USER’S MANUAL
CLEAN WATER PUMP
Models:SQm,QB,WZB,AWZB,DK,SHF(m),SGA(m)
CP(m),2SGP(m),SGT,JET,AUTOJET,SGJS,SGJW
SHIMGE PUMP INDUSTRY GROUP CO., LTD.
Thank you for choosing our company’s products, please read this manual
1.Prime enough water into pump
or excessive
2.Foot valve, strainer or impeller
or adjust head in the
conform to requirements, if not, adjust
Rewinding according to original
technical requirement after
soak and dry the
electric pump in the insulating lacquer,
carefully and keep it properly before use.
6. TROUBLESHOOTING
MALFUNCTION MAIN REASONS SOLUTIONS
WARNINGS
Before operation, make sure that the electric pump is properly grounded.
Don’t touch the electric pump while it i s running.
Don’t make the electric pump run dry.
1. PORDUCTS OVERVIEW
Clean Water Pumps (hereafter referred to as simply“electric pump”) include peripheral pumps of
models SQm, QB, WZB, AWZB and centrifugal pumps of models DK, SHF(m), CP(m), 2SGP(m), SGT
and jet pumps of models JET, AUTOJET, SGJS, SGJW. The electric pump is made up of motor, water
pump and seal. Motor adopts asynchronous one. Incorporating vortex impeller, the peripheral pumps enjoy
high head, among which, models WZB, AWZB are capab le o f self-priming, but models QB, SQm can not.
Model AWZB is equipped with automatic control system which mean the electric pump can pump water
when the valve at outlet is opened whereas stop work when it is closed. Thus, this model can work
automatically without switching power off by manual operation. Adopting centrifugal impeller and
volute-casing, the models DK, SHF(m), SGA(m), CP(m), SGT, 2SGP(m) are characterized by large
outflow, stable operation and low noise. Jet pumps of models JET, SGJS, SGJW adopt unique structure
and have function of self-priming. Compared with model JET pump, the model AUTOJET pump is
equipped with pressure tank, pressure control and pressure meter, thus it is convenient to control its
operation automatically. Between the water pump and the motor，single end mechanical seal is applied,
whereas O- rings are used for static seal at all fixed spigot joints.
2. CONDITIONS FOR USE
The electric pumps shall keep normal and continuous working under the following conditions:
1). Maximum ambient temperature: +40°C；
2). Maximum medium temperature: +40°C;
3). Medium pH value: 6.5-8.5;
4). Maximu m volumetric ratio of solid impurities content in the medium: 0.1%
particle: 0.2mm;
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. Maximum size of solid
Electric pump starts
difficultly
Water priming
failure
Insufficient flow
Electric pump stops
operation suddenly
Stator winding burnt
1.Low power voltage.
2.Lost phase or cable broken .
3.Impeller clogged.
4.Excessive cable volt age-drop.
5.Capacitor damaged.
6.Stator w in ding burnt.
1.Air resi de in pump chambe r.
2.Air leakage occur inside intake pipe.
3.Foot valve not opened or clogged
severely, large resistance occur inside
pipe, high s uction height.
4.Air leakage for airtight packing occur
inside pump
1.Excessive long pipe
high head or pipe bent severe ly.
partially clogged.
3.Impeller worn out severely.
1.Switch broken off or fuse burnt .
2.Impeller clogged.
3.Stator winding burnt out
1.Excessive low power voltage
2 Winding short-circuit due to water
left in motor.
3.Impeller clogged.
4.Electric pump starts frequently.
5.Electric pump overload.
6.Phase lost for three-phase electric
pump.
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1.Ajust voltage into 0.9-1.1 times of the
rated value.
2.Check switch terminal and cable.
3.Correct clogged pos ition or clean off
the foreign matters.
4.Thicken cable properly.
5.Replace capacitor.
6.Rewind and overhaul.
chamber t o exhaust air.
2.Check j oints, pip es, etc to en sure seal
properly.
3.Check foo t va lve, rem ove ob st ruction,
shorten i ntake pipe, reduce th e suction
height.
4.Adjust or replace airtight packing.
1.Cut pipe down,
range of rated value or make pipeline
bending to be flat.
2. Clean off obstruction
3. Replace impeller.
1.Check whet her h ead or power voltage
accordingly.
2.Remove foreign matters.
3. Rewinding and overhaul.
dismantlement, then,
or send it to the service agency for
repair.
8).Figure. H: If the sh aft does not tur n freely, release it using a screwdriver in serting 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
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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 installati on to see
whether there is an y damage in transit or storage. Check whether the cold insulation resistance exceeds
50MΩ.
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 ord er
to keep pump reliable operation , the strainer sh all be in stalled availably and make sure the foot valve and
strainer to be installed at least 30cm above the water bottom to avo id foreign matters （i.e.sand & mud)
being sucked into electric pump c h amber resulting in op eration failure(See Drawing of Installation). Make
sure that fo ot valve at intake pipe and the one end of strainer are submerged in water after completing
connection between the upp er end of intake pipe and t he inlet end of electric pump. The pipeline shall b e
shortened as much as possible and avoid too many joints. Besides, the suction height sh all 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
4). Make sure the intake pipe and its joint are sealed completely to avoid air leakage.
three-phases of the electric pump.
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5). Fix the outlet pipe securely in order to prevent water from splashing th e motor that may lead to electric
leakage.
6). Set brackets to support the intake pipe and outlet pipe and these pipes shall not depend solely on the
pump body for support.
7). If user wants to change the electric pump into automatic control mode, the proper pressure control
device shall be fitted on the outlet pipe.
8). On use of electric p ump, neither place it horizontally in water nor put it submerged in water in
order t o prevent the mot or f rom rain or spraying, n or sh all it be sprayed by a powerful jet of water
in order to avoi d des troy i ng winding insulation due to moisture by motor.
9). Creepage protection device shall be installed correctly and ensure it is reliably grounded at the
position of grounding mark of the electric pump or of the cable ( except for electric pump equipped
with three-pin plug ). Meanwhile, the power socket should also be reliably grounded. If the
three-phas e electric pump needs equip with ove rload protecti on devi ce, it is necessary to choose the
matched one acc o rding to the current or power.
Wiring Diagram of Protection Device
10). For peripheral pumps, they should not reach the maximum head when in use to avoid overl oa d.
11). For centrifugal impeller pumps, they should be used in range of the prescribed head (except for
electric pump with full head coverage) to prevent them from damage due to overload.
12). Check the water level to see whether it is lowering and do not allow to let the foot valv e or the lower
end of intake pipe out of water.
13). During the operation, if user wants to adjust the electric pump pos ition or touch it, firstly cut off
the power supply to avoid accident.
14). In order to avoi d accident s, swimming , washi ng, her ding nearby t he
pump are forbidden.
working space of electric
4. MAINTENANCE
1). Regularly check the insulation resistance between the electric pump winding and motor casing. The
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cold insulation resistance shall not be lower than 50MΩ. Otherwise, corresponding measures shall be
taken. The electric pump could not be reused until it meets the operation requirement.
2). The maintenance job should be taken according to the next steps:
Dismantlement: Check various vulnerable components including roller bearings, mechanical seal, impeller,
foot valve, etc. Replace them timely if damage is found.
Air tightness test: Conduct hydraulic (or pneumatic) pressure test for components used to pass flow
through their passages according to maximum hydraulic (or pneumatic) actuating pressure after
disassembling pump for repair or replacing various airtight packing. The test should last for 5 minutes. If
no leakage or sweat occur during the time, pass the test.
3). Drain off residual water inside pump when ambient temperature is lower than 4 ℃ to avoid crack
occurrence for pump body due to frost.
4). If th e electric pump is to r emain unused for a long period of time, firstly disassemble the pipeline and
drain off the residual water, then rinse the main components for rust-proof treatment, finally, keep it in the
dry and well-ventilated place and store it properly.
5. ILLUSTRATIONS ON INSTALLATION AND MAINTENANCE
1).Figure. A: The electric pumps must be installed in a dry well-ventilated place with an ambient
temperature of no more than 40℃. Fix the pump in place on a solid flat surface using suitable bolts to
avoid vibration.
2).Figure. B: The intake pipe must be slightly angled up towards the intake mouth to avoid the formation
of air locks.
3).Figure. C: The p ipes must alwa ys be fitted u sing the r elated brackets to avoid transmitting stress to the
pump body.
4).Figure. D: The specifications on the electric pump name plate and rated line values are the same.
5).Figure. E: Check that three-phase electric pumps rotate clockwise when looking at the pump from
motor fan side, swapping over two of the phase connections if they do not.
6).Figure. F: Fill the electric pump completely with cl ean water before switching it on. The water should
be poured in through the priming plug.
7).Figure. G: When there is risk of freezing, empty the electric pump through the drain plug on the
of pump body, making sure you prime it when subsequently starting it again; check that the foot valve is
clean at regular interval s; if the electric pump is to remain unused for a long period of time(e.g. in the
winter), it is advisable to empty it completely, rinse it with clean water and store it in a dry place.
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