customer service-Huiyuan electromechanical

Technical support

Precautions

Direct current pump
Shielded circulating pump
Deep well pump
Sewage pump
Clean Water Submersible Pump
Garden Pump
Clean Water Pump for domestic
Automatic booster pump

1.The pump should be installed the place where is convenient for repairing and changing.b.The pump should be installed in a covered place,
2.The pump should be installed with the shaft in horizontal plane ,inversion and vertical installation is not allowed.
3.The arrowhead on the pump must be the same as the fluid direction.
4.The pump must be installed in firm ground,and must befitted with creepage protector.f.The pump must used within the rated voltage range.
5.The pump is water lubricated,dry working is not allowed.
6.The cable in the terminal box must have radian,to prevent outside water coming in along the cable.
7.lf this product is used in home,please take measure to prevent humidity or water drop to wood floor or other goods that easy to destroy by humidity or water.
8.When this product is used in heating system,please don't touch,avoiding scalding.The cable can bear high temperature.
9.The rotating direction of this pump is confirmed,every time after repairing the pumps,please make sure the to keep the direction as before.
10.Please don't cover this pump with blanket or other similar goods,keep air circulating,avoiding firing.
Read instruction carefully before installation. Installation of power and pipe fit the local and international code. All metal pipe and electrical machinery must have ground wire. All ground wire not less than electrical cable's standard. The outside power wire must thicker than electrical machinery power guiding wire. The interface must be sealing airtight. Use the rate voltage.If the voltage change, electrical machinery stop working. To reduce danger of power shock,don't connect power wire at work or in the water. No use pump in swimming area.
1. The maximum deep is allowed in water is 5m from its center of impeller;
2. The trans medium’s temperature shouldn’t be higher than 40℃
3. Trans medium’s PH:4-10;
4. Kinematics viscosity of the trans mediums:7X10-23X10 m³/s;
5. Density cf the trans medium limit:1.2X10³kg/m²
1. Each electric pump should be with grounding sign, and be properly grounded. It should be installed leakage protector in the power supply circuit.
2.Do not pull the cable (power cable) forcefully, avoid leakage due to the cable breakage.3.Do not touch it when pump is powered on. During use, do not wash, swim, or put live stock in the water near the working area. Be aware of accidents.
4.Switch-off power supply firstly, if the pump requires maintenance or cleaning etc.5.Be sure to read the instruction carefully before operating the pump.
Safety matters
1. Forbidden to use wet hands and feet to push knife switch , pull the button, connect the cable or put the connector in wet place.
2.Should be properly grounded.
3.Put a warning board " Prevent electric shock" near the pump, after is is installed. During use, do not wash, swim, or put livestock in the water near the working area
4.No matter what happens on electric pump, must be cut off the power supply, then check it to avoid accidents.
5.Check the motor winding regularly with a 500v megohmmeter. The insulation resistance to ground shall not be less than 50M9, or need to be stopped and repair.
Attention!
(Important for your own security) Before starting to run your new submersible pump,please having the following items checked by an expert:Ground connection Zero conductor
Never run the pump empty.If this happens by mistake,switch off pump by earliest possible,let it cool down,and prime it again with clean water,then start for running .To carry any work on the pump,first disconnect it from main supply.
Caution
Never run the pump empty.If this happens by mistake,switch off pump by earliest possible,let it cool sown and prime it again with clean water,then start for running.To carry any work on the pump,first disconnect it from main supply.
1. Grounding wire before use can avoid electric shock caused by abnormal electrical insulation or short circuit of power supply.

For your safety, avoid the danger of electric shock, please pay attention to the power plug do not get wet.

Notes for Grounding Wire:

Connect the grounding wire after closing the power supply.

Do not connect with gas pipe, otherwise it will cause explosion.

2. Avoid using it when it is dry and waterless.

Anhydrous operation will shorten the service life of the pump and cause motor failure.

3. Be careful not to use pumps for liquids other than water

In addition to water, if used in gasoline, gasoline and other flammable liquids, high viscosity liquids and other solvents, there will be fire hazards, shorten the service life of the pump.

