Q&A

 

QUALITY OF LIFE

 

  plastic &

rubber  

industry  

Drying & Dehumidifying System

◆ Hopper Dryer

1.Temperature is NOT going up or did not reach required value.


Ans.: 1. Check if there is any air leakage of unit. 2. Check if Fan motor is running in correct direction and if the Iron net is stocked. 3. Check if Heater and thermocouple is ok, and use Device to get Electrical current value. 4. Check if there is resin gathering around Right side of unit and inside dust collector chamber. 5. Check if Contactors, temperature controllers, EGO, and Thermocouple is OK.




2.Material was not dried completely.


Ans.: 1-1 Check Air volume of Fan Motor from its 90 degrees Outlet port.
1-2 Check if Electrical current and resistance of Heater is Normal.
1-3 Check if Both Temperature Indicators, Up and down, share Same value. And also check if Frequency of ON/OFF is Normal.
1-4 Check if there is Spreader Cone inside Drying Chamber of unit.
2. Hopper Dryer is NOT Fulfilled with Material.
3. Check if there is any air leakage of the unit.
4. If possible, please try another brand of Material to check if our unit is working OK.
4-1Setting temperature is not High enough, please increase it. ( For example, ABS sets at 80℃, try to increase to 85℃, 90℃, and so on. and Ensure Material is not gathering together cause of High Temperature.)
4-2 Drying time may be Not long enough, please increase drying time.
4-3 Special Material, pellet is tiny and dense, we would suggest to have a special device to ensure material is dried completely and loading in orders.




3.Fan Motor is Faulty.


Ans.: 1. Check if Capacitors and Wiring are Burned.
2. Check if Voltage of Factory is Normal and Stable. This is because Differences between 3 Phases of Voltage would also damage the unit.




4.Electric leakage


Ans.: Check if Wirings of Fan Motor, Heater, and inside control box are in good condition, not damaged or peeled, because this would lead Electric to steel cover to cause Electric leakage.




5.Temperature is Going up and down in Huge differences.


Ans.: Set Temperature to do Automatic calculation or Adjust PID value manually.




6. Thermocouple is faulty.


Ans.: You would see ① Indicator of SB is ON and ② Displayed FFF or - -




7.Temperature keeps going UP and not stopping.


Ans.: Positive and Negative Pole of Thermocouple are not connected correctly.
Positive Pole connects RED wires.
Negative Pole connects BLUE wires.




8.No Temperature.


Ans.: Check if Power cable is damaged or broken.
Motor overload protector triggered.




9.Smoke from Heater.


Ans.: 1.Check if Switch of Fan Motor is connected correctly.
2.Check if lack phase of Motor. Lack phase of Motor would lead Motor is Not Running although switch of Fan Motor is ON. And Heating is ON to lead smoke.




10.Indicators are OFF.


Ans.: 1. EGO protector triggered.
2. OP protector triggered.
3. Replace with New lamps.





◆ Dehumidifying Dryer

1.Unable to dehumidify. (Unstable dew-point)


Ans.: 1. Check both of Dehumidifying dryer and Hopper dryer if they are suitable.
2. Check both of DHM (DHC) and HD if they have air leakage.
3. Check if the raw material contains oil or added.
4. The function of desiccant and honey comb rotor is unstable for dehumidify or regeneration.
5. Evaporator blocked, heating element fault or regeneration temperature is too low.




2.Rotation error.


Ans.: Check the spares of PU-TR, timer 60M x 12S, PU-NC, SENSOR, compressor air source…etc. Check it step by step to solve the failure.




3.Overheat


Ans.: It may EGO error or breakdown. Thermal bar poor assembling and poor contact causes overheat of temperature controller and SSR failure.




4.Regeneration temperature unstable.


Ans.: To replace temperature controller, auto computing and adjust PID.




5.High temperature of regenerative air.


Ans.: Check cooling water, filter, evaporator and cooler.





Loading & Conveying System

◆ Auto Vacuum Loader

1.Unable or less / little to suction.


Ans.: 1. Adjust the air damper of stainless suction probe.
2. Clean or replace the paper filter.
3. Check the air hose of auto-loader is whether damaged.
4. Examine the limit switch, contactor overload, timer, and motor running well or damage.
5. The belt of blower for TC-6 Loader is loosen or broken.
6. Check the tube or material hose is plugged.
7. Power insufficient.




2.TAE SERIES – unable to start. (normal operation)


Ans.: IC board malfunction to cause the line. # ③ & ④ discounted.
PS. OL – Motor overload, PS - no carbon brush.




3.TAF SERIES – suction material only once.


Ans.: Check the Limit Switch disconnected.




4.TAF can power on but no START function.


Ans.: IC board or buzzer breakdown to cause the IC board malfunction.




5.The hoper do suction material but be unable falling down material.


Ans.: 1.If suction hopper equipped on the hopper dryer and find the plugged of air outlet of hopper dryer, cause the material is unable to fall by pressure increasing.
2.Happen the static. (must do grounding)
3.Find the bridge or suction full of material in the suction hopper. (please reserve enough space)





Dosing & Mixing System

◆ Hopper Dryer

1.Temperature is NOT going up or did not reach required value.


Ans.: 1. Check if there is any air leakage of unit. 2. Check if Fan motor is running in correct direction and if the Iron net is stocked. 3. Check if Heater and thermocouple is ok, and use Device to get Electrical current value. 4. Check if there is resin gathering around Right side of unit and inside dust collector chamber. 5. Check if Contactors, temperature controllers, EGO, and Thermocouple is OK.




2.Material was not dried completely.


Ans.: 1-1 Check Air volume of Fan Motor from its 90 degrees Outlet port.
1-2 Check if Electrical current and resistance of Heater is Normal.
1-3 Check if Both Temperature Indicators, Up and down, share Same value. And also check if Frequency of ON/OFF is Normal.
1-4 Check if there is Spreader Cone inside Drying Chamber of unit.
2. Hopper Dryer is NOT Fulfilled with Material.
3. Check if there is any air leakage of the unit.
4. If possible, please try another brand of Material to check if our unit is working OK.
4-1Setting temperature is not High enough, please increase it. ( For example, ABS sets at 80℃, try to increase to 85℃, 90℃, and so on. and Ensure Material is not gathering together cause of High Temperature.)
4-2 Drying time may be Not long enough, please increase drying time.
4-3 Special Material, pellet is tiny and dense, we would suggest to have a special device to ensure material is dried completely and loading in orders.




3.Fan Motor is Faulty.


Ans.: 1. Check if Capacitors and Wiring are Burned.
2. Check if Voltage of Factory is Normal and Stable. This is because Differences between 3 Phases of Voltage would also damage the unit.




4.Electric leakage


Ans.: Check if Wirings of Fan Motor, Heater, and inside control box are in good condition, not damaged or peeled, because this would lead Electric to steel cover to cause Electric leakage.




5.Temperature is Going up and down in Huge differences.


Ans.: Set Temperature to do Automatic calculation or Adjust PID value manually.




6. Thermocouple is faulty.


Ans.: You would see ① Indicator of SB is ON and ② Displayed FFF or - -




7.Temperature keeps going UP and not stopping.


Ans.: Positive and Negative Pole of Thermocouple are not connected correctly.
Positive Pole connects RED wires.
Negative Pole connects BLUE wires.




8.No Temperature.


Ans.: Check if Power cable is damaged or broken.
Motor overload protector triggered.




9.Smoke from Heater.


Ans.: 1.Check if Switch of Fan Motor is connected correctly.
2.Check if lack phase of Motor. Lack phase of Motor would lead Motor is Not Running although switch of Fan Motor is ON. And Heating is ON to lead smoke.




10.Indicators are OFF.


Ans.: 1. EGO protector triggered.
2. OP protector triggered.
3. Replace with New lamps.





◆ Dehumidifying Dryer

1.Unable to dehumidify. (Unstable dew-point)


Ans.: 1. Check both of Dehumidifying dryer and Hopper dryer if they are suitable.
2. Check both of DHM (DHC) and HD if they have air leakage.
3. Check if the raw material contains oil or added.
4. The function of desiccant and honey comb rotor is unstable for dehumidify or regeneration.
5. Evaporator blocked, heating element fault or regeneration temperature is too low.




2.Rotation error.


Ans.: Check the spares of PU-TR, timer 60M x 12S, PU-NC, SENSOR, compressor air source…etc. Check it step by step to solve the failure.




3.Overheat


Ans.: It may EGO error or breakdown. Thermal bar poor assembling and poor contact causes overheat of temperature controller and SSR failure.




4.Regeneration temperature unstable.


Ans.: To replace temperature controller, auto computing and adjust PID.




5.High temperature of regenerative air.


Ans.: Check cooling water, filter, evaporator and cooler.





Cooling & Heating System

◆ Mold Temperature Controller

1.The heating temperature is unable to raise or reach up to pre-setting temperature value.


