Checking the leak-protection
non-return valve (accessory)
l
Check the leak-protection non-return valve regularly and clean it if
necessary
CAUTION
Wear protective clothing when carrying out maintenance work on
the sound absorber and leak-protection non-return valve.
There could still be residues of contamination.
Overhaul
CAUTION
Inappropiate maintenance work on the vacuum pump can damage
the pump.
Danger of explosion!
If requirements are not met, the vacuum pump may not be switched
on!
Should work exceed the dismantling work described in this
handbook, it may only be carried out by authorised persons.
DANGER
If the vacuum pump has pumped gases that were contaminated
with foreign bodies that are hazardous to health, the oil and
condensate are also contaminated with these foreign bodies.
These foreign bodies can penetrate into pores, openings and other
internal parts of the vacuum pump.
There is a health hazard when dismantling the vacuum pump.
There is also a danger to the environment.
Prior to shipping, the vacuum pump must imperatively be deconta-
minated and the degree of contamination must be documented in a
declaration of decontamination ("Declaration of Decontamination"),
which can be downloaded from www.buschvacuum.com.
Busch service will only accept vacuum pumps that come with a
completely filled in and legally binding signed form.
Removal from service
Temporary removal from service
Before disconnecting the intake and exhaust lines and switching off the
cooling water and nitrogen lines, make sure that the lines have been
adjusted to atmospheric pressure
Recommissioning
CAUTION
If the vacuum pump was switched off for a longer period of time,
the rotors of the COBRA NS vacuum pump can be jammed.
Turn the scroll rotors by hand.
l
Make sure that the various protective elements, stoppers or adhe-
sive tapes have been removed
l
Switch on the vacuum pump by following the procedure described
in the chapter “Installation and start-up”
Dismantling and disposal
DANGER
If the vacuum pump has pumped gases that were contaminated
with foreign bodies that are hazardous to health, the oil and
condensate are also contaminated with these foreign bodies.
These foreign bodies can penetrate into pores, openings and other
internal parts of the vacuum pump.
There is a health hazard when dismantling the vacuum pump.
There is also a danger to the environment.
Protective clothing must be worn when dismantling the vacuum
pump.
Prior to shipping, the vacuum pump must imperatively be deconta-
minated and the degree of contamination must be documented in a
declaration of decontamination ("Declaration of Decontamination"),
which can be downloaded from www.buschvacuum.com.
Dispose of the used oil and condensate according to applicable
environmental protection regulations.
When the product has reached the end of its lifetime:
–
decontaminate the vacuum pump
CAUTION
Dismantling work must be carried out by authorised personnel.
Before work begins, the operator of the vacuum pump must fill in a
form or a “Declaration of Decontamination” 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.
–
drain the oil
u
dispose of the oil according to local environmental protection
regulations
–
drain the cooling liquid
u
dispose of the cooling liquid according to local environmental
protection regulations
–
begin dismantling the vacuum pump
CAUTION
Wear protective clothing when carrying out dismantling work.
u
dispose of the vacuum pump as scrap metal
–
dispose of the individual parts of the machine according to local re-
gulations
A lithium battery is present inside the PLC:
–
eliminate the lithium battery according to local and national regu-
lations in place, relating to environment
Overhaul
DS 0080-2000 G
Page 22
0870772712 (En)