5. Avoid using the pump when the ambient temperature exceeds 40C, below - 10C and hot water exceeds 40C. Otherwise, the service life of the pump will be shortened.

6. Avoiding the use of pumps under direct sunlight or rainwater will shorten the service life of pumps.

7. When the pump is installed in a suction well, sand filtration is first needed to prevent impeller damage in a short time, reduce pumping pressure and reduce pumping water volume.

8. The permissible voltage of the pump is +10% of the rated voltage. If it exceeds this range, the service life of the pump will be shortened.

When the pump is used repeatedly for a long time, because of the adhesion and solidification of dirt and dirt in the pump, even if the power supply is connected, the motor may not work. In this case, turn off the power supply, then turn the shaft behind the motor several times with a screwdriver or something similar, and then the pump can be used normally.

Troubleshooting

Automatic booster pump
Clean Water Pump for domestic
Garden Pump
Clean Water Submersible Pump

PROBLEN	REASONS	METHORD
Motor can not start	Thermal protector	If the motor is over heat,it doesn’t operate.Then wait till get cold(20-30 minutes)
	Faulty cord connection	Insert the plug correctly
	Cord disconnection	Replace the cord
	Power supply voltages too low	Confirm the power supply company
	Trouble in motor	Repair or replace the motor
Motor running but does not pump	Water level of wells is lower than standard level	Check the water level of the well
	Air drawn into suction pipe	Check the pipes connection make sure then join perfectly
	Air drawn from mechanical seal	Replace the mechanical seal
Thermal protector for motor works too often	The power supply voltage is too low or too high	Confirm the power supply company
	Impeller connected with another part	Repair the capacitor
	Short or open circuit of the capacitor	Replace the capacitor
Water does not flow	Air drawn into suction pipe	Repair the pipe connection and repair the defects
Pump operated even no water being used	Water leak at piping or pump	Repair piping pump parts and faucets etc.
	Air drawn trough mechanical seal	Repair mechanical seal
	Check valve does not close perfectly	Clean the check valve

PROBLEM	CAUSE	SOLUTION
Pump could not stat	-No power -Impeller stuck	-Check connection and voltage values -Follow maintenance instruction
Motor turns without pumping water	-Clogged filter -Excessive inlet height -Air in	-Clean filter -Move pump close to water inlet level -Check inlet pipe if it is air tight -Make sure foot valve is immersed by at least 50cm -Pump needs to be primed again
Insufficient flow rate	-Inlet height at limit -Filter partially clogged -Impeller blocked	-Check inlet height -Clean foot valve,if necessary the whole inlet pipe -Disassemble pump and carefully clean pump body and impeller
Tripped motor overload cutout	-Over headed motor -Impeller stuck	-Check voltage and ventilation -Release impeller -Follow maintenance instruction

INCIDENTS CAISES REMEDIES	CAUSES	REMEDIES
Pump could not start	-No mains supply -Floater does not switch	-Check mains supply -Bring floater in a higher
Not flow	-Inlet sieve is clogged	-Clean inlet sieve water jet
Pump does not switch off	-Floater can not sink down	-Place pump properly on shaft
Insufficient flow	-Inlet sieve clogged -reduced pumping capacity	-Clean inlet sieve -Clean pump and replace
Pump switches of after short operating period	Thermal cut out stops pumps due to dirty water -Water too hot	-Remove mains plug, -Clean pump and shaft

