PACIFIC E23 – EG23
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PACIFIC E23 – EG23 Rev.01
Nardi Compressori – www.nardicompressori.com
7.13
PRESSURE MAINTAINING VALVE:
This type of valve has the purpose of maintaining constant pressure in the final filter. In this way, it is possible to
eliminate a greater volume of water, improving the air quality and the life of the cartridge. When the compressor is
switched on, the valve stays closed until the entire system reaches 150 bar, and subsequently it opens.
This valve is set by NARDI COMPRESSORI. No further calibration is required.
7.14
HEADS AND COMPRESSION VALVES:
The intake or exhaust compression valves are either
reed type or plate type. Normally in the first stage
there is a reed valve which opens and closes
according to the flow of air that is created by the
piston motion. The system operation is the same in
all the various stages. The only thing that changes
is the type and size of the valves and the plates.
It is important that the valve replacement and
cleaning is performed by trained personnel.
The steps for replacement of the valves are the following:
•
Replace all the parts of the valve and not just some elements.
•
Carefully clean the valves and remove all carbon deposits without scratching the valve.
•
Be careful when reassembling the valves to follow the right sequence of the components.
If the valve show scratches due to wear, it must be replaced.
•
Replace the O-rings.
•
Pay close attention to the image on the right, which shows the tightening sequence of the
head screws.
•
After performing the maintenance of the valves, switch on the compressor for 30 - 40
minutes, then switch it off and check again the closing of the screws and the dowels that
compress the discharge/outlet valve of the lateral cylinders.
•
The valves must be checked every 500 hours of operation.
•
After 1000 hours of operation the valves and all of their components must be replaced.
