• Ensure that the tank pre-loading pressure
does not exceed the minimum value of the
pressure switch. Set the pre-loading pressure
at 0.2 bar below the minimum value of the
pressure switch.
8.6.2 The motor does not stop when the demand
for water has ceased
Cause
Problem with the pressure switch
Remedy
• Ensure that the value at which the pressure
switch is set to stop the motor does not
exceed the pressure the pump can generate
(suction + delivery). Set the pressure switch at
a lower pressure.
• Check that the pressure switch contacts move
freely. If not, change the pressure switch.
8.6.3 The pressure switch frequently starts and
stops during normal water delivery
Cause
Incorrect pressure switch setting
Remedy
• Check the setting of the pressure
switch. Increase the setting value
incrementally until the problem is resolved. Do
not forget to reset the minimum intervention
pressure.
• The pressure tank diaphragm is broken.
Replace the pressure tank.
9. Technical data
9.1 Operating conditions
System pressure Max. 6 bar / 0.60 MPa
Suction lift
Max. 8 m, including inlet-pipe
pressure loss at a liquid
temperature of 20 °C
Liquid
temperature
Max. 40 °C (S1) / 60 °C (S3
1
)
Ambient
temperature
Max. 40 °C (S1) / 55 °C (S3
1
)
Relative humidity Max. 98 %
Enclosure class IP44
Insulation class F
Supply voltage
1 x 220-240 V, 50/60 Hz
1 x 115 V, 60 Hz
Start/stop
frequency
Max. 20 per hour
Sound pressure
level
Max. sound pressure level of
the pump:
JP 3-42: 68 [dB(A)]
JP 4-47: 70 [dB(A)]
JP 4-54: 74 [dB(A)]
JP 5-48: 81 [dB(A)]
1
S3 means that the pump will run in intermittent operation to
cool down the motor.
9.2
Head and flow rate
Max. head
JP 3-42: 42 m
JP 4-47: 47 m
JP 4-54: 54 m
JP 5-48: 48 m
Max. flow rate
JP 3-42: 3 m
3
/h
JP 4-47: 4 m
3
/h
JP 4-54: 4 m
3
/h
JP 5-48: 5 m
3
/h
22
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