PROBLEMS	POSSIBLE CAUSE	SOLUTION
Difficult start	1. Two-phase operation:wire disconnection or switch starting device disconnection 2. Voltage too low 3. Bearing stuck 4. Protection switch off phase or trip coil burnout 5. Stator and rotor slightly corroded	1. Repair the line 2. Adjust the voltage 3. Repair or replace bearing 4. Clean away the impurity 5. Change the switch or trip coil 6. Disassemble the pump casing and pull the nut in the positive direction
No water,intermittent water or less water	1. Submerged depth of the pump is too shallow,air may be sucked 2. Water filter plugging 3. Electric pump reversed 4. The water pipe is seriously leaking or the impeller is stuck 5. Motor did not start 6. Water inlet seal ring wear leakage 7. The actual use of head is too high 8. Rotor broken	1. Adjust the pump to 0.5bellow the dynamic water level 2. Clean the filter net 3. Change the joints 4. Replace the pipe or clear the blockage 5. Identify the cause and repair 6. Replace the water section 7. Re-select pump with appropriate head 8. Replace the rotor
Protection switch on and off frequently	1. Electric pump overload 2. Protection switch setting current value is too small 3. Three-phase voltage imbalance 4. Trip coil burned	1. According to the current large to identify the cause,then repair 2. Adjust the setting current properly or change the switch 3. Adjust the power supply voltage 4. Replace trip coil
Current instability or overload	1. Actual use head too low,and flow is too big 2. Water level drops,intermittent water 3. Bearing wear,stator and rotor friction 4. Shaft bending,or upper and end cover is not concentric	1. Adjust the valve to control the flow 2. Adjust the pump to0.5m below the dynamic water level 3. Replace the bearing 4. Straighten or repair
Insulation resistance of motor winding to ground is lower	1. Cable broken or plug loose 2. 2,Joint seal is damaged 3. Electromagnetic wire insulation dropped or damaged	1. Change cable and plug 2. Change the joint seal 3. Change the wining
Intense vibration	1. Motor rotor,pump rotation unbalanced 2. Bearing wear 3. Shaft bending 4. Fastening bolts loose 5. Run without water(refer to QS pump)	1.Adjust balance 1. Change bearing 2. Straighten 3. Tighten the bolts 4. Fill water from the outlet
Winding of motor burned	1. The protection of the device failure,or setting the current value is too large,and the use of current is too large 2. Phase missing rotation 3. The motor is trapped in the sand	1.Repair protection equipment 2.Maintenance lines and related 3.Adjust the position of the electric pump

Sewage pump
Deep well pump
Shielded circulating pump
Direct current pump

PROBLEM	POSSIBLE CAUSE	SOLUTION
Starting difficult	1. Power supply voltage is too low 2. The impeller is stuck 3. The stator winding is broken 4. The capacitors broken 5. Three-phase pumps may be in phase lack 6. The cable voltage drop is oversize	1. Adjusting the supply voltage to 85%-115% range of the rating 2. Fixing the stuck parts 3. Fixing(consulting service provider or a qualified technician) 4. Changing the capacitors(consulting service provider or a qualified technician) 5. Inspecting the switch outlet plugs and so on 6. Choosing the appropriate cable
Water quantity is little	1. The total height is too high 2. The filter screen flushing port is block 3. The impeller is badly worn 4. The depth under water is too shallow;and there may be air in the pump 5. Three-phase pump impeller maybe in rollback	1. Lowering the height 2. Cleaning the sundries around filter screen 3. Replacing impeller 4. Adjusting the depth water 5. Exchange any two phases of the three-phase power
Suddenly stopping	1. The switch is disconnect or the fuse is burned-put 2. Impeller is stuck 3. The stator winding is burning-put	1. Checking whether the switch is disconnect or replacing the fuse 2. Cutting off power supply and clearing the sundries 3.Fixing(consulting service provider or a qualified technician)

