BUSCH WY 4500 C, Installation And Operating Instructions Manual

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l Make sure that the oil level at the gears and bearings is in the
target circle of the oil sight glasses
Dispose of the used oil in compliance with applicable environmental
protection regulations.
NOTE: Under normal conditions, there should be no need to top up
with oil during the recommended oil change intervals. A significant
level drop indicates a malfunction (see “Troubleshooting”).
CAUTION
Make sure that the vacuum pump is switched off and cannot
accidentally be switched on again
Please fill in the oil after removing the oil filler plugs on the cylinder
covers.
l Remove oil filler plugs (OFP, 250/ 260)
l
Top up with oil until the oil level is in the target circle of the oil
sight glasses
l Make sure that the oil level at the gears and bearings is in the
target circle of the oil sight glasses
l Refit the oil filler plugs (OFP, 250/ 260)
l
Make sure that the oil filler plugs have been correctly fitted after
filling in the oil, so that no air can enter the pump. Too high an oil
level must be avoided as well as this could lead to overheating of
the gears
Checking the colour of the oil
NOTE : The oil should have a light colour and can be transparent, a
little foamy or a little clouded. A milky discolouration that does not
vanish after the oil has been left to rest indicates contamination with
foreign material. Darkly coloured oil has either been contaminated with
foreign material or burnt and must be changed (see “Oil Change”).
WARNING
Dark coloured oil may indicate a hazardous pump condition which
could cause personal injury.
If dark oil similar to the example shown is observed, you have to
contact the Busch Customer service without delay.
Life span of the oil at the gears and the
bearings
The oil life depends very much on the operating conditions. A clean
and dry air stream and operating temperatures below 100°C are ideal.
Under these conditions the oil and the oil filter must be changed every
5000 operating hours, latest after 6 months.
Under very unfavourable operating conditions the oil life can be less
than 500 operating hours. Extremely short life times indicate
malfunctions (see “Troubleshooting”) or unsuitable operating
conditions.
If there is no experience available regarding the oil life under the
prevailing operation conditions, it is recommended to have an oil
analysis carried out every 500 operating hours and establish the oil
change interval accordingly thereafter.
Oil Change
WARNING
Draining used oil from the gears and the
bearings
NOTE : After switching off the vacuum pump at normal operating
temperature, wait no more than 20 minutes before draining the oil.
l Make sure that the vacuum pump and the primary pump are
switched off and cannot accidentally be switched on again
l Make sure that the vacuum pump is vented to atmospheric
pressure
l
Put a drain tray underneath the oil drain plugs (ODP, 252/ 262 or
610)
l Remove the oil drain plugs (ODP, 252/ 262 or 610)
l Drain the oil
When the oil flow has stopped:
Make sure that all the used oil is drained
l
Carefully unscrew and take off the magnetic plugs (MP 1, 590,
MP 2, 592)
l
Check that no metal swarf sticks to the magnet of the drain plug,
clean or change it if necessary
l Make sure that the seals of the oil drain plugs are not damaged
and fits correctly. Replace seal if damaged
l Refit the oil drain plugs (ODP, 252/ 262 or 610)
l
Make sure that the seals of the oil drain plugs are not damaged
and fits correctly. Replace seal if damaged
l Refit the magnetic plugs
l Dispose of the used oil in compliance with applicable regulations
CAUTION
Because the ends of the drain plugs are magnetic, metal swarf can
stick to them. Always clean away this swarf when removing the
drain plugs.
Because of wear and tear of the seals, it is recommended to replace
the drain plugs whenever the oil is changed.
Checking the magnetic plug from the rear
lubrication circuit of the motor bearing
CAUTION
Never unscrew and remove the magnetic plug (MP 3, 536) when
the vacuum pump is operating.
l Make sure that the vacuum pump and the primary pump are
switched off and cannot accidentally be switched on again
l Make sure that the vacuum pump has been vented to atmospheric
pressure
l Make sure that all the oil has been drained
Maintenance
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