vacuum pump repaired (GREENCO service).
Monthly:
Make sure that the vacuum pump is shut down and locked against
inadvertent start up.
Check the function of the exhaust filters (120) (see “Exhaust Filters” in
Page 11).
In case an inlet air filter is installed:
Check the inlet air filter (261), or replace the filter when necessary.
In case of operation in a dusty environment:
Follow the requirements in Every 6 Months in page 9.
Every 6 Months:
Make sure that the vacuum pump is shut down and locked
against inadvertent start up.
Make sure that the housing is free from dust and dirt, clean if necessary.
Clean the fan cowlings, fan wheels, ventilation protection screen and
cooling fins.
Yearly:
Make sure that the vacuum pump is shut down and locked against
inadvertent start up.
Replace
the exhaust filters (120) (see “Exhaust filters” in page 11).
In case an inlet filter is installed
：
◆
Replace the inlet air filter cartridge
Check the inlet air filter (261), or clean the filter when necessary.
In case a gas ballast (440) with sintered metal filter is installed:
◆
Clean with compressed air or replace the sintered metal filter.
In case a gas ballast (440) with paper filter is installed:
◆
Replace the paper filter cartridge.
Every 500 - 2000 Operating hours:
（
see “Oil Life” in page
9
）
●
Change the oil, replace the oil filter(s) (100) and clean the float valve
(194) (see “Oil and Oil Filter Change” in page 10).
If the vacuum pump is equipped with float valve (200) and oil return pipe:
Check the float valve (2000) (See Check float valve in page 10).
Checking the oil
Checking the level
Make sure that the oil has collected at the bottom of the oil separator
(75)
Read the level on the sight glass (83)
In case the level has dropped underneath the MIN-marking:
◆
Top up oil (see “Topping up Oil” in page 9)
In case the level exceeds the MAX-marking:
◆
Check the dilution with condensates. Replace the vacuum pump oil
and check process;
◆
Replace gas ballast when necessary (carried out by GREENCO), and
follow the requirements in Conveying Condensable Steams in page 8.
If the gas ballast is used appropriately, the oil level exceeds MAX
marking:
Clean with compressed air or replace the sintered metal filter (applicable to
1RV0020-1RV0040).
Replace filter cartridge (1RV0063 and 1RV0100).
Topping up Oil
NOTE
: Under normal conditions there should be no need to top up oil during
the recommended oil change intervals. A significant level drop indicates a
malfunction (see “Troubleshooting” in page 13).
NOTE
: During operation the exhaust filter gets saturated with oil. It is
therefore normal that the oil level will drop slightly after replacement of the
exhaust filter.
Make sure that the vacuum pump is shut down and locked
against inadvertent start up. Remove the oil fill plug (88).
Top up oil until the level reaches the middle of the oil sight glass (83).
Add the special oil of Greenco and make sure that the level is in the
middle of the oil sight glass (83).
Make sure that the sealing seat (89) on the oil fill plug (88) is
undamaged, if necessary replace the oil fill plug.
Firmly reinsert the oil fill plug (88) with its sealing seat (89).
Checking the Colour of the Oil
NOTE
: The oil should be light, either transparent, a little foamy or a little
tarnished. A milky discolouration that does not vanish after sedation of the
oil indicates contamination with foreign material. Oil that is either
contaminated with foreign material or burnt must be changed (see “Oil
Change” in page 10).
If the gas ballast is installed and applied properly, the oil is still contaminated
by water or other condensed matters:
◆
Replace filter cartridge.
◆
Clean with compressed air or replace sintered metal filter.
Oil Life
The oil life depends very much on the operating conditions. A clean and dry
air stream and operating temperatures below 100 are ideal. Under these
℃
conditions the oil and the oil filter (100) shall be changed every 500-2000
operating hours or after half a year.
Under very unfavourable operating conditions the oil life can be less than
500 operating hours. Extremely short life times indicate malfunctions (see
“Troubleshooting” in page 13) or unsuitable operating conditions, though.
Choose synthetic oil over mineral oil for a longer oil life. Contact Greenco to
select the suitable oil for your process.
CAUTION
During operation the oil separator is filled with hot, pressurised
oil mist.
Risk of injury from hot oil mist with open oil inlet plug .
Remove the oil inlet port (88) only the vacuum pump is stopped.
The vacuum pump must only be operated with the oil fill plug (88
firmly inserted.
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).