PROBLEM	POSSIBLE CAUSE	REMEDY
Start or run big power or trip	1. No power or absent phase 2. Wire too long and thin. Quick falling pressure or voltage 3. Contract set break or hot relay trip(red light on). 4. Power wire as EM wire wire bead or loose or absent phase 5. Electrical machinery break 6. Something is in the impeller of the pump	1. Check power rule out the absent phase 2. Offer big cable and high voltage. 3. Check or change contract set after the hot relay cooler. Remove with hand. 4. Check the wire and connect it 5. Fix electrical machinery or change it. 6. Clear dirty things. .
No water or flow Power big or small	1. Reverse. 2. High lift than the fact. 3. The mouth is blocked up no water. 4. Pipe block up or break. 5. Impeller wear and tear. 6. Connect-bearing set broken or loose 7. No-back valve choke.	1.Change power or the joint of the cable two-phase. 2. Readjust the lift 3. Clear block things. 4. Clear block things. Fix the break. 5. Change the impeller. 6.Change connect-bearing set. 7. Change no-back valve.
Flow big or small Sometimes (right power)	1. Big flow, no enough water. 2. Pump is not put down enough. No enough water. 3. Water level is too low to reach the pump mouth.	1. Change the right flow pump. 2. Put the pump down enough. 3. Limit flow or readjust the depth of the pump. .
Automatic gear shift is in order but hand gearshift is not	1.Automatic water level electrode bad tough or break. Ground-wire is wrong or bad-tough 2. Automatic electrode break	1. Check water level electrode change wire. 2. Fix or change control-case
Start but too often	1. Well, tower's electrode's wire break or loose. 2. The distance between up and down water level electrode is near. 3. Install opposite the up and down water level electrode.	1. Check and fix. 2. Make the distance long. 3. Readjust the electrode wire
Hot relay in order but tip when it touch	1. Power absent-phase(near the control case) 2. The EM wire bad touch or break	1. Check and rule out absent phase. 2. Check and fix the cable.
Pump work in order but no voltage and pilot lamp show	1. Voltmeter's wire bad touch or break. 2. Pilot lamp's wire bad touch or break	1. Check and tight the joint or change the voltmeter. 2. Check and fix or change.

PROBLEM	POSSIBLE CAUSE	SOLUTION
Motor don’ t rotate	Power supply	Check fuse and electric connection
	The pump don’t rotate	Dismantle the vent screw,rotate the rotor with the screwdriver
	The impeller block	Eliminate the impurity
	The voltage is too low	Adjust the voltage
	The capacitor is broken	Change the capacitor
Motor rotates normally,the pump can’t pump water	The water level is lower than the normal level	Check the level and heighten the water level
	Air come in the pipe	Repair pipe(prevent air come in)
	The impeller inlet port has impurity	Eliminate the impurity from the impeller
Automatic device can’t work	There is impurity in the automatic switch or rust jam	Dismantle and clean it
	There is hole in the pipe	Repair the pipe
	The pressure in the pump inlet port is too low	Install the pump near the water source
	The automatic parts react too slow	Fix a check valve on the inlet port
	Pump or the pipe leak	Repair the pump or the pipe
There is noise when the pump working	There is air in the pump or the pipe	Open the faucet and let the pump working several minutes and deflating
	Air vent in the system	Increase system pressure within permissible limits
	Check the automatic switch	Reduce the pump speed if it is necessary

Direct current pump
Shielded circulating pump
Deep well pump
Sewage pump
Clean Water Submersible Pump
Garden Pump
Clean Water Pump for domestic
Automatic booster pump

PROBLEM	POSSIBLE CAUSE	SOLUTION
Motor don’ t rotate	Power supply	Check fuse and electric connection
	The pump don’t rotate	Dismantle the vent screw,rotate the rotor with the screwdriver
	The impeller block	Eliminate the impurity
	The voltage is too low	Adjust the voltage
	The capacitor is broken	Change the capacitor
Motor rotates normally,the pump can’t pump water	The water level is lower than the normal level	Check the level and heighten the water level
	Air come in the pipe	Repair pipe(prevent air come in)
	The impeller inlet port has impurity	Eliminate the impurity from the impeller
Automatic device can’t work	There is impurity in the automatic switch or rust jam	Dismantle and clean it
	There is hole in the pipe	Repair the pipe
	The pressure in the pump inlet port is too low	Install the pump near the water source
	The automatic parts react too slow	Fix a check valve on the inlet port
	Pump or the pipe leak	Repair the pump or the pipe
There is noise when the pump working	There is air in the pump or the pipe	Open the faucet and let the pump working several minutes and deflating
	Air vent in the system	Increase system pressure within permissible limits
	Check the automatic switch	Reduce the pump speed if it is necessary

PROBLEM	POSSIBLE CAUSE	REMEDY
Start or run big power or trip	1. No power or absent phase 2. Wire too long and thin. Quick falling pressure or voltage 3. Contract set break or hot relay trip(red light on). 4. Power wire as EM wire wire bead or loose or absent phase 5. Electrical machinery break 6. Something is in the impeller of the pump	1. Check power rule out the absent phase 2. Offer big cable and high voltage. 3. Check or change contract set after the hot relay cooler. Remove with hand. 4. Check the wire and connect it 5. Fix electrical machinery or change it. 6. Clear dirty things. .
No water or flow Power big or small	1. Reverse. 2. High lift than the fact. 3. The mouth is blocked up no water. 4. Pipe block up or break. 5. Impeller wear and tear. 6. Connect-bearing set broken or loose 7. No-back valve choke.	1.Change power or the joint of the cable two-phase. 2. Readjust the lift 3. Clear block things. 4. Clear block things. Fix the break. 5. Change the impeller. 6.Change connect-bearing set. 7. Change no-back valve.
Flow big or small Sometimes (right power)	1. Big flow, no enough water. 2. Pump is not put down enough. No enough water. 3. Water level is too low to reach the pump mouth.	1. Change the right flow pump. 2. Put the pump down enough. 3. Limit flow or readjust the depth of the pump. .
Automatic gear shift is in order but hand gearshift is not	1.Automatic water level electrode bad tough or break. Ground-wire is wrong or bad-tough 2. Automatic electrode break	1. Check water level electrode change wire. 2. Fix or change control-case
Start but too often	1. Well, tower's electrode's wire break or loose. 2. The distance between up and down water level electrode is near. 3. Install opposite the up and down water level electrode.	1. Check and fix. 2. Make the distance long. 3. Readjust the electrode wire
Hot relay in order but tip when it touch	1. Power absent-phase(near the control case) 2. The EM wire bad touch or break	1. Check and rule out absent phase. 2. Check and fix the cable.
Pump work in order but no voltage and pilot lamp show	1. Voltmeter's wire bad touch or break. 2. Pilot lamp's wire bad touch or break	1. Check and tight the joint or change the voltmeter. 2. Check and fix or change.

PROBLEM	POSSIBLE CAUSE	SOLUTION
Starting difficult	1. Power supply voltage is too low 2. The impeller is stuck 3. The stator winding is broken 4. The capacitors broken 5. Three-phase pumps may be in phase lack 6. The cable voltage drop is oversize	1. Adjusting the supply voltage to 85%-115% range of the rating 2. Fixing the stuck parts 3. Fixing(consulting service provider or a qualified technician) 4. Changing the capacitors(consulting service provider or a qualified technician) 5. Inspecting the switch outlet plugs and so on 6. Choosing the appropriate cable
Water quantity is little	1. The total height is too high 2. The filter screen flushing port is block 3. The impeller is badly worn 4. The depth under water is too shallow;and there may be air in the pump 5. Three-phase pump impeller maybe in rollback	1. Lowering the height 2. Cleaning the sundries around filter screen 3. Replacing impeller 4. Adjusting the depth water 5. Exchange any two phases of the three-phase power
Suddenly stopping	1. The switch is disconnect or the fuse is burned-put 2. Impeller is stuck 3. The stator winding is burning-put	1. Checking whether the switch is disconnect or replacing the fuse 2. Cutting off power supply and clearing the sundries 3.Fixing(consulting service provider or a qualified technician)

