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PRESSURE SYSTEM
The working pressure is determined by the
tension of the spring in the regulating valve
(RV). This tension can be increased to
raise the pressure and decreased to lower it
by turning the adjusting wheel clockwise
and anti-clockwise respectively.
To adjust the normal working pressure,
proceed as follows:
1. Loosen the lock nut of the regulating
valve.
2. Release Regulating Valve (turn out).
3. With the outlet valves (AOV) closed,
adjust the regulating valve (RV), until a
pressure is reached of nominal pressure
+ 2 bar (+ 29 psi).
4. Lock the regulating valve (RV) by
fixing the lock nut.
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