8 | Maintenance
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0870S03226_VRD 2072-3108_-
8 Maintenance
Hazard from running vacuum pump!
There is a severe threat for life and limb depending on the repair and maintenance
work to be carried out if the vacuum pump is running.
Only carry out any repair or maintenance work if:
• the vacuum pump is not running
• the vacuum pump is disconnected from the electrical supply and secured against unin-
tentional start-up
• vacuum system is not under pressure!
• hot surfaces are cooling down!
• Cooling water supply is interrupted (only version with oil/water heat exchanger)
Disconnect the vacuum system from the process and make sure that there is ambient
pressure in the vacuum system! Procedure: Close inlet side shut-off devices (not included
in the scope of delivery) and open
vent valves slowly (not included in the scope of delivery).
Danger from vacuum pump contaminated with hazardous material!
There is a danger of poisoning!
• Ventilate the vacuum pumps before they are maintained
8.1 Maintenance plan
The maintenance intervals strongly depend on the individual operating conditions. The
intervals specified below are to be considered reference values and should be individually
shortened or extended. Especially at high stress, e.g. in case of high dust load in the envi-
ronment or the process gas, or in case of other contamination or ingression of process
material, it may be necessary to shorten the maintenance intervals a lot.
Interval Maintenance task
Rotary vane vacuum pump R5 RD
daily
• Check the oil level, see chap.
8.2
Monthly
Check the vacuum pump for escaping oil. Have the
vacuum pump repaired by Busch if there are any
leaks.
Normal use: after max.
4,000 operating hours or
after one year at the latest
Highly demanding pur-
pose: after max.
2,000 operating hours or
after no more than half a
year
Clean the vacuum pump and the air heat exchanger
from dust and impurities.
• Clean the filter of the gas ballast valve (GB, fig. 2)
• Replace the oil*, the oil filter* (OF, fig. 2, chap. 8.3)
and exhaust filters (EF, fig. 2, chap. 8.4).
*Maintenance interval for synthetic oil. Shorten the
maintenance interval if mineral oil is used. Contact
Every 5 years
Perform a general overhaul of the vacuum pump
(inform Busch).
Switch and control cabinet
Every 8000 hrs. or, at the
latest, after 1 year
• Check switch function, check for broken wires.
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