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6| Maintenance
6.4 Recommended spare parts/accessories
Maintenance set for oil change
• BOCK lub E55 2 x 1 l
• Oil drain screw with seal
Maintenance set for shaft seal
• shaft seal kit
• BOCK lub E55 2 x 1 l
• Oil drain screw with seal
Available spare parts and accessories can be found on our compressor selection tool under
vap.bock.de as well as in our online spare parts catalogue at bockshop.bock.d
Only use genuine Bock spare parts!
6.5 Integrated decompression valve (only FK30/275 + 325)
The valve is maintenance free.
However, constant leakage can occur after blowing off due to abnormal operating conditions. This
leads to reduced performance and increases the compressed gas temperature. In this case check the
valve and replace as necessary.
6.6 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.
Refrigerant
HFC
(e.g. R134a, R407, R 404A)
HCFC (e.g. R22)
6.7 Decommissioning
Close the shut-off valve on the compressor. Drain the refrigerant (it must not be discharged directly
into the environment) and dispose of it according to the regulations. When the compressor is depres-
surised, undo the fastening screws of the shut-off valves. Remove the compressor using an appropri-
ate hoist. Dispose of the oil inside in accordance with the valid national regulations.
Bock standard oil grade
BOCK lub E55
BOCK lub A46
D
GB
F
I
Tr
Ru
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