Every 16 000 hours of operation, at the latest
after 4 years:
Drain the oil (see “Draining the oil”)
A main inspection of the vacuum pump (Busch)
Lock Out/ Tag Out procedure
Stop the pump with the remote control (press on STOP button
during 10s)
Press on emergency stop button
Switch off the main disconnect switch
Switch off the customer’s power supply
Switch off the water (inlet first, then outlet) and nitrogen quick
connections
Put the label or warning board “Maintenance processing” on or
next to the pump
Safety Lockout procedure
Take off the label or warning board “Maintenance processing”
Check the cooling liquid and oil levels according to the chapters
“Checking the oil level” and “Checking the cooling liquid level”
Open the power box cover and check that the FDP1 thermal relay
is on manual reset position
Close the cover
Switch on the main disconnect switch
Release the emergency stop button
Switch on the water (outlet first, then inlet) and nitrogen quick
connections
Make sure that the “Necessary installation instructions” are
followed
Start the pump with the remote control (press on START button)
Checking the oil
Checking the oil level
Make sure that the vacuum pump has been switched off and that
it cannot be switched on again accidentally
Indication of the oil level on the various oil sight glasses
Oil level, pump not operating
COBRA NS(DP) vacuumpump
If the oil level lies below the target circle:
Top up with oil (see “Refilling oil”)
If the oil level exceeds the target circle:
Check the condensate drain
Drain the oil (see “Draining the oil”)
WY (MB) rotary lobes vacuumpump
If the oil level does not reach the target circle:
Top up with oil (see “Refilling oil”)
If the oil level exceeds the target circle:
Check the condensate drain
Drain the oil (see “Draining the oil”)
Refilling oil
NOTE
: Oil does not normally have to be refilled outside the recom-
mended oil change intervals. A drop in the oil level indicates a fault
(see “Troubleshooting”).
Make sure that the vacuum pump has been switched off and that
it cannot be switched on again accidentally
Unscrew the oil filler plugs of the DP and MB vacuum pumps (if
necessary)
COBRA NS (DP) vacuump pump
Fill in oil up to the top of the target circle of the oil sight glasses
Make sure that the oil level is in the top of target circle of the oil
sight glasses
Make sure that the seals of the filler cap are not damaged and that
they sit properly. Replace them if necessary
Screw on the filler cap again
WY (MB) rotary lobes vacuum pump
Fill in oil up to the top of the target circle of the oil sight glasses
Make sure that the oil level lies in the target circle of the oil sight
glasses
Make sure that the seals of the filler cap are not damaged and that
they sit properly. Replace them if necessary
Screw on the filler cap again
Maintenance
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DS 8161 F
0870235853
(En)
MAX
MIN
MAX
MIN
MAX
MIN
CAUTION
Only fill in oil through the oil filler plugs.
CAUTION
Danger of burns when the oil filler plugs are open.
Danger of injuries when the oil filler cap is not screwed on properly.
Only unscrew the oil filler cap when the vacuum pump has
been switched off.
The vacuum pump may only be switched on when the oil filler
cap is properly closed and tight.
Summary of Contents for COMBI COBRA DP 600 C
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