The
electrical installation
must be checked every 8'000 operating hours
with regards to its good operation and possible damage. This also
includes the vacuum pump controls and equipotential.
NOTE
: These particular maintenance procedures are not necessary if
the pump is not used to draw explosive gases and vapours. However,
they can be scheduled in if the user reckons they are necessary.
CAUTION
Only authorised personnel may carry out any dismantling on the
vacuum pump. Before work begins, the operator of the vacuum
pump must fill in a form or a “Declaration Regarding Contamination
of Vacuum Equipment and Components” that provides information
on possible dangers and appropriate measures.
If this form has not been filled in completely and signed by a
responsible person, the vacuum pump may not be dismantled.
CAUTION
During operation the surface of the vacuum pump may reach
temperatures in excess of 90 °C.
Risk of burns!
Before starting any maintenance work, make sure that the vacuum
pump has been fully switched off and that it cannot accidentally be
switched on again. Follow the shut-down procedure in the section
“Stopping procedure for maintenance”:
l
Stop the vacuum pump
l
Switch off the power supply (the vacuum pump must be fully
disconnected from the power supply)
l
Put up label or warning board “Maintenance in progress” on or
next to the pump
CAUTION
The oil temperature can reach a value of 100°C!
Danger of burns!
l
Make sure that the oil circuit and the cooling liquid circuit have
been drained before moving the vacuum pump
l
Make sure that any cleaning materials used to clean the vacuum
pumps have been disposed of according to local and national
regulations
Before disconnecting the different connections, make sure that the inlet
and exhaust lines of the vacuum pump have been brought to
atmospheric pressure
When the maintenance work has been finished, follow the procedure
“Start-up procedure after maintenance”:
l
Remove the label or warning board “Maintenance in progress”
l
Check the cooling liquid and oil levels according to chapters
“Checking the oil level” and “Checking the cooling liquid level”
l
Connect the pump up to the power supply
l
Make sure that the “Installation Prerequisites” are followed
Maintenance programme
NOTE
: The maintenance intervals depend on the individual operating
conditions. The intervals given below should be considered as initial
guidelines which should be shortened or extended as appropriate. In
particularly heavy duty operation such as high dust loads in the
environment or in the process gas, it can become necessary to shorten
the maintenance intervals significantly.
Weekly:
l
Check the oil level (see “Checking the Oil”)
l
Check the level of the cooling liquid (see “Checking the Cooling
liquid”)
l
Check the vacuum pump for oil leaks - in case of leaks, have the
vacuum pump repaired
l
Check the vacuum pump for cooling liquid leaks - in case of leaks,
have the vacuum pump repaired
Every 4'000 operating hours:
l
Change the gear and bearing oil
Every 8’000 operating hours:
l
Check and clean the inlet filter or screen
l
Check the operating of all sensors fitted to the pump
NOTE:
These particular maintenance procedures are not necessary if
the pump is not used to draw explosive gases and vapours. However,
they can be scheduled in if the user reckons they are necessary.
l
Clean the silencer fitted at the outlet (if available)
l
Change the cooling liquid
Every 24’000 operating hours:
NOTE:
These particular maintenance procedures are not necessary if
the pump is not used to draw explosive gases and vapours. However,
they can be scheduled in if the user reckons they are necessary.
l
Change all parts subject to wear (bearings, shaft seals) (Busch
Service)
Stopping procedure for maintenance
l
Stop the vacuum pump
l
Switch off the power supply (the vacuum pump must be
disconnected from the power supply)
l
Put up label or warning board “Maintenance in progress” on or
next to the pump
Start-up after maintenance
l
Remove label or warning board “Maintenance in progress”
l
Check the cooling liquid and oil levels according to the chapters
“Checking the oil level” and “Checking the cooling liquid level”
l
Connect the pump up to the power supply
l
Make sure that the “Installation Prerequisites” are followed
l
Start the vacuum pump
Checking the oil
Checking the oil level
l
Make sure that the vacuum pump is switched off and cannot
accidentally be switched on again
If the oil level is below the required level:
u
Top up with oil (see “Topping up with oil”)
If the oil level is above the required level:
u
Check the evacuation of the condensates.
u
Change the oil (see “Draining the oil”)
Topping up with oil
NOTE
: Under normal conditions there should be no need to top up
with oil in-between the recommended oil change intervals. A
significant drop in the oil level indicates a malfunction (see
“Troubleshooting”).
CAUTION
Fill in oil only through the oil filler holes.
Maintenance
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