8).Figure. H: If the shaft does not turn freely, release it using a screwdriver inserting in the special slot. If
this is not sufficient to solve the problem, remove the pump body, undoing the relevant mounting bolts,
and clean it thoroughly to remove any encrustation.
Figure. A Figure. B Figure. C
Figure. D Figure. E Figure. F
Figure. G Figure. H
5
5). Power voltage and power frequency must be in accordance with the nominal values indicated on the
name plate.
3. NOTICES ON INSTALLATION AND APPLICATION
Drawing of Installation
1). Check the electric pump includes the cable, terminal, or plug (if equipped) before the installation to see
whether there is any damage in transit or storage. Check whether the cold insulation resistance exceeds
50
MΩ.
2). Fix the electric pump properly when installation. Use steel or hose to connect the foot valve (if
equipped) and electric pump inlet. Do not allow to use soft hose to avoid being flat. For self-priming pump,
it only needs fill up with water in the housing of pump instead of full of water in the intake pipe. In order
to keep pump reliable operation , the strainer shall be installed availably and make sure the foot valve and
strainer to be installed at least 30cm above the water bottom to avoid foreign matters
（
i.e.sand & mud)
being sucked into electric pump chamber resulting in operation failure(See Drawing of Installation). Make
sure that foot valve at intake pipe and the one end of strainer are submerged in water after completing
connection between the upper end of intake pipe and the inlet end of electric pump. The pipeline shall be
shortened as much as possible and avoid too many joints. Besides, the suction height shall not exceed
value of requirement.
3). Move the fan blade by screw driver, check whether electric pump rotates freely and whether
three–phase electric pump rotational direction is correct. As viewed from the side of fan, clockwise
rotation indicates electric pump rotational direction is correct. If its rotational direction is wrong, firstly cut
off the power immediately, then swap over any two of the
three-phases of the electric pump.
4). Make sure the intake pipe and its joint are sealed completely to avoid air leakage.
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