SERVICE MANUAL
Vortex Type Micro Clean Water Pump
Models: SQm、QB、WZB、AWZB、PW
Contents
I. Safety Precautions
II. Product Introduction
III. Operating Conditions
IV. Structure Diagram
V. Pump Wiring Diagram
VI. Installation Diagram
VII. Instructions for Installation
VIII. Maintenance
IX. Troubleshooting
Thank you very much for choosing the product of our company. Please be sure to read the
Operation Manual carefully before installation of the product and keep it properly, and misuse of
the product will cause personal injury or property damage.
The users must strictly observe the “Notice”, “Warning” and other terms and signs contained
in the Manual.
Danger: Failing of observing relevant rules may cause electric shock;
Warning: Failing of observing relevant rules may cause serious injury of the body;
Notice: Failing of observing relevant rules may cause product damage;
Expresses No Touching;
Expresses Must Obey;
Expresses Forbidding Act;
Expresses the Grounding Mark for electric shock prevention.
Statement: SHIMGE shall not be liable for follow loss or damage suffered as a result of failure to
comply with the content of the manual：
·Pump failure resulting from disassembly or maintenance conducted by non-professional people
without certificate, or using the pump beyond its operating conditions;
·Losses caused by voltage, machinery or chemistry;
·Environmental pollution caused by pumping dangerous medium.
I. Safety and Installation Precautions
The electric pump should be correctly equipped with an electricity
leakage protective device and you should ground the pump reliably
(connect the grounding wire to the marked terminal) at the grounding
mark of the electric pump or cable as well as the power socket is
connected to ground. As shown in the figure below, it is strictly
forbidden to connect the ground wire to the gas pipe or it may cause
explosion; do not wet the power plug and the power socket connected
shall be located at areas where it is not affected by dampness.
Gas Pipe
Grounding Wire
1
The electrical connection
must be conducted by
personnel with electrician
certificate according to the
local specifications and the
safety standards.
1. When the electric pump is working, if you want to adjust the pump location or there is any other
action to touch the pump, you must cut off the power first. It is strictly forbidden to wash, swim and
herd, etc. near the pump working face in order to avoid occurrence of accidents.
2. When transporting or installing the electric pump, it is strictly forbidden to lift the electric pump by
grasping the cable for fear of the damage of the cable and causing leakage or electric shock.
3. On account of any safety principle, maintenance in any form shall be conducted after cutting off
the power of the water pump.
The electric pump is only used to deliver clean
water or similar liquid and it is strictly forbidden to
use it to deliver any flammable, gasifiable and
explosive liquid, such as gasoline and alcohol,
etc. which is an extremely dangerous behavior.
Alcohol
The electric pump shall be installed at a cool and dry place. External motor protection should be
used to eliminate environmental concerns, or it will easily cause the acceleration of the ageing of the
water pump and the leakage danger. Motor is not waterproof and should never be submersed into
any liquid. Do not allow water to spray directly onto motor to avoid the dampness of the motor which
may damage the winding insulation and thus cause the leakage accident.
When taking anti-freezing measures for the water pump in winter, do not cover combustibles on the
motor or pump for anti-freezing in case of causing fire accident and be sure not to cover the thermal
insulation material on the motor or it will cause poor ventilation and heat dissipation to easily lead to
fire.
2
II. Product Overview
Vortex-type Micro Clean Water Pumps (hereinafter referred to as the “electric pump”)
include: SQm, QB, WZB, AWZB, PW; the electric pump consists of the motor, water pump and
seal these three parts. The motor is the asynchronous motor. The impeller structure of the vortextype pump is the vortex type which can achieve high head. WZB, AWZB and PW have the selfpriming function while QB and SQm do not. PW and AWZB are equipped with the auto control
system, which can realize the water discharge once you open the outlet valve and the electric
pump works and once you close the outlet valve, the electric pump will automatically stop working
without need to cut off the power artificially. Between the pump and the motor, the single
mechanical seal is adopted and the O-ring is adopted at the fixed seam allowance for static seal.
PW-Z series automatic self-priming pumps are configured with flow switch, pressure switch
and circuit board. Pumps can collect flow and pressure data through flow switch and pressure
switch and automatically on/off after analysing by the circuit board. PW-Z series pumps have the
functions of water-load protection, delay start and anti-jamming the pump is in the standby state.
III. Working Conditions
The electric pump shall continuously work normally under the following conditions:
1. The environment ambient shall not exceed +40℃;
2. Liquid temperature: 0~+40℃; liquid temperature of AWZB and PW: 0~+90℃
3. The PH value of the medium shall be between 6.5 - 8.5;
4. The volume ratio of the solid impurity in the medium shall not exceed 0.1% and the
particle size shall not exceed 0.2mm;
5. The voltage and frequency of the power supply must meet the rated voltage and
frequency on the nameplate of the electric pump; the fluctuation range of the voltage is ±10% of
the rated value.
3
IV. Exploded View
7
6
8
19
1
2
3
4
5
13
9
18
17
16
15
14
12
10
11
1 Stator
2 Connector
3 O-ring
4 Mechanical Seal
5 Circlip
6 Impeller
7 Vent Cock
8 Pump Body
9 Fan Housing
10 Fan
QB Series
11 Cable
12 Cable Sheath
13 Terminal Box
14 Capacitor
15 Cable Pressing Plate
16 Stator Housing
17 Bearing
18 Rotor
19 Water Deflector
4
18
17
23
22
21
20
19
1 2
24
3
5
4
6 7 8 9
16
1 Vent Cock
2 Pressure Tank
3 Adapter
4 Pressure Switch
5 Combination Screws
6 Water Deflector
7 Rotor
8 Bearing
9 Wavy Spring
10 Connector
12
13
14
15
33
11 O- ring
12 Mechanical Seal
13 Impeller
14 Pump Body
15 Slotted Cheese
Head Screws
16 Hexagon Head
Bolts
17 Filter
18 Inlet
25
11
26
PW Series
Rubber Washer19
20 Check Valve
21 Spring
22 Rubber Washer
23 Check Valve Seat
24 Set Screw
25 Capacitor
26 Rubber Washer
27 Terminal Box Cover
10
32
27
28
29
30
31
34
35
Cable Gland29
30 Fan Housing
31 Fan
32 Stator Housing
33 Stator
34 Base
35 Hexagon Head
Bolts
Terminal Box28
5
1 2
3
5
4
6 7 8 9
18
17
16
1 Flow Switch
2 Vent Cock
3 Pressure Tank
4 Pressure Switch
5 Combination Screws
6 Water Deflector
7 Rotor
8 Bearing
9 Wavy Spring
10 Connector
19
12
13
14
15
28
11 O-ring
12 Mechanical Seal
13 Impeller
14 Pump Body
15 Slotted Cheese
Head Screws
16 Hexagon Head
Bolts
17 Filter
18 Inlet
20
11
21
22
PW-Z Series
19 Set Screw
20 Capacitor
21 Control Box
22 Rubber Washer
23 Control Box Cover
24 Cable Lock
25 Fan Housing
26 Fan
27 Stator Housing
28 Stator
10
23
24
25
26
27
29
30
29 Base
30 Hexagon Head
Bolts
6
20
19
6
4
3
2
1
5
7
8
10
9
11
17
18
1 Flow Switch
2 Vent Cock
3 Set Screw
4 Pressure Switch
5 Water Deflector
6 Combination Screws
7 Rotor
8 Bearing
9 Wavy Spring
10 Handle
13
14
15
16
26
31
32
11 Metal Hose
12 Connector
13 Mechanical Seal
14 O-ring
15 Impeller
16 Pump Body
17 Slotted Cheese
Head Screws
18 Hexagon Head
Bolts
12
22
23
27
PW-ZL Series
19
20 Inlet
21 Capacitor
22 Control Box
23 Rubber Washer
24 Control Box Cover
2 Cable Lock5
26 Stator
27 Stator Housing
2 Fan8
21
Filter
28
30
25
29
29 Fan Housing
30 Foot
31 Hexagon Head
Bolts
32 Pressure Tank
24
7
1
2
3
4
16
14
13
12
11
10
9
8
7
6
5
15
18
17
1 Inlet
2 Vent Cock
3 Check Valve
4 Pump Body
5 Drain Screw
6 Pump Cover
7 O-ring
8 Impeller
9 Mechanical Seal
10 Elbow
19
23
22
21
20
AWZB Series
11 Pressure Switch
12 Pressure Tank
13 Water Deflector
14 Connector
15 Bearing
16 Rotor
17 Stator
18 Cable Sheath
19 Stator Housing
20 Capacitor
24
25
28
29
27
26
21 Terminal Box
22 Foot
23 Cable Lock
24 Wavy Spring
25 Cable
26 Rear Cover
27 Hexagon Head Bolts
28 Fan
29 Fan housing
8
1
2
3
4
5
8 9
10
11
12
16
17
6
7
25
26
27
28
18
1 Flow Switch
2 Water Inlet
3 Rubber Gasket
4 Filter
5 Pump Body
6 Hexagon Head Bolts
7 Drain Screw
8 Vent Cock
9 Pressure Tank
10 Pressure Switch
13
20
19
AWZB-H1 Series
11 Connector
12 Water Deflector
13 Impeller
14 Mechanical Seal
15 O-ring
16 Rotor
17 Bearing
18 Stator
19 Stator Housing
20 Foot
14
21
15
29
30
24
23
22
21 Wavy Spring
22 Rear Cover
23 Fan
24 Fan Housing
25 Capacitor
26 Cable Sheath
27 Terminal Box
28 Rubber Gasket
29 Terminal Box Cover
30 Cable Lock
9
28
29
30
31
32
33
10
1
2
3
4
5
6
7
25
24
8
11
23
22
21
16
17
20
18
19
12
13
14
15
9
2627
1 Fan housing
2 Countersunk Flat
Head Screws
3 Fan
4 Hexagon Head Bolts
5 Rear Cover
6 Wavy Spring
7 Rotor
8 Bearing
9 Flat Washer
10 Stator
11 Handle
WZB Series
12 Cross Recessed Small
Pan Head Screw
13 Capacitor
14 Cable Sheath
15 Cable
16 Countersunk Flat
Head Screws
17 Erminal Box Cover
18 Cable Pressing Plate
19 Stator Housing
20 Connector
21 Hexagon Head Bolts
22 O-ring
10
23 Mechanical Seal
24 Impeller
25 O-ring
26 Vent Cock
27 Check Valve
28 Hexagon Head Bolts
29 Water Inlet
30 Pump Body
31 Hexagon Head Bolts
32 O-ring
33 Slotted Cheese
Head Screws
V. Wiring Schematic Diagram of the Electric Pump
Flow Switch
Pressure Switch
Secondary
Winding
Common Line(Black/Red)
Subline(Yellow/Green)
Capacitor
Motor
Main Line(White)
Main
Winding
L1
Controller
N1
N
L
1AWZB-H1 、PW-Z Series AWZ B、PW Series
Common Line(Black/Red)
Subline(Yellow/Green)
Capacitor
Main Line(White)
Secondary
Winding
Motor
Main
Winding
QB、SQm、W ZB Series
VI. Installation Schematic Diagram
Subline
(Yellow/Green)
Secondary
Winding
Motor
Capacitor
Main Line(White)
Main
Winding
Common Line
(Black/Red)
Pressure
Switch
Tap Water Pressurization
11
Suction
Head
Filter
Lifting Water from Well
Roof Water Tower Indirec t Press ure Wa ter Supply
12
VII. Installation of the Electric Pump and the Precautions
Before installation and use, you should check
whether the electric pump is damaged during
the transportation and storage, such as whether
the cable, outgoing line and the plug (if
equipped), etc. are intact and whether the
insulation resistance is higher than 50MΩ.
WARNING
When installing, you should fix the
pump well, and both the inlet and
outlet pipelines should be supported
by support frames and not only by
the pump body.
1. Use steel tube or rubber tube (not too soft for
fear of being sucked flat) to connect the foot
valve and the inlet of the electric pump, and the
inlet pipeline and the junction part shall be
ensured sealed without leakage.
2. The water outlet shall be connected firmly in
case of water splashing on the motor part and
cause electricity leakage of the electric pump.
When u sing the rubber t ube, ple ase pay
attention to its temperature tolerance limit and
avoid breakage and water leakage of the rubber
tube resulted from its heating and deformation.
3. After connecting the upper end of the inlet
pipe and the inlet of the electric pump, you
should ensure that the foot valve of the water
inlet is immersed in the water. In order to ensure
the reliable use of the electric pump, you should
set the effective filter screen and the foot valve
and the filter screen are requested to be over
30cm far from the bottom of pool in case that the
mud and sand are absorbed into the pump cavity
and affect the operation.
4. At the same time, it is required that the
installation of the pipelines should be as short as
possible and try to avoid multi connectors, and
the suction height shall not exceed the suction
requirement of the electric pump.
1. When using, you should pay attention to the
water level and not expose the foot valve or lower
end of the inlet pipe above the water surface.
2. When installing the water inlet, please pay
attention that the height of the inlet pipe shall not
exceed that of the inlet of the pump, or it will
cause the suction difficulty of the pump.
NOTICE
Head( H)
Sucti on (Hs)
≥30cm
13
1. When first use it, please be sure to fill the pump
body with water and then plug in the power to
avoid dry operation without water.
2. Self-priming pumps can start with the pump
body filled with water, do not have to keep all
inlet pipes filled with water, and the inlet pipes of
non self-priming pumps must be filled with water
and exhaust all air in pipeline system.
Be for e usi ng t he p ump , ple ase use the
screwdriver to toggle the fan blades to check
whether the electric pump rotates smoothly.
NOTICE
For areas with high sand content, it
is advised to install a Y-shaped filter
at the inlet pipe to prevent the sand
from entering into the pump body
and causing wearing or blocking of
the impeller.
Y-shaped Filter
The electric pump shall be conducted test run
before use, and the time shall not exceed 10s
because long-time dry operation will damage the
mechanical seal. For three-phase electric pump,
you need to check whether the rotation direction
is consistent with the rotation mark. In case of
inverse rotation of the electric pump, you should
cut off the power immediately and adjust any two
phases of the three phases.
The electric pump should be installed at places
wh ere it is c onven ie nt f or che cking and
maintenance and be kept dry and ventilated.
When installing the electric pump at narrow
places, you should install it according to the
figure below and the fan housing must be at a
distance of over 25cm from the wall to facilitate
heat dissipation.
≥25cm
≥25cm
≥25cm
NOTICE
You should set drainage ditch around the
electric pump to form natural drainage to avoid
property damage due to water leakage when
using, repairing and replacing the water pump
(especially at the basement, kitchen, stairs and
other places).
NOTICE
Conne ct t he sewe r
14
If the user wants to change
the electric pump to auto
control, he just needs to
i n s t al l an a p p ro pr ia te
pressure control device on
the outlet pipeline.
For three-phase electric pump that needs to be
equipped with an overload protector, you
should select the matching overload protector
according to the current or power.
INTPUT
A B C
FUSE
OUTPUT
A B C
You should try to avoid using
the vortex pump within the
maximum hea d range in
case that the electric pump
is damaged due to overload.
The full-open use of the
faucet consumes little power
and sa v e s the ele c t r i c
energy.
When you need to adjust the pressure switch,
you shall open the housing of pressure switch
and use a slot type screwdriver or wrench to
turn the pressure adjusting screw towards the
“+” direction.
When non-professional personnel adjust the
switch, they are prohibited to operate with the
power on; when professional personnel operate
with the power on, they must take the safety
protection measures.
WARNING
Square Pressure
Switch Adjusting
Screw
AC380V
PUMP
If you have to lengthen or replace the cable,
ple ase u s e th e cabl e wit h the s a me
specifications or specifications exceeding the
original ones, and pay attention that the
connection should be firm, waterproof and
insulating.
The electric pump shall not operate
more than five minutes with the
outlet valve closed because the
long-time operation without flow
change will cause the temperature
and pressure rise of the liquid in the
pump body which will further lead to
leakage or damage of the water
pump, pipeline and other parts.
NOTICE
OFF
Round Pressure
Switch Adjusting
Screw
15
When the pump is used for pumping hot or hard
water, or it is used in aging pipelines, you need to
regularly clean the foreign matters on the check
After installation and use, you shall
remove and dispose the packing
materials according to the local law.
valve and filter screen to avoid the failure of the
flow switch.
WARNING
Foam
VIII. Maintenance
1. Regularly check the insulation resistance between the electric pump winding and the stator
housing, when it is close to the working environment, the insulation resistance shall not be lower than
5MΩ, otherwise you must take relative measures and use it when the requirements are reached.
2.Before conducting any maintenance operation, you should cut off the power to ensure that the
motor will not operate due to occasional operation.
WARNING
5
4
6
5
4
6
Normal use after 2000 hours, the pump should be sent to the local repair station, according to the
following steps of electric pump maintenance, and regular maintenance should be conducted as per
the following steps:
Disassembly: Check all wearing parts, such as the bearing, mechanical seal and impeller, flow
switch, pressure switch, pressure tank, etc., and conduct replacement timely in case of damage.
Flow Switch
Flow Switch
Pressure Tank
Pressure Switch
Mechanical Seal
Impeller
Bearing
Impeller
Pressure Switch
Pressure Tank
Beari ng
Mechanical Seal
16
1.When the environment temperature is
Fault
Cause
Remedy
Difficulty in
starting
1. Low voltage;
2. Default phase of
the electric pump or
breakage of the
cable;
3. Stuck impeller ;
4. Too much voltage
reduction of the
cable;
5. Capacitor damage;
6. Burned-out stator
winding.
1. Ask the electric power company to solve or add the
voltage; regulator and adjust the voltage to 0.9 – 1.1 times of
the rated value
2. Check the switch wiring terminal and the cable;
3. Use the screwdriver to toggle the rotation shaft at the fan
end to make it rotate flexibly or disassemble the pump body
to clear the debris;
4. Thicken the cable properly;
5. Send it to the maintenance center to replace the capacitor
with one with the same capacitance;
6. Send it to the maintenance center to replace the winding
coil.
lower than 4℃, you should empty the water
in the pump body for fear of freezing and
breaking the pump body. Before starting the
electric pump again, you must first check
whether the pump shaft rotates flexibly and
fill water into the pump body.
2.If the electric pump is not in use for a long
time, you shall disassemble the pipelines,
empty the water in the pump, clean the
main parts and components, conduct rustproof treatment, place it in a dry and
ventilated location and keep it properly.
Air tight test: After disassembly or replacement of
various sealing units, the pressure-bearing parts
and complete machine shall be conducted a water
(air) pressure test under the maximum working
pressure for 3 minutes and no leakage or sweating
phenomena shall occur.
MPa
NOTICE
End Plug
NOTICE
Recycling of the electric pump shall observe the
local laws and regulations with regard to recycling
and reusing.
IX. Troubleshooting
Every three months you use the water pump, you
need to check whether the pressure tank is filled
with air; if there is no air inside, you need to refill
air into the pressure tank as per the pressure
marked on the tag of the pressure tank.
NOTICE
17
Fault
Cause
Remedy
Insufficient fl ow o r
pressure
1. Wrong pump sel ec ti on
2. Overlong inlet pipeline, overhigh head or serious bending of
the pipeline
3. Insufficien t wa te r so ur ce
4. There are fore ig n ma tt er s
blocking the inlet pipeline, filter
screen or foot valve
5. Serious wearing of the
impeller
1. Select correct pump
2. Shorten the pipeline, use it withi n th e
head application range or make pipeli ne
bend gently
3. Check the water source
4. Wa sh a nd c le an t he pipeline, filter
screen or bottom valve and clear the
blocking debris
5. Replace the impeller
The motor runs
but no water is
discharged
1. There is air lea ka ge a t th e
water inlet pipeline
2. There is air ret ai ne d in t he
pump cavity
3. Air enters in through the
sealing elements
4. The water leve l of t he w el l is
too low
5. The foot valve i s no t op en ed o r
seriously blocked; the pipeline
resistance is great; the suction
height is too high
1. Check whether the water inlet
pipelines and joints are sealed well an d
confirm that the seal is reliable
2. Refill water into the pump body and
discharge the air
3. Adjust or replace the sealing element s
with new ones
4. Adjust the installation height of t he
water pump
5. Check the flexibility of the foot val ve ,
remove the stopper, try to shorten the
water inlet pipeline and reduce the
suction height
The motor does
not work
1. The protecto r is d is co nn ec te d
or the fuse is burned out
2. The impeller i s st uc k
3. The stator win di ng i s bu rn ed
out
4. The voltage is t oo l ow
5. The cable is bro ke n
1. Check whether the using head or
supply voltage meet the specificat io ns .