PROBLEMS	POSSIBLE CAUSE	SOLUTION
Difficult start	1. Two-phase operation:wire disconnection or switch starting device disconnection 2. Voltage too low 3. Bearing stuck 4. Protection switch off phase or trip coil burnout 5. Stator and rotor slightly corroded	1. Repair the line 2. Adjust the voltage 3. Repair or replace bearing 4. Clean away the impurity 5. Change the switch or trip coil 6. Disassemble the pump casing and pull the nut in the positive direction
No water,intermittent water or less water	1. Submerged depth of the pump is too shallow,air may be sucked 2. Water filter plugging 3. Electric pump reversed 4. The water pipe is seriously leaking or the impeller is stuck 5. Motor did not start 6. Water inlet seal ring wear leakage 7. The actual use of head is too high 8. Rotor broken	1. Adjust the pump to 0.5bellow the dynamic water level 2. Clean the filter net 3. Change the joints 4. Replace the pipe or clear the blockage 5. Identify the cause and repair 6. Replace the water section 7. Re-select pump with appropriate head 8. Replace the rotor
Protection switch on and off frequently	1. Electric pump overload 2. Protection switch setting current value is too small 3. Three-phase voltage imbalance 4. Trip coil burned	1. According to the current large to identify the cause,then repair 2. Adjust the setting current properly or change the switch 3. Adjust the power supply voltage 4. Replace trip coil
Current instability or overload	1. Actual use head too low,and flow is too big 2. Water level drops,intermittent water 3. Bearing wear,stator and rotor friction 4. Shaft bending,or upper and end cover is not concentric	1. Adjust the valve to control the flow 2. Adjust the pump to0.5m below the dynamic water level 3. Replace the bearing 4. Straighten or repair
Insulation resistance of motor winding to ground is lower	1. Cable broken or plug loose 2. 2,Joint seal is damaged 3. Electromagnetic wire insulation dropped or damaged	1. Change cable and plug 2. Change the joint seal 3. Change the wining
Intense vibration	1. Motor rotor,pump rotation unbalanced 2. Bearing wear 3. Shaft bending 4. Fastening bolts loose 5. Run without water(refer to QS pump)	1.Adjust balance 1. Change bearing 2. Straighten 3. Tighten the bolts 4. Fill water from the outlet
Winding of motor burned	1. The protection of the device failure,or setting the current value is too large,and the use of current is too large 2. Phase missing rotation 3. The motor is trapped in the sand	1.Repair protection equipment 2.Maintenance lines and related 3.Adjust the position of the electric pump

INCIDENTS CAISES REMEDIES	CAUSES	REMEDIES
Pump could not start	-No mains supply -Floater does not switch	-Check mains supply -Bring floater in a higher
Not flow	-Inlet sieve is clogged	-Clean inlet sieve water jet
Pump does not switch off	-Floater can not sink down	-Place pump properly on shaft
Insufficient flow	-Inlet sieve clogged -reduced pumping capacity	-Clean inlet sieve -Clean pump and replace
Pump switches of after short operating period	Thermal cut out stops pumps due to dirty water -Water too hot	-Remove mains plug, -Clean pump and shaft

PROBLEM	CAUSE	SOLUTION
Pump could not stat	-No power -Impeller stuck	-Check connection and voltage values -Follow maintenance instruction
Motor turns without pumping water	-Clogged filter -Excessive inlet height -Air in	-Clean filter -Move pump close to water inlet level -Check inlet pipe if it is air tight -Make sure foot valve is immersed by at least 50cm -Pump needs to be primed again
Insufficient flow rate	-Inlet height at limit -Filter partially clogged -Impeller blocked	-Check inlet height -Clean foot valve,if necessary the whole inlet pipe -Disassemble pump and carefully clean pump body and impeller
Tripped motor overload cutout	-Over headed motor -Impeller stuck	-Check voltage and ventilation -Release impeller -Follow maintenance instruction

