SHIMGE SQm User manual

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
carefully and keep it properly before use.
WARNINGS
Before operation, make sure that the electric pump is properly grounded.
Don’t touch the electric pump while it is 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 capable of 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). Maximum volumetric ratio of solid impurities content in the medium: 0.1%. Maximum size of solid
particle: 0.2mm;
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6. TROUBLESHOOTING
MALFUNCTION MAIN REASONS SOLUTIONS
Electric pump starts
difficultly
1.Low power voltage.
2.Lost phase or cable broken .
3.Impeller clogged.
4.Excessive cable voltage-drop.
5.Capacitor damaged.
6.Stator winding burnt.
1.Ajust voltage into 0.9-1.1 times of the
rated value.
2.Check switch terminal and cable.
3.Correct clogged position or clean off
the foreign matters.
4.Thicken cable properly.
5.Replace capacitor.
6.Rewind and overhaul.
Water priming
failure
1.Air reside in pump chamber.
2.Air leakage occur inside intake pipe.
3.Foot valve not opened or clogged
severely, large resistance occur inside
pipe, high suction height.
4.Air leakage for airtight packing occur
inside pump
1.Prime enough water into pump
chamber to exhaust air.
2.Check joints, pipes, etc to ensure seal
properly.
3.Check foot valve, remove obstruction,
shorten intake pipe, reduce the suction
height.
4.Adjust or replace airtight packing.
Insufficient flow
1.Excessive long pipe
or excessive
high head or pipe bent severely.
2.Foot valve, strainer or impeller
partially clogged.
3.Impeller worn out severely.
1.Cut pipe down,
or adjust head in the
range of rated value or make pipeline
bending to be flat.
2. Clean off obstruction
3. Replace impeller.
Electric pump stops
operation suddenly
1.Switch broken off or fuse burnt .
2.Impeller clogged.
3.Stator winding burnt out
1.Check whether head or power voltage
conform to requirements, if not, adjust
accordingly.
2.Remove foreign matters.
3. Rewinding and overhaul.
Stator winding burnt
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.
Rewinding according to original
technical requirement after
dismantlement, then,
soak and dry the
electric pump in the insulating lacquer,
or send it to the service agency for
repair.
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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
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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 installation to see
whether there is any 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 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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5). Fix the outlet pipe securely in order to prevent water from splashing the 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 pump, neither place it horizontally in water nor put it submerged in water in
order to prevent the motor from rain or spraying, nor shall it be sprayed by a powerful jet of water
in order to avoid destroying 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-phase electric pump needs equip with overload protection device, it is necessary to choose the
matched one according 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 overload.
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 valve or the lower
end of intake pipe out of water.
13). During the operation, if user wants to adjust the electric pump position or touch it, firstly cut off
the power supply to avoid accident.
14). In order to avoid accidents, swimming, washing, herding nearby the working space of electric
pump are forbidden.
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 the electric pump is to remain 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 pipes must always be fitted using the related 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 clean 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 bottom
of pump body, making sure you prime it when subsequently starting it again; check that the foot valve is
clean at regular intervals; 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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