9.8 Maintenance activities - Pressure maintaining valve
9.8.1 Checking the pressure retention valve
A pressure gauge is connected upstream to the pressure retention valve.
Check the pressure retention valve for leak-tightness on both the inside and the
outside, and check its functioning.
As long as the pressure delivered by the compressor is below the set opening pres-
sure of the pressure retention valve, the display on the final pressure gauge and
the final pressure shows zero, the pressure increase before the pressure retention
valve can be watched on the pressure gauge. As soon as the pressure retention
valve starts to open, the final pressure gauge ad the final pressure display shows
the initial rise in pressure. The opening pressure can be checked on the pressure
gauge before the pressure retention valve.
See technical data for the opening pressure of the pressure retention valve.
Does the opening pressure of the pressure retention valve deviate from the specified
setting value?
Set the pressure retention valve.
9.8.2 Adjusting the pressure retention valve
The pressure retention valves may only be adjusted by trained personnel. For more
information, contact the BAUER customer service department, see Chapter 1.2.7
Contact data BAUER KOMPRESSOREN, Page 13.
1.
Disengage locknuts (if they are present).
2.
Unscrew the setting screw a little.
3.
Use the setting screw to re-adjust the opening pressure.
A rotation to the right increases the pressure, while a rotation to the left reduces it.
4.
After the adjustment has been made, check whether the pressure retention
valve is working properly, see Chapter 9.8.1 Checking the pressure retention
valve, Page 89.
OPERATING MANUAL
Maintenance | 9
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