In case of malfunction, please check below before contacting us.

KDS Separator : Troubleshooting

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Abnormal noise
KDS Separator stopped working

Polymer Preparation System : Troubleshooting

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Alterations in or abnormal solution concentration
Abnormal indication on a control panel of Polymer Preparation System

Other system troubleshooting

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Abnormal noise or vibration of devices
Devices stopped working

KDS Separator : Troubleshooting (See all)

KDS Separator : Troubleshooting(Abnormal noise)

KDS Separator : Troubleshooting(KDS Separator stopped working)

Polymer Preparation System : Troubleshooting (See all)

Polymer Preparation System : Troubleshooting (Alterations in or abnormal solution concentration)

Polymer Preparation System : Troubleshooting (Abnormal indication on a control panel of Polymer Preparation System)

Other system troubleshooting(See all)

Other system troubleshooting(Abnormal noise or vibration of devices)

Other system troubleshooting(Devices stopped working)

For continuous noise

Please check the filter screen of KDS Separator.
Turn off the main power supply and wash the screen.

In case the problem is not solved after washing

there is a possibility that fixed slits, oval plates or rotating shaft may be broken. Please contact us.

Please check before contacting us :
1. If a sprocket is out upward of horizontal line of others
2. Observing from the discharge chute, if rows of oval plates are horizontal to fixed slits.

For sporadic noise (KDS Separator is working)

Please check where the noise is from and follow the steps below.

If the noise is from driving parts such as chains and sprockets, except a motor

please check the current value on control panel VFD (variable frequency drive) and compare it with the value at shipment inspection.
Please check if grease is adequately applied on the chain. If not, please apply.

- In case the problem is not solved,
there is a possibility that driving parts may be broken. Please contact us.
Please check before contacting us :
1. If a sprocket is out upward of horizontal line of others
2. Watching from the discharge chute, if rows of oval plates are horizontal to fixed slits.

If the noise is from a motor

there is a possibility that the motor may be broken. Please contact us.

For intermittent noise(KDS Separator is NOT working)

there is a possibility that driving parts may be broken. Please contact us.
Please check before contacting us :
1. If a sprocket is out upward of horizontal line of others
2. Watching from the discharge chute, if rows of oval plates are horizontal to fixed slits.

[Emergency Stop Lamp (RED) is on]

If the emergency stop switch is pressed down, please release.

[System Stop Lamp (YELLOW) is on]

If the system stop switch is pressed down, please release.

[Abnormal Stop Lamp (RED) is on]

Please check VFD display on the control panel and follow the instruction below.

If an error code is displayed

note the error code and turn off the system completely. Please conduct restoration work for the error.
- Frequent causes of errors
1. OL (overload)
2. on KDS Separator screens
1) adhering of sludge or jamming of sand or fibres
3. Abnormal stops of KDS Separator driving parts
1) chain breakages due to corrosion
2) an abnormal phase of sprockets due to wearing

No indication on VFD display

There is a possibility that VFD may be broken. Please contact us.

A system does not eject flocculant (powder type)

Please check below.

A flocculant hopper is empty

Please feed flocculant (Please wear safety goggles and gloves).
In case the problem is not solved, the device may need readjustment. Please contact us.

If a flocculant eject opening is filled up.

Please remove the cause of the blockage. (Please wear safety goggles and gloves) In case the problem is not solved, the device may need readjustment. Please contact us.

Malfunctions of a feeder or a hopper mixing motor

Please contact us.

Water for dissolving flocculant does not eject or too little.

Please check below.

Water supply is too little.

Installation of additional cushion tanks and/or pressure pumps is required. Please contact us.

A water supply pipe is filled up.

Please remove the cause of the blockage. (Please wear safety goggles and gloves) In case the problem is not solved, the device may need readjustment. Please contact us.

A water supply pipe is filled up.

Please turn off the system and remove the cause of the blockage.
In case the problem is not solved, the device may need readjustment. Please contact us.

Flocculant continuously comes out from a powder eject opening

Please contact us.

[Emergency Stop Lamp (RED) is on]

If the emergency stop switch is pushed down, please release it.

[Abnormal Stop Lamp (RED) is on]

Please check VFD display.

If an error code is displayed

note the error code and turn off the system completely. Please conduct restoration work for the error.

No display

There is a possibility that VFD may be broken. Please contact us.

Normal display

Please check the electromagnetic switch and turn off the system completely. Then, conduct restoration work for the error.
After the restoration work, please try resetting the electromagnetic switch.

[Dissolution Tank Water Shortage Lamp is on]

The water level is as low as shortage level. Please check below.

- Please check the water level.
- Please check if there is adhesive material on the electrode sensor.
- Please check if the solenoid valve of water supply is working (checked by control panel manual switch). In case the valve is not working, please contact us.

[Dissolution Tank Full-Water Lamp is on]

The water level is as high as full-water. Please check below.

- Please check the water level.
- Please check if there is adhesive material on the electrode sensor.
- Please check if the solenoid valve of solution supply is working (checked by control panel manual switch). In case the valve is not working, please contact us.
- Please check the polymer pump.

Flocculation Tank Mixer (Overload)

Please check VFD display on the control panel.

If an error code is displayed

note the error code and turn off the system. Please conduct restoration work for the error.

No display

There is a possibility that VFD may be broken. Please contact us.

Normal display

Check the electromagnetic switch. If 〇〇, turn off the system and conduct restoration work for the error.

Flocculation Tank Mixer (motor failure)

Please contact us.

E1 polymer supply pump (does not supply solution)

Please check below.

Check if any parts, such as an impeller, are worn out,

Please turn off the main power supply and replace the worn part (refer to Instruction Manual). In case the problem is not solved after replacing the part, please contact us.

Pump failure

Please contact us.

Raw water supply pump (does not supply raw water)

Turn off the main power supply and remove foreign substance/blockage.
In case the problem is not solved, please contact us.

Pump failure

Please contact us.

[Emergency Stop Lamp (RED) is on]

If the emergency stop switch is pushed down, please release.
In case it does not resume operation, please contact us.

[System Stop Lamp (YELLOW) is on]

If the system stop switch is pushed down, please release.
In case it does not resume operation, please contact us.

[Abnormal Stop Lamp (RED) is on, Patlite is on]

Please check VFD display on the control panel.

If an error code is displayed,

note the error code and turn off the main power supply. Please conduct restoration work for the error.
- Frequent causes of errors
1. OL (overload)
2. on KDS Separator screens
1) adhering of sludge or jamming of sand or fibres
3. Abnormal stops of KDS Separator driving parts
1) chain breakages due to corrosion
2) an abnormal phase of sprockets due to wearing

In case it does not resume operation, please contact us.

No display

There is a possibility that the VFD may be broken. Please contact us.

Normal display

Turn off the main power supply and conduct restoration work for the error. Then, reset the electromagnetic switch.

In case it does not resume the operation, please contact us.

[KDS Separator Full-Water Lamp is on]

If water level is as high as full-water,

check how long KDS separator has stopped.
In case it does not resume operation, please contact us.

If water level is NOT as high as full-water,

the water level sensor may be malfunctioning. Please remove foreign substance on the water level sensor.
In case it does not resume operation, please contact us.

[Water Shortage Lamp is on, due to low water level in raw water tank]

If the raw water is as low as shortage level,

it will resume operation automatically after the water shortage state is resolved. Please wait for it.
In case it does not resume operation, please contact us.

If the raw water is not as low as shortage level,

there is a possibility that the float switch, for water level detection, may be broken. Please contact us.

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