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Micro Dehumidifying Dryer

Micro Dehumidifying Dryer
(DHM-SL )

Our latest micro dehumidifying dryers feature the compressed air drying system and work with stainless hopper dryers for small volume, like electronic components and other plastic resins.

FEATURES

The latest micro dehumidifying dryer uses compressed air to dry the plastic resin.  The air volume generated by the air compressor is suitable for the production of small parts, such as electronics parts. The perfect grade of dryness coupled with a moderate amount of drying air, the production efficiency greatly increased.
Air compressor process the air via water filtration, and the air will be compressed between pressure 5~7kg/cm² . The compressed air will then go through the molecular sieve and supply the dry air with dew point up to -40 ~ -50 ℃.

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During the molding process, it will fully demonstrate the perfect plastic properties. In accordance with the different types of plastic, the drying time required is also slightly different, for 2 to 6 hours.
The multi-function design can dry, dehumidify, and automatically convey resins. Comparing to the regular dehumidifying dryer, it can save space and directly connect to the inlet of molding machine. It can directly convey the drying resins to production to prevent resurgence and to ensure the production complete.

  1. Display the dew point detection

  2. Insufficient air pressure detection

  3. Built-in positive pressure conveying system

  4. Overheat preventer

  5. Weekly timer

  6. Install high-density filter

  7. With Industry 4.0 features, Ethernet and RS485 can be used to connect with other brands.

  8. The controller and main body can be separated or combined to facilitate for space arrangements.

Micro Dehumidifying Dryer

SPECIFICATION

Micro Dehumidifying Dryer

REMARKS

 

  • We reserve the right to change the technical data without prior notice.

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FAQ

Hopper Dryer

    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.

    1. 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.
      4-1 Setting 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.

    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.

  • 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.

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

  • You would see ① Indicator of SB is ON and ② Displayed FFF or - -

  • Positive and Negative Pole of Thermocouple are not connected correctly.

    Positive Pole connects RED wires.

    Negative Pole connects BLUE wires.

  • Check if Power cable is damaged or broken.

    Motor overload protector triggered.

    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.

    1. EGO protector triggered.

    2. OP protector triggered.

    3. Replace with New lamps.

Dehumidifying Dryer

    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.

  • 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.

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

  • To replace temperature controller, auto computing and adjust PID.

  • Check cooling water, filter, evaporator and cooler.

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