check of anti-suckback valve
Every 6 months
Oil cooler cleaning
Yearly ( just for models from 45 to 300 )
Replacement of filter – gasballast
Every 6 months or according to final application
Replacement od vanes and gaslets
Every 2 years or when there are efficency
trouble
C. 2.1 Oil level
The pumps oil casing has two oil sight glasses.:
-
at the bottom, where the oil must never go below
-
at the top, for normal check of oil status
The oil status must always be in the middle of the oil sight glass.
If the pump has an oillevelswitch installed on it, fit for showing oil gauge, the oil level must cover
completly upper sight glass. The test must be carried out when pump is stopped
Greater oil consumption shows that the exhaust elements are clogged.The oil level must be checked
over once a day as stated in chart. When oil level in each pump is under emergency, a lamp will
light on the electric panel board by the oil level switch. Then, fill up the oil in the pump.
C. 2.2 Oil condition
Under normal conditions, oil looks transparent. If it gets black, must be changed.
Final pressure is compromized, if gases or liquids are mixed into the oil
It is possible to de-gas the oil by running the pump for about 30 mins. With closed suction and
gasballast valve opened (option).
