Motor Protection - PSH MINI Serie Manual De Instrucciones Para El Uso Y El Mantenimiento

Manual MINI_PSH 10/03/11 17:08 Página 12
Instruction Manual for Series MINI

4.1 Motor protection

All single phase versions have a motor protector and do not need any additional protection.
Note: If the motor is overloaded, it will turn off automatically and will start to work again when
the temperature falls to a normal level.
All three-phase versions must be connected to an external motor protector.
The pump must be connected to the ground socket and the electrical installation must have
a differential circuit.
Starting
5
Note: Do not start the pump until it has been primed and purged.
The pump is correctly primed when the water is just below the transparent cover.
The arrows on the pump housing indicate the correct rotation.
In order to create maximum suction capacity when starting, close the discharge valve, start
the pump and slowly open the discharge valve.
If the pump does not work correctly after 5 minutes, stop the pump, check the water level in
the suction pipe and in the pump.
Pre-filter basket cleaning
6
Make sure that the electrical power supply is turned off and can not be connected ac-
cidentally before starting work with the pump.
The pre-filter basket included in the pump must be checked every day and cleaned if nec-
essary. Before opening the pre-filter cover, close the charging and discharge valves.
After the cleaning, prime the pump again and close the pre-filter cover. The pump can
start work again.
Note: High pressure cleaning is not allowed.
THREE-PHASE THREE-PHASE
TRIANGLE
connection: connection:
lower tension higher tension
Line
STAR
SINGLE PHASE
Line Line