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My test chamber now has a slow pull down or no pull down at all
Jan 11, 2018

When my compressor and condenser fan run continuously and the compressor amperage is normal.

Check these possible causes and solutions:

  1. Your test chamber's evaporator coil has iced up.

  2. → Defrost and dry out your test chamber. Remember to plug up ports or any openings where external air can enter the chamber.

  3. There is an excessive live load in the test chamber or there is excessive heat leakage into the chamber through the ports or other openings is occurring.

  4. → Eliminate the cause.

  5. The door is being opened too often.

  6. → Eliminate the cause.

  7. There is a leak and consequent loss of refrigerant charge.

  8. → Identify and repair the leak. Then recharge the test chamber with refrigerant.

  9. The compressor is defective

  10. → Replace the defective compressor.

  11. A test piece of specimen is blocking the airflow in the test chamber.

  12. → Remove any excess load or relocate the specimen.

As a “Rising star” in the field of environmental testing, Hardy not only obtained certifications such as ISO9001:2008, ISO14001:2004, CE etc., but also owned several rewards, honour and 17 Chinese Patents awarded by Chinese government such as innovation design, optimal control etc. 

As a “Main force” in the environmental testing domain,Hardy provides products to customers such as climate testing chamberTemperature Humidity Testing Chamber 、Environmental Stress Screening (ESS) ChamberAGREE chamberTemperature shock chamberWalk-In Environmental Test ChamberAltitude (Hypobaric) Test Chamber etc.