Ans.: 1. The tooling / mold pipe lines are plugged, cause the pipeline deposit excessive carbon and block the pipe filter.
2. Improper select wrong mold temperature controller that not meet customer needs.
3. Lack of flow & electricity.
4. Find the fault of heating element, contactor, temperature controller.




2.Pump leaking oil.


Ans.: 1. Find the stuff like as iron filing that stay inside of pipeline to cause the leaking oil.
2. Improper or over usage this unit standard range.




3.Malfunction of cooling.


Ans.: 1. Check the tank shall have sufficient water.
2. Connect correct of cooling water inlet and outlet.
3. Check whether plugged of cooler.
4. Check error of solenoid valve or temperature controller.
5. Regularly clean or replace the filter.




4.The water outlet (to mold) is insufficient for mold.


Ans.: Check the pressure if there is no or insufficient to cause the water flow is short of water outlet to mold.




5. Hot kerosene (oil) emitted.


Ans.: 1. Happen this condition by mixing with oil and water and then heating. Suggest to replace new kerosene (oil) and clean the pipeline. (Be careful to check the water vapor inside of wheel.
2. If air left in the pipeline to cause the kerosene emitted and even burned out the heating element.




6.Burned out of fuse after power on or just starting.


Ans.: Malfunction of cooling fan, temperature controller, buzzer or indicator light leaking electricity to cause the fuse burned out.




7.Over Heat.


Ans.: 1. Find no loop or block or lack of kerosene (oil).
2. Excessive deposition of carbon to cause heating element smoldering.
3. Error of EGO (overheat preventer), spot welding death of contactor, malfunction of temperature controller.




8.Leakage


Ans.: Molding machine of user is unable in operation, because from the leakage electricity of pump and heating element.




9.Caution of Roller machine.


Ans.: 1. The temperature wave large. (ex. easy to reach 150℃ and down to 130℃)
2. Inside with vapor. (mixing with oil and water, visual recognition finds the oil muddy or not.)
3. When find the water inside must be drawn to all of the oil, and then refilled with new oil.
4. Be attention of heating element when you refilling new oil to prevent the smoldering of heating element.
5. If your roller machine is high speed rotation about 500 RPM, 20 ~30 RPM per minute will cause the centrifugal and the oil will not be able to fully send out. Please couple with outside with friction pump to drawn the oil from the inlet of mold temperature controller.





◆ Chiller

1.Present value of Temperature does not match up with Environment Temperature.


Ans.: Temperature controller or thermocouple is faulty. Or Temperature controller does not match up with correct thermocouple. (112 matches up with Light Blue wiring of Thermocouple, and 901 matches up with Light Blue or Gray thermocouple. 902 and 902plus match up with Gray thermocouple.)




2.Inferior Radiation. (High pressure protector triggered)


Ans.: Check if Cooling fan is damaged, Filter net is stocked, Condenser is stocked, there is no cooling water, or the water pressure is not high enough.




3.Lack of Refrigerant. (Low pressure protector triggered)


Ans.: Cooling is too well to lead Low pressure protector triggered, please turn cooling water less and decrease the radiations (for Air model). Or there is refrigerant leakage inside piping of unit.




4.Anti-frozen Indicator is ON.


Ans.: 1. Setting temperature is too low to lead huge differences for overheat protector or damaged. ( Setting temperature lower than 5℃ )
Please change temperature to set at 7~8℃, and reset again after temperature is working normal.
2. Stopped supplying cooling water to unit would lead Evaporator frosted.
Please defrost it for 24 hours to reuse it.




5.Low pressure protector switch triggered. ( Environment temperature is 12℃. )


Reason: Low temperature of Environment leads unit working better, but sometimes it would lead Low pressure protector triggered. Ans.: 1. Please turn cooling water less. (to make water circulation not so good)
2. Adjust Low pressure switch lower than 1kg/cm².
This is because cooling water is low, and it would make it much lower to lead Low pressure protector triggered.
( Especially Environment Temperature is about 12℃ or lower)




6.Compressor is Burned.


Ans.: 1. Non-stop working for Compressor for a certain period of time.
(Compressor keeps working because of unable to reach required temperature from its setting.)
2.There is water inside Compressor. (Piping damaged and lead water going inside compressor.)
3.High pressure and Low pressure does not stay at stable value inside Rated range.





Granulating & Recycling System

◆ Crusher

Updatiing...






YANN BANG
ELECTRICAL MACHINERY CO., LTD.

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