Dover PSG BLACKMER AIR VALVE Anweisungen für Installation, Betrieb und Wartung - Seite 6
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AIR VALVE ASSEMBLY
1.
Remove the snap ring (83) from the adjusting rod on the
new diaphragm assembly (9C).
NOTICE:
Prior to assembly, the area around the spacer between
the diaphragms and the inner diameter of the vent plate
must be greased with a lithium based grease. Remove
any grease from the outer diameter of the vent plate and
diaphragm surfaces.
2.
Being careful not to damage the diaphragm, place the
vent plate (6A) between the two diaphragms by pulling
the pump side diaphragm corners through the center hole
in the vent plate.
3.
Insert the new diaphragm assembly into the adjustment
bushing (2C).
4.
Install the plate (6) on the air valve with the holes in the
diaphragm, vent plate and plate lined up. Attach the
assembly with the two machine screws (5A), tightening
securely.
5.
Install both locknuts (2A) all the way down to the
adjusting bushing and replace the snap ring (83).
6.
Install a new gasket (10) and insert the four capscrews (5
& 5C) with lockwashers (5B) into the air valve assembly.
The relief valve spring must be confined between the
boss on the air valve (9) and the boss on the diaphragm
assembly (9c).
7.
If removed, reinstall the valve (9). Place the spring (8)
between the boss on the diaphragm assembly and the
valve. Mount the air valve assembly to the pump,
ensuring that the gasket is properly seated. Torque the
capscrews (5 & 5C) to the appropriate value depicted in
Table 1.
8.
With a new O-ring (88) installed, attach the air valve cap
(1) securely.
9.
Adjust the new valve as provided in the "Air Valve
Adjustment" section of this manual.
NOTES
201-F00
Page 6/8
NOTICE: