9. PRIOR TU USE
During installation apply all the safety regulations
issued by thecompetent authorities and dictated by
common sense.
9.1.With the appropriate bolts secure the pump to flat and solid
surfaces toavoid vibrations. The resistance of the motor shall be
more than 50M
Ω
.
9.2. Before startup, check if the pump turns freely by rotating
the fan. Remove the filling plug and fully fill the pump chamber
with clean water, then tighten the filling plug.
9.3. In case the electric pump is far from the power supply, it’s
necessary to use a thicker cable. Otherwise the pump cannot
work properly due to the big voltage drop.
9.4. Do not use soft rubber tube for inlet pipeline during
installation. A foot valve shall be vertically installed with a
distance of at least 30 cm from the water bottom to avoid
suction of sediment.
9.5. Pay attention to the water level during operation. The foot
valve shall not be above the water surface.
9.6. If the pump is not be used for a long time, it is advisable to
empty it completely, wash it with clean water and store it in a
dry, well-ventilated
place.
This product shall be installed and maintained by a
qualified person who is proficient with this instruction.
The installation and operation must be in accordance
with local regulations and the recognized operation
criteria. Install the pipeline properly according to the
requirement of this instruction, and protect it from
freezing.
CORRECT INSTALLATION
A DIAGRAM
CORRECT INSTALLATION
B DIAGRAM
1. Discharge plug
2. Electric pump
3. Outlet pipeline
4. Joint
5. Filling plug
6. Inlet pipeline
7. Foot valve
8. Support
NOTES FOR INLET PIPELINE INSTALLATION:
1. Do not use too soft rubber tube for the inlet pipeline during
pump installation.
2. The foot valve should be vertically installed 30cm from water
bottom to avoid suction of sediment (A)
3. All connections of the inlet pipelines must be sealed.
To ensure water suction, it’s necessary to reduce the quantity
of bents of the pipelines.
4. The diameter of the inlet pipe must not be less than that of
the pump inlet to avoid big hydraulic loss and small water flow.
5. Pay attention to the water level during operation. The foot
valve shall not be above the water surface (B).
6. In case the inlet pipe is longer than 10m in length or over 4m
in hoisting height, the pipe diameter should exceed diameter of
water inlet of the pump.
7. The pipelines should be anchored so that no stresses
whatsoever is transmitted to the pump.
8. It is recommended to install a filter on inlet pipeline to avoid
incoming of solid particles to the electric pump.
NOTE FOR OUTLET PIPELINE INSTALLATION:
The diameter of the outlet pipeline shall be not less than that of
the pump outlet to reduce the pressure drop, high flow rate and
noise to the lowest level.
10. ELECTRICAL CONNECTIONS
Make sure that there is no voltage at the line wire
terminals before connecting.
The electric pump shall be grounded reliably to avoid
electric leakage and an earth leakage circuit breaker
shall be equipped.
The electrical connection shall be carried out according to the
local regulations.
Check that the pump operates within the specified range on the
nameplate.
Connect up the pump (making sure that there is an efficient
grounding circuit) according to the diagram on the nameplate on
the motor.
The correct direction of rotation for three-phase motors is
clockwise, looking at the pump from the motor fan side. If this is
not the case, invert two of the phases.
switch
fuse
pressure
switch
magnetic
thermal
switch
switch
fuse
pressure
switch
magnetic
thermal
switch
Direct ConnectionY
/
Connection
L
1
L
2
L
3
M
3~
M
3~
L
1
L
2
L
3
M
3~
M
3~
L
1
L
2
L
3
L
1
L
2
L
3
T
1
T
2
T
3
T
1
T
2
T
3
