GEA Bock FK40 - Manual (Page 18)

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6.1 Preparation
6.2 Work to be carried out
6| Maintenance
Oil change: In principle, an oil change is not mandatory if the system is correctly manufactured
and operated. However, based on decades of experience we recommend that the following oil
change/service work is carried out:
- First oil change during the first maintenance of the vehicle.
- Then after every 5,000 operating hours, though no more than 3 years, clean the oil strainer
at the same time. If necessary, also empty the oil reservoir at the shaft seal.
Annual checks: Oil level, tightness of the compressor, running noise, pressures, temperatures,
function of auxiliary devices such as checking the capacity control.
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.
6.4 Integrated decompression valve
Only use genuine Bock spare parts!
6.3 Recommended spare parts
FK40 / ... 390 N
470 N 560 N
655 N 390 K
470 K
560 K
655 K 390 TK
470 TK 560 TK
655 TK
Designation Art.-Nr. Art.-Nr. Art.-Nr. Art.-Nr. Art.-Nr.
Set of gaskets 80230 80001 80230
Valve plate kit 80240 80241 80010 80240 80241
Set of shaft seals 80023
Oil SP 46, 1 Ltr. 02279
Oil SE 55, 1 Ltr. 02282
WARNING 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.