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© Danfoss | Climate Solutions | 2023.07
AQ450736920607en-000201 | 17
6
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Maintenance
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.
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.
6.5 Integrated decompression valve
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.de.
Only use original Bock spare parts!
The shaft seal is a wearing part, and its service life depends on the prevailing conditions.
Damaging effects on the shaft seal:
• Too little suction gas superheat, particularly during wet operation
• Too high or too low belt tension
• Thermal overload (operation outside the limits of application)
• Frequent cycling
• Long periods of stoppage
• Material deposits / dirt from the system
Due to these effects, the shaft seal can develop leaks, and it must then be replaced.
Refrigerant
Bock standard oil grade
HFC
(e.g. R134a, R407, R 404A)
BOCK
lub E55
HCFC
(e.g. R22)
BOCK
lub A46
