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11.11. Valves:
The valve heads of the individual stages form the top part of the
cylinders. The intake and pressure valves are fitted inside the
valve heads. Note that the valves are operated by the flow of
the medium. On the suction stroke, the intake valves open and
the medium flows into the cylinders. At the start of the compres-
sion stroke the intake valve closes and the medium opens the
pressure valve.
Please follow the instructions below for changing the valves:
•
Always replace valves as a complete set.
•
Carefully clean dirty valves.
•
Observe the correct sequence when fitting together again.
•
Check individual components for excessive wear. If the valve seat and valve disks are dented, replace the valves.
•
Use only satisfactory gaskets and O-rings on reassembly.
•
After finishing all maintenance work on the valves, turn the compressor manually and check whether all items
have been correctly installed. After 30 minutes after starting, switch off the unit and check again.
•
Replace the valves every 1000 operating hours to avoid fatigue failure.
11.12. Valve change:
Changing the valves of the 1st stage:
Put the attention at the picure and check that the mark ‘T’ Is really at the top. Remove gaskets and
O-rings if damaged.
INSTRUCTION MANUAL PACIFIC 210
