Cap.7 _ Maintenance
pag.
48
Use and maintenance manual
MCH-36
7.9 - TRANSMISSION BELTS
7.8 - CHECKING THE SAFETY VALVE
Belt tension must be checked monthly.
The transmission belts must be replaced every 500 working hours of the compressor.
The final safety valve protects bottles from being filled with air at too high a pressure; the valve setting is made
at the time of testing the compressor.
The safety valve must be tested every time bottles are refilled.
After attaching the coupling to the bottle start the compressor with the bottle taps closed. Once you have
checked that the safety valve trips at the right pressure (observe the gauge) you can open the taps and pro-
ceed with the refill.
To check for proper transmission belt tension (
a
)
exert a pressure of approximately 10 Kg on the
belts; check that the belts do not flex by more than 1
cm with respect to their original position.
Should they flex more than this the belts must be
replaced.
a
Do not carry out these tasks if the compressor has only just shut down; wait for the
compressor to cool.
All maintenance work must be carried out with the compressor OFF and the power supply lead
unplugged from the mains socket.
DANGER:
7.9.1 - CHECKING TRANSMISSION BELT TENSION
Should the safety valve fail to operate properly contact the AEROTECNICA COLTRI S.r.l. technical
assistance service.
IMPORTANT:
