ENGLISH
20
7. INSTRUCTIONS
FOR
ADJUSTING THE PRESSURE SWITCH
The automatic pressurization groups are provided with a factory setting that is sufficient for most
plants and requirements. However, the setting of the pressure switch may be adjusted to adapt the
group to meet different requirements.
Adjustment of the control mechanism :
1.
Establish the minimun desired pressure value (leaving the pump)
2. Set the storage tank preloading pressure 0,2 bar less than the minimun pressure level. This
operation must be carried out only after having grained all the out the tank.
3. After having identified the model of pressure switch supplied with supplied with the pump,
calibrate it following the indications given lelow and checking the established values with a
pressure gauge.
Square D:
tighten the nut A to vary the starting pressure value. This will automatically change the
stopping pressure value; as the differential cannot be varied;
loosen the nut A to perform the opposite operation.
Telemecanique / Square D – Telemecanique / Italtecnica:
tighteen the nut B to decrease the starting pressure value, thus varving the differential;
tighteen the nut A to increase the stopping pressure value;
loosen nuts A and B to perform the opposite operation.
Telemecanique
Square D - Telemecanique
Italtecnica
Summary of Contents for GC50 + KIT 4M
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