DAYLIFF DHF, Installation & Operating Manual

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3
3. ELECTRICAL CONNECTIONS
WARNING
The installer is responsible for making electrical
connections to the mains supply in compliance with
relevant local regulations. Ensure that a professional
electrician carries out the electrical connections and that
the following guidelines are followed:-
• All installations must be provided with an isolator to cut off mains power
supply and coarse current protection in the form of a fuse or MCB rated at 2-3
times the full load current as given on the pump plate.
• Ensure that the power supply rating complies with the specification on the pump
rating plate.
• Electrical connections must be made according to details in the pump junction
box cover and effective earthing must be provided according to local
regulations.
• Single-phase motors are protected against overloads by a thermal
overload fitted in the motor windings.
4. PRIMING
FILL
WARNING
All non-self priming pumps must be primed before
operation. To do this completely fill the pump
housing with clean water through the priming plug
before switching it on. When full replace the
priming plug and start the pump checking there is a
steady flow at the pump outlet. The pump should be
primed whenever it has not been used for a long
period of time or when air has entered into the
system.
Serious damage will occur if a pump is not properly primed
and runs without water.