Faults & Solutions

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Faults & Solutions

Color Sorter Common faults and treatment methods 
Thank you for using our products. This machine has a fault self-test function, and the fault alarm indicates that the fault may be severely exceeded when the color picker is under load. If the machine fails, please use the method described in the following table to eliminate it. If you can't eliminate it, please inform the after-sales service department of the company immediately, and the general fault users can eliminate it by themselves.
Common faults and their processing solutions are as follows
Cause of issue Solution
Ejector Air Leak Foreign matter or
damage inside the Ejector
Temperature below 5 °
There is water vapor in
the Ejector
When the ejector is in normal operation,
there is a certain requirement for the flowing
air. If the air contains moisture or too many
other magazines, the ejector will leak. Color
sorting when the ejector is leaking will result
in a decrease in the color sorting effect and
affect the stability of the air path. Once there
is a leak in the ejector, it indicates that the
ejector has been damaged by the customer. It
is necessary to contact the after-sales service
department of the company to send a
professional to replace the damaged ejector.
Ejector no action Poor contact between
the ejector plug and the
ejector seat
Ejector Coil Broken
Ejector PCB Broken
There are several reasons for the valve
no action. The customer can remove the fault
step by step according to the following steps.
First, check the connection of the ejector
circuit. If there is any connector
disconnection, please disconnect the whole
power supply of the machine, re-connect it
and then turn on to check for the possibility
of malfunction due to poor contact between
the ejector connector and the ejector base.
In the case of normal connection, it is
necessary to detect the failure of the ejector drive circuit (including the fuse on the circuit
board), and strictly observe the safety of the
operation when you check it yourself. You
can also contact the after-sales service
department of the company to send a
professional check and repair.
Ejector Low Air
Ejector Nozzle no
air out
Air pressure is too low Check if the working pressure of the
color sorter is normal
Check if the pneumatic line switch is
Material Bouncing
on chute
The chute is scratched
High temperature of
the material
chute dust
Bouncing will cause the color sorting
effect to decrease. Generally, the new
commissioning machine material bouncing,
please check the chute for paint or scratch
first. Then check whether the heating device
is turned on. If it is not turned on, first turn on
the heating device preheating chute for 20-30
minutes. We can also check for dust
agglomeration on the chute. If there is any,
please refer to the instructions in the front
dust cleaning to clean the chute.
Color sorting
quality is getting worse
Dust on the glass
before and after sorting
inside the room to block the
Sensitivity, background
plate, and flow rate change
There are many reasons for this, and we
need to check them one by one.
First of all, we need to check whether
the cleaning device is normal, and then check
whether the raw material has a large change.
If there is a large impurity change, the color
selection parameter needs to be re-adjusted.
No sorting Sensitivity setting is
too low
Control system
parameters change or
Background board
setting is not proper
First of all, we can check the color
sorting plan and the relevant parameters of
the whole machine with reference to the color
sorter front panel led indicators and the
abnormal operation of the ejectors.
After excluding the above reasons, there
may be some problems with the control circuit board. If it is difficult to discharge by
yourself, please feel free to contact the
after-sales service department of the company
to send a professional.
Rodless cylinder
sliding blocked
There is resistance in
First check if there is too much ash on
the rodless cylinder. If it is, use a rag to clean
it with alcohol. Then check the surface for
damage, and close the air, push the brush
with your hand. If you still can't move it, you
need to contact the after-sales engineer for

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