Activities Level A Level B Level C
Take service readings (air, oil, water temperature and
pressure)
X X X
Check cooler functions (approach temperature) and clean if
necessary
X X X
Change intercooler condensate check valve X X X
Check intercooler blowdown valve X X X
Check for air, water and oil leakage X X X
Check critical bolt/coupling connections X X X
Check operation of safety valves X X X
Check for presence of water in lube oil X X X
Change Roto Z oil (16000 hrs or 2-yearly) - - X
Inspect/change air filter element(s) X X X
Check condition of air intake chamber X X X
Change compressor oil filter (8000 hrs or annually) - X X
Replace filter element of gear case breather X X X
Check cycle of air intake throttle valve X X X
Replace diaphragm of air throttle valve X X
Overhaul air intake valve X
Check functioning of check valve (8000 hrs or annually) X X X
Overhaul check valve X
Check condition of balance piston diaphragm X X -
Change balance piston diaphragm - X X
Check/Service condensate drain(s) X X X
Overhaul drain(s) - X X
Grease main drive motor bearings (according to motor data
plate)
X X X
Clean fan cowl of electric motor X X X
Check rubber inserts of drive coupling (arr. E) X X
Replace inserts of drive coupling (arr. E) X
Check condition of drive gear teeth X X
Take and record all S.P.M. readings. On VSD compressors
also register the motor speed
X X X
Inspect electrical contactors X X X
Check all electrical connections X X
On VSD compressors, if applicable, replace motor carbon
brush
X
On VSD compressors, if necessary, clean electrical cabinet
with vacuum cleaner
X X X
Check oil quantity X X X
Replace shaft seal - - X
Replace the demister sponge of the integrated dryer - - X
Inspect the dryer heater - - X
Inspect the dryer rotor - - X
Instruction book
284 2920 1815 04
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