How to Clean a De-Humