4.2 Starting-up
Before starting engine check oil level in the crankcase of the horizontally placed compressor (§ 4.8.1)
Use MAXLUBE 501 synthetic oil.
Starting of the engine:
Before starting electric motors, check voltage. Electric connections must comply with the respective
regulations. Verify fan direction. Compare motor with mains and frequency. Fuse motor correctly.
Check direction of rotation. The use of a motor starting contactor is recommended. If using a gasoline
engine driven compressor, check oil level in motor and compressor (§ 4.8.1)
Before starting the engine, open condensate drain valve so that engine starts without load. Pull the
choke (half open). As soon as the motor has been started, switch to full power, then close condensate
drain so that pressure is built up in the individual stages.
WARNING
4.3 Filling procedure
Use only cylinders that are within hydro test date and pressure rated to the fill pressure preset on your
compressor. The preset pressure relief (blow-off) on the final stage is usually 10% above the cylinder
rated pressure.
Example:
if you are filling a 3000 psi rated cylinder you should close the fill valve or shut off the
compressor at 3000 psi (NOT ABOVE IT). The 10% additional pressure, preset on
the relief valve, is just an added safety in case you can not shut off in time. Letting
the relief valve blow-off often will damage it, as it is designed to blow-off for emergency
only.
To check the pressure blow-off of your final relief valve, close the fill valve and bleed, let the
compressor build up pressure. When safety valve blows-off read the pressure at the final pressure
gauge and make a note of it for the future. After you are satisfied that the setting is correct for your fill
pressure fully open filling valve first, then open cylinders valve – monitor fill pressure during filling
operation. After reaching the desired pressure, always close cylinder valve first, then close the fill
valve. To remove fill valve from cylinder you must bleed the residual pressure by opening the bleed
cock on the fill valve.
Operation of filling valve
Bleed Cock
On/Off Knob
Page 6 of 22