The motor does not work when it is
overheated, if it does not work when it i s
cooled down, please contact the loc al
retailer
2. Clear the debris
3. Reinsert and rewind the coils and
conduct an overhaul
4. Ask the electric power company to
solve or add the voltage regulator
5. Replace the cable
The stator
winding is burned
out
1. The supply vol ta ge i s to o lo w
2. Wa te r en te rs i n the motor,
which causes short circuit of the
coil
3. The impeller i s st uc k
4. The electric p um p is s ta rt ed
too frequently
5. Over-load operation of the
electric pump
6. Default phase of the threephase electric pump
Clear the trouble, disassemble th e
winding, reinsert and rewind the coil a s
per the original technical requirem en ts
and soak and dry the insulation varnish
or send it to the maintenance unit for
repair
18
Troubleshooting AWZB and PW Auto Self-priming Pump
Fault
Cause
Remedy
The electric pump
cannot be halted
when water is not
used
1. The water leve l is l ow er t ha n
the pump suction
2. The pressure o f th e wa te r
outlet pipeline is lower than the
switch stop pressure and
cannot ensure the switch is
completely cut off
3. The water pump i s us ed t o
pump circulating water
4. There is no valv e at t he w at er
outlet pipeline of the electric
pump and the water is directly
pumped into the water tank
1. Reduce the installation height of th e
pump
2. Ask the profession personnel to pro pe rl y
turn down the switch pressure value , fir st
cut off the power, r em ov e th e pr es su re
switch cover and use the screwdrive r to
slowly turn it in the “-“ direction to an
appropriate position
3. Manually control the power switc h
4. Install a valve on the water outlet
pipeline or equip a float switch in the wate r
tank
The electric pump
does not start
when water is
used
The pressure of the water inlet
and outlet pipeline is higher
than the starting pressure of
the pressure switch
Ask the profession personnel to pro pe rl y
adjust the switch pressure value, f ir st c ut
off the power, rem ov e th e pr es su re s wi tc h
cover and use the screwdriver or wren ch t o
slowly turn it in the “+“ direction to an
appropriate position
The electric pump
is started
frequently when
water is used
1. The pressure fl uc tu at io n
range of the pipeline networks
of the tap water is overlarge
2. The water disc ha rg e of t he
faucet is obviously less than
the water inflow
3. There is sligh t le ak ag e
phenomenon at the mechanical
seal, check valve or pipeline of
the electric pump
4. The start/st op p re ss ur e
range of the pressure switch is
not consistent with the actual
working conditions
5. The pressure t an k le ak s ai r
and the air pressure is
insufficient , so i t ha s no b uffer
function
1. When the pressure of the pipeline
networks of the tap water is not stable ,
please adjust the start/stop pres su re
range of the pressure switch to the
maximum limit according to the actu al
condition during the water consumpt io n
peak period
2. Adjust the valve on the water inlet
pipeline of the electric pump to make t he
water inlet and outlet flow of the elect ri c
pump basically balanced
3. Find out the leakage point and treat i t
until it is completely sealed
4. Ask the professional personnel to o r
under the guidance of the professio na l
personnel, adjust the start/sto p pr es su re
range of the pressure switch to meet th e
actual working conditions; or sel ec t a 19 L
or bigger pressure tank
5. Refill the pressure tank with air as pe r
the pressure value on the tag of the
pressure tank
19
Troubleshooting of PW-Z、AWZB-H1 Series Electric Pump
Fault
Cause
Remedy
The electric pump
is started
frequently when
water is used
1. The water discharge of the faucet is little
2. Fault of the flow switch (Check method: Unplug the
plug of the flow switch on the controller and make the
socket of the flow switch on the controller contact short
circuit, if the fault is improved, then it is the fault of the
flow switch)
3. The pressure tank leaks air and the air pressure is
insufficient, so it has no buffer function
1. Properly turn up the
faucet
2. Replace the flow
switch with a new one
3. Refill the pressure tank
with air as per the
pressure value on the tag
of the pressure tank
The electric pump
does not start
when water is used
1. The setting of the pressure switch is too low or the
fault of the pressure switch (Check method: Unplug the
plug of the pressure switch on the controller and make
the socket of the pressure switch on the controller
contact short circuit, if the electric pump can be started,
then the setting of the pressure switch is too low or it is
the fault of the pressure switch)
2. Fault of the controller (Check method: Unplug the
plug of the flow switch on the controller and make the
socket of the flow switch on the controller contact short
circuit, but the electric pump still cannot be started)
1. Ask the professional
personnel to properly turn
up the pressure of the
pressure switch, if the
electric pump still cannot
work normally, then
replace the pressure
switch with a new one
2. Replace the controller
with a new one
The electric pump
cannot be halted
when water is not
used
1. The check valve is stuck by the debris and cannot be
reset or the fault of the flow switch (Check method:
Unplug the plug of the flow switch on the controller and
the electric pump is halted)
2. The setting of the pressure switch is too high or the
fault of the pressure switch (Check method: Unplug the
plug of the pressure switch on the controller and the
electric pump is halted)
1. Clear the debris of the
check valve or replace
the flow switch with a
new one
2. Ask the professional
personnel to properly
turn down the starting
pressure of the pressure
switch or replace the
pressure switch with a
new one
Pressure Switch
Plug(2-wire)
Swit ches Wiring
Flow Switch
Plug(3-wire)
Flow Switch
Pressure Switch
Note:
1.The figures in the Manual are all schematic figures, and please understand that the electric pump and the
parts you buy may be inconsistent with the figures in the Manual.
2.The performance of the product is improving constantly and all the products (including the appearances and
colors and so on) should be pursuant to the material object; the product will be subject to change without
further notice.
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