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7| Maintenance
7.1
Preparation
7.2
Work to be carried out
In order to guarantee optimum operational reliability and service life of the compressor, we recom-
mend carrying out servicing and inspection work at regular intervals:
Oil change:
-
not mandatory for factory-produced series systems.
-
for field installations or when operating near the application limit: for the first time after 100
to 200 operating hours, then approx. every 3 years or 10,000 - 12,000 operating hours.
Dispose of used oil according to the regulations; observe national regulations.
US
Annual checks: Oil level, leak tightness, running noises, pressures, temperatures, function of aux-
iliary devices such as oil sump heater, pressure switch.
7.3
Spare parts recommendation/accessories
Available spare parts and accessories can be found on our compressor selection tool under
vap.bock.de as well as at bockshop.bock.de.
Only use genuine Bock spare parts!
7.4
Lubricants / oils
The oil type filled as standard in the factory is marked on the name plate, and this should always be
used, even in the case of maintenance units. Alternative oil types can vary significantly in quality
due to additives or inferior raw materials by the manufacturer. Validation within the compressors entire
operating limits can not be guaranteed, if such alternative oil types are used. It is for this reason,
that we only recommend the use of oil from Bock! Bock assumes no liability for any damage arising
from alternative oil types.
Bock standard oil type: BOCK lub E55
7.5
Decommissioning
Close the shut-off valves on the compressor. Drain the refrigerant (it must not be discharged into the
environment) and dispose of it according to the regulations. When the compressor is depressurized,
undo the fastening screws of the shut-off valves. Remove the compressor using an appropriate hoist.
Dispose of the oil inside in accordance with the applicable national regulations.
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Before starting any work on the compressor:
Switch off the compressor and secure it to prevent a restart.
Relieve compressor of system pressure.
Prevent air from infiltrating the system!
After maintenance has been performed:
Connect safety switch.
Evacuate compressor.
Release switch lock.
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