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Les langues disponibles
Automatic rotation of the pumps is carried out also if only one pump starts.
WARNING
a) Calibration of the pressure switches mod. PY06
PY.06
Leave the switchboard predisposed for MANUAL operation.
Open a point of collection and close it when the circuit pressure has reached the level
which we intend to assign to the first pump.
Tighten screw B of the pressure switch n.1 to the point where its electric contact closes.
Manually use the pump to raise the network pressure and bring it to the level that we want
to assign to the first pump.
Unscrew screw A to the point where the pressure switch n. 1 is opened.
Repeat the operation on the other pressure switch.
b) Calibration of the pressure switches mod. PM/5 e PM12
Cycle n. 1
Thrust meter n.1 -> Pump n. 1
Thrust meter n.2 -> Pump n. 2
Cycle n. 2
Thrust meter n.1 -> Pump n. 2
Thrust meter n.2 -> Pump n. 1
Cycle n. 3
Thrust meter n.1 -> Pump n. 1
Thrust meter n.2 -> Pump n. 2
Cycle n. 1
Thrust meter n.1 -> Pump n. 1
Cycle n. 2
Thrust meter n.1 -> Pump n. 2
For correct calibration of the pressure switches the
following operations must be carried out exactly in the
sequence reported
Tighten almost to the maximum screw A of the pressure
switch
B
A
Unscrew almost totally screw B of the pressure switch
Close all the points of collection and bring the plant to
the maximum pressure by manual use of pump. Stop
the pump.
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