PROBLEN	REASONS	METHORD
Motor can not start	Thermal protector	If the motor is over heat,it doesn’t operate.Then wait till get cold(20-30 minutes)
	Faulty cord connection	Insert the plug correctly
	Cord disconnection	Replace the cord
	Power supply voltages too low	Confirm the power supply company
	Trouble in motor	Repair or replace the motor
Motor running but does not pump	Water level of wells is lower than standard level	Check the water level of the well
	Air drawn into suction pipe	Check the pipes connection make sure then join perfectly
	Air drawn from mechanical seal	Replace the mechanical seal
Thermal protector for motor works too often	The power supply voltage is too low or too high	Confirm the power supply company
	Impeller connected with another part	Repair the capacitor
	Short or open circuit of the capacitor	Replace the capacitor
Water does not flow	Air drawn into suction pipe	Repair the pipe connection and repair the defects
Pump operated even no water being used	Water leak at piping or pump	Repair piping pump parts and faucets etc.
	Air drawn trough mechanical seal	Repair mechanical seal
	Check valve does not close perfectly	Clean the check valve

Maintaining

Direct current pump

Direct current pump
Shielded circulating pump

Shielded circulating pump

Auto-switch maintenance If there is impurity in the automatic switch or rust jam causes automatic switch can’t work,please use the following measure to solve the problems Must cut off the power before repairing the automatic switch
Deep well pump

Deep well pump

The following condition, stop and check. 1.Correct voltage, but power is over the rate. 2. Certain lift but flow smaller. 3. Pump run, shaking and noisy. 4.The protect switch often trip. 5. The cable(connect with the electrical machinery)centre to case(ground). Insulator resistance is less than 0.5 mega ohm. 6. If mud and sand too much. After using half a year. Pull the pump to check and wash the impeller.
Sewage pump

Sewage pump

1.Examine the power link constantly.If there are breakages or scratches,replace it Without delay. 2.After normally operating 2,000 hours,the pump should be kept in repair and maintaining by following procedures: Demounting: Examine every component which is easy to be broken,such as,deep groove ball bearings,mechanical seals.Framework oil seal,the O-rings of all parts.Exchanging oil:screw the oi-filling off bolt outside the hydro-cylinder,and then fill with 10# machinery oil to the 70%-80% of the container. (The10#machinery oil can be replaced by edible peanut oil ) Gas-pressure test: After demounting to repair or changing seal ring,it is necessary to do gas-pressure test.The pressure in test should be 0.2 MPa and there shouldn't be leaking and cutting in five minutes. 3.If the pump would not be used for a long time,it shouldn't be soaking in water.The correct way is operating several minutes in clean water,rubbing it to dry and do some anti-rusted disposing.
Clean Water Submersible Pump

Clean Water Submersible Pump

1. If the electric pump not used for a long time,, it should be run in clean water for a few minutes and clean mud both inside and outside pump. Remove the pipes and joints, drain the water in the pump, and put it in a dry and ventilated place. 2. Disassembly the bearing chamber every 2000 hours of operation, to replace the grease.3. Pay attention to cleaning the inlet and outlet regularly to prevent clogging and prevent filter damage. 4. Be careful to carry and install the electric pump to prevent the damage of pump body,motor housing, and to prevent to damage of cable(power cord) 5. If the pump not used for a long time, it should be tested before installing , if not start,generally due to long-time no use of the shaft, rotating parts stuck cause of corrosion , must be repaired after exclusion, then can re-use.
Garden Pump

Garden Pump

This submersible pump is an approved and maintenance-free high quality product.which is subject to server final controls.We recommend,regular inspection and maintenance to be sure long equipment life and uninterrupted operation.
Clean Water Pump for domestic

Clean Water Pump for domestic

When there is risking of freezing,empty the pump through the drain plug on bottom of the pump body.When ambient temperature becomes favorable,prime it again and start.Clean the foot valve at regular intervals.If the pump is to remain unused for long.It is advisable to make it empty completely,rinse it with clean water and store a dry place.If the shaft does not turn freely,release it using a screw driven inserting in the special slot.If is not sufficient to resolve the problem,remove the body,undo the mounting bolt,and clean it to remove any encrustation.
Automatic booster pump

Automatic booster pump

When the pump is repeatedly used for a long time, because the dirt and dirt in the pump stick and solidify, even if the power supply is connected, the motor may not work. In this case, turn off the power supply, and then use a screwdriver or something similar to turn the shaft behind the motor several times, then the pump can be used normally.