1. For pump installation, the inlet pipe should be as short as
possible with the least turnings. The pump should be installed
in ventilated and dry environment. It could be installed outside,
provided having proper covering to prevent rain and wind.
2. For pipeline use, valves should be installed on inlet and outlet
pipelines and the inlet pipeline should be installed with check
valve.
A. Installation precautions for inlet pipelines
1. While installing the electric pump, do not use too soft rubber
tube for the inlet pipeline, avoiding to be sucked flat.
2. The foot valve should be vertically placed and installed 30cm
from water bottom to avoid sucking in sands and stones (82);
3. Joints of the inlet pipelines should be sealed with the least
elbows, no water can be sucked.
4. Diameter of the inlet pipe should be at least in accordance
with that of the water inlet, so as to avoid too much water loss
which will influence outlet performance.
5. Pay attention to drop of water level while using, the foot valve
should not be above the water surface (81).
6. In case the inlet pipe is longer than 10m or its lifting height
exceeds 4m, the pipe diameter should exceed diameter of water
inlet of the pump.
7. Ensure the pumped will not be affected by pipeline pressures
while installing the pipelines.
8. Filter should be installed in inlet pipelines so as to avoid solid
particles to enter into the electric pump.
B. Installation Precautions of the outlet pipeline
1. Pipe diameter of the outlet pipeline should be at least in
accordance with that of the water outlet, so as to reduce its
voltage drop, high flow rate and noise to the minimum.
8. ELECTRICAL CONNECTION
Unless the power is off, do not wiring the junction box.
The electric pump should have reliable grounding to
prevent current leakage with leakage protection switch
being equipped.
1) Electrical connection and protection should be conducted
according to stipulations. Specification of working voltage is
marked on the nameplate; please ensure the motor is in ac-
cordance with power supply.
2) In case the working area of the electric pump is too far
from the power supply, power transmission lines should be
of a heavier gauge, otherwise the electric pump cannot work
normally because the voltage drop is too dramatic.
3) In case the electric pump is used outdoor, extended lines
should apply rubber cables for outdoor use.
1
2
3
4
5
6
7
8
Correct Installation Diagram
1. Drain Plug
2. Electric pump
3. Water tap
4. Outlet pipe
5. Filling plug
6. Tie-in
7. Inlet pipe
8. Foot valve
B1
B2
Incorrect Installation Diagram
~220 V~
220V
switch
fuse
pressure
switch
junction box
of the motor
magnetic
thermal
switch
junction box
of the motor
~380 V~
380 V
switch
fuse
pressure
switch
junction box
of the motor
junction box
of the motor
magnetic
thermal
switch
Max. water temperature: + 40
Min. Water temperature: +4
