BUSCH COBRA DS 8163 A, Installation And Operating Instructions Manual

Page: 27 / 36

Yearly:
l Make sure that the vacuum system has been switched off and that
it cannot be switched on again accidentally
If the intake is equipped with a sieve:
u Check the sieve at the intake and clean if necessary
l
Check the measuring and safety equipment for working order
If the discharge is equipped with a sound absorber:
u Clean the sound absorber
If the discharge is equipped with a leak-protection non-return valve:
u Clean the leak-protection non-return valve
l
Drain the cooling liquid (see "Draining the cooling liquid")
If the cooling water line is equipped with a filter:
u Check the filter and clean or replace if necessary
l Check the seals and replace if necessary
l Check the intake and discharge lines and clean or replace if neces-
sary
Every 16000 hours of operation, at the
latest after 4 years:
l Drain the oil (see "Draining the oil")
l Main inspection of the vacuum system (Busch)
Lock Out/ Tag out procedure
l Stop the vacuum system with the remote control (press on STOP
button during 10s)
l Switch off the main circuit breaker (possibility of installing a lock)
l Press on emergency stop button
l Switch off the customer's power supply
l Switch off the water (inlet first, then outlet) and nitrogen quick
connections
l Put the label or warning board "Maintenance processing" on or
next to the vacuum system
Safety Lockout procedure
l Take off the label or warning board "Maintenance processing"
l Check the cooling liquid and oil levels according to the chapters
"Checking the oil level" and "Checking the cooling liquid level"
l Open the power box cover and check that the thermal relay is on
manual reset position
l Close the cover
l
Release the emergency stop button
l Switch on the main circuit breaker
l Switch on the water (outlet first, then inlet) and nitrogen quick
connections
l Make sure that the "Necessary intallation instructions" are fol-
lowed
l Start the vacuum system with the remote control (press on START
button)
Checking the oil
Checking the oil level
l Make sure that the vacuum pump has been switched off and that
it cannot be switched on again accidentally
l Indication of the oil level on the various oil sight glasses
COBRA NS (DP) vacuum pump
If the oil level does not reach the target circle:
u
Top up with oil (see “Refilling oil”)
If the oil level exceeds the target circle:
u Check the condensate drain
l Drain the oil (see “Draining the oil”)
WY (MB) rotary lobes vacuum pump
If the oil level does not reach the target circle:
u Top up with oil (see “Refilling oil”)
If the oil level exceeds the target circle:
u Check the condensate drain
l Drain the oil (see “Draining the oil”)
Filling in new oil
COBRA NS (DP) vacuum pump
l Prepare the quantity of oil needed (see "Oil type/ quantity")
WARNING
The use of chemically contaminated or polluted oil can lead to
hazardous pump conditions which could cause personal injury.
NOTE : The quantity of oil specified in the installation handbook is of
informative nature only. Check the oil level with the help of the various
oil sight glasses (OSG 1, OSG 2) on the vacuum system.
l Make sure that the drain plugs have been fitted properly and that
they do not leak
CAUTION
Only fill in oil through the oil filler openning.
l Unscrew the oil filler cap (OFP)
l Fill in oil in to the target circle of the oil sight glasses
Oil level, pump not operating
l Make sure that the oil level is in the target circle of the oil sight
glasses
l Make sure that the seals of the filler cap are not damaged and that
they sit properly. Replace if necessary.
l Screw on the filler cap again
COBRA DS 8163 A
Checking the oil
0870772605
Page 27
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