Replacing the Oil Filter
Make sure that the entire used oil is drained.
Remove the oil filter (100)
Apply a drop of fresh oil on the sealing ring of the new oil filter (100).
Mount the new oil filter (100) and tighten it by hand.
Dispose of the used oil filter in line with relevant regulations.
Filling in Fresh Oil
Keep oil acc. to the table “Oil” ready.
NOTE
: The amount given in these operating instructions is a guide.
The oil sight glass (83) indicates the actual amount to be filled in.
Make sure that the oil outlet plug (95) is firmly inserted.
Remove the oil fill plug (88).
Fill in Greenco oil.
Make sure that the level is between the MIN and the MAX-markings
of the oil sight glass (83).
Make sure that the sealing ring (89) is inserted into the oil inlet plug
(88) and undamaged, replace if necessary.
Firmly reinsert the oil inlet plug (88) together with the sealing ring
(89).
Exhaust Filter
Check during operation
Greenco recommends the use of a filter pressure gauge (available as
accessory, see “Accessories” in page 21). Without filter pressure gauge the
filter resistance shall be assessed on the basis of the drive motor current
drawn.
Version with filter pressure gauge:
Remove the gas inlet pipe from the inlet joint (260).
Make sure the pump is running.
Check that the indication of the filter pressure gauge is in the green
range.
Reinstall the inlet pipe to the inlet (260).
Version without exhaust filter pressure gauge:
Make sure the vacuum pump is running
Check that the indication of the filter pressure gauge is in the usual
range.
Version with oil return valve (280):
NOTE
: The discharge air will also contain oil if the vacuum pump is
operated without interruption for a too long period (see “Operation Notes” in
page 8).
●
Check that the discharge air is free from oil
Assessment
If the indication of the filter pressure gauge is in the red field or the drive
motor draws too much current and/or the pump flow rate has dropped, then
the exhaust filters (120) are clogged and must be replaced.
NOTE
: Exhaust filters cannot be cleaned successfully. Clogged exhaust
filters must be replaced with new ones.
If the filter pressure gauge indicates a lower pressure than usual, or
the drive motor draws less current than usual, the exhaust filters (120) can
be clogged and must be replaced.
If the discharge air contains oil, the exhaust filters (120) can be clogged or
broken through and, if applicable, must be replaced.
Change of the exhaust filters
Removing the exhaust filters
Make sure that the vacuum pump is shut down and locked against
inadvertent start up.
Prior to disconnecting pipes/lines make sure that the connected
pipes/lines are vented to atmospheric pressure.
Remove the discharge line, if necessary.
Remove the discharge cover (155) from the oil separator (75).
Release the spring elements (125) by unscrewing the screws (126),
but do not remove them.
Press down the filter spring (125) in the slot with special tools and
rotate.
Remove the exhaust filter spring (125) from the oil separator (75).
Take the exhaust filter (120) out of the oil separator (75).
CAUTION
Be ware that the spring (125) of filter may pop out when dismantling
or installing exhaust filter.
Risk of eye injury .
Wear goggles when dismantling or installing spring (125) of
exhaust filter.
WARNIGN
In case the vacuum pump conveyed gas that was contaminated
with foreign materials which are dangerous to health, harmful
material can reside in filters.
Danger to health during inspection, cleaning or replacement of
filters .
Danger to the environment .
Personal protective equipment must be worn during the handling
of contaminated filters.
Contaminated filters are special waste and must be disposed of
separately in compliance with applicable regulations.
CAUTION
Filling oil through the suction connection/gas inlet (260) will
result in breakage of the vanes (22) and destruction of the
vacuum pump.
Oil may be filled through the oil fill port only (88).
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