Switch off the vacuum pump
Shut off the nitrogen supply
Shut off the cooling water supply
If the system is equipped with a solenoid gate valve in the cooling
water circuit:
Close the solenoid gate valve
Make sure that the system is currentless
Maintenance
Before starting maintenance work, make sure that the vacuum pump
has been switched off and that it cannot be switched on again
accidentally. Follow the shutdown procedure in the section “Lock
Out / Tag Out procedure”:
–
stop the pump with the LCD control (press on STOP button
during 10s)
–
press on emergency stop button
–
switch off the main circuit breaker
–
switch off the customer’s power supply
–
switch off the water and nitrogen quick connections (inlet first,
then outlet)
–
put the label or warning board “Maintenance processing” on or
next to the pump
CAUTION
The oil temperature can reach a value of 100°C!
Danger of burns!
Make sure that the oil circuit has been emptied before moving the
vacuum pump
Make sure that there are no cleaning tools in the pump anymore
according to local and national regulations
Before pulling off the different connections, make sure that the intake
and exhaust lines of the vacuum pump correspond to atmospheric
pressure
When the maintenance work has been finished, follow the procedure
“Safety Lockout procedure”:
–
take off the label or warning board “Maintenance processing”
–
check the oil level according to the chapter “Checking the oil
level”
–
switch on the main circuit breaker
–
release the emergency stop button
–
switch on the water and nitrogen quick connections (outlet first,
then inlet)
–
make sure that the “Necessary installation instructions” are
followed
–
start the pump with the LCD control (press on START button)
Maintenance program
NOTE
: The maintenance intervals depend a lot on the individual
operating conditions. The intervals given below should be considered
initial guidelines which ought to 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 may become
necessary to shorten the maintenance intervals significantly.
Weekly:
Check the oil level and the colour of the oil (see “Checking the
oil”)
Check the cooling water flow (see “Checking the cooling water”)
Check the nitrogen flow (see “Checking the nitrogen”)
Inspect the vacuum pump for oil leaks - if there are leaks, repair
the vacuum pump (Busch)
Inspect the vacuum pump for leaks of cooling water - if there are
leaks, repair the vacuum pump (Busch)
Monthly:
In the case of operation in a dusty environment:
Make sure that the operating room is clean and free of dust;
clean if necessary
Make sure that the vacuum pump has been switched off and that
it cannot be switched on again accidentally
Check the electrical connections
Carry out a visual inspection of the vacuum pump
Yearly:
Make sure that the vacuum pump has been switched off and that
it cannot be switched on again accidentally
If the intake is equipped with a sieve:
Check the sieve at the intake and clean if necessary
Check the measuring and safety equipment for working order
If the discharge is equipped with a silencer:
Bleed the condensation of the silencer through the purge
system
If the discharge is equipped with a leak-protection non-return valve:
Maintenance
Page 15
BC 0601 G
0870235875
(En)
DANGER
In case the vacuum pump has conveyed gases that have
been contaminated with foreign materials that are
dangerous to health, the oil and condensates will also be
contaminated.
These foreign materials can infiltrate the pores, recesses
and other internal spaces of the vacuum pump.
Danger to health when the vacuum pump is
dismantled. Danger to the environment.
Always wear protective clothing when carrying out
maintenance work.
Before any maintenance work, the inlet and outlet piping as
well as the vacuum pump itself must be flushed with
nitrogen.
CAUTION
Only authorized personnel may carry out dismantling work on the
vacuum pump. Before work begins, the operator of the vacuum
pump must fill in a form or a “Declaration of 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,
the vacuum pump may not be dismantled.
CAUTION
Before maintenance work is started, a safety area of at least
610 [mm] around the machine must be set up.
CAUTION
The surface temperature of the vacuum pump can exceed
50°C when the vacuum pump is in operation.
Danger of burns!
Summary of Contents for COBRA BC 0601 G
Page 22: ...Note ...
Page 23: ...Note ...
