4.
Close the tap mentioned under step (1). After 10-12 seconds the pump will stop running, but
the power supply LED (POWER) will remain lit. Any malfunctions occurring after
these operations will be caused by improper priming or failure to prime.
2
1
)
Automatic Reset Function:
2
2
)
Troubleshooting:
1.
Read the pressure indicated by the gauge when the pump is started.
2.
Disconnect the power supply.
3.
Open a tap to discharge the pressure.
4.
Adjust the screw clockwise to increase (or counter-clockwise to decrease) the start pressure.
5.
Supply power to the the controller; if you are not satisfied with the adjustment, repeat th
operations described above until you obtain the desired pressure value.
NOTE:
The maximum pressure of the pump (closing contact pressure) and the minimum
start pressure must comply with the values shown in the table under paragraph 5.1 otherwise
the controller will go into FAILURE mode.
If the device goes into failure mode, the automatic reset function will execute a series of automatic
starts to attempt to restore operation without any manual intervention via the RESET button.
The system operates as follows: The appliance is in failure mode due to water failure, for example;
after
five
minutes in this condition the system will do a 25-second RESET, attempting to prime the
pump. If the system is able to prime the pump, the failure will disappear and the pump will be ready
to operate. However, if the failure persists, the system will do another RESET after
thirty
minutes,
and will continue in this manner systematically every
thirty
minutes for 24 hours. If the failure still
persists after all these attempts, the system will remain in this condition until the problem has been
resolved by manual intervention or when power is recycled.
closed and that
there are no leaks.
B)
The electrical connection is incorrect: refer to the instructions in Fig. 2.
C)
Electronic board malfunction: replace the electronic board.
A)
The pump is not primed; dry-run protection is active and the FAILURE LED is on: prime
the
water pipe and check by pressing the manual start button (RESET).
B)
The pump has shut down: the safety system has stepped in and the FAILURE LED is on.
If you press the manual start button (RESET) and the LED (ON) lights up; if the
pump does not start test
the output with another device such as a lamp.
C)
Electronic board malfunction: disconnect the pump from the electrical mains and
reconnect it;
the pump should start, if it does not replace the controller.
D)
No power supply: check the electrical connections, the POWER LED must be
illuminated.
E)
The pump delivers insufficient pressure, the safety system has stepped in and the
corresponding LED (FAILURE) is illuminated: make sure that the pump
pressure corresponds to the pressure value
specified in the relevant table in
section
1
8
.1.
20
)
Starting Pressure Adjustment: (P. Start):
The pump controller is factory set to start with a minimum pressure of 21.75 PSI (1.5 bar). This
pressure can be increased up to 36.25 PSI (2.5 bar) by rotating the screw found at the back of the
cone-shaped end of the device, (see Fig. 4).
To set the pump start pressure:
2) THE PUMP DOES NOT START:
A) Water loss exceeding 0.8 gpm. Make sure that all the taps along the pipeline are
1) THE PUMP DOES NOT STOP:
Summary of Contents for MHP150A
Page 12: ... MHP75A MHP150A Pump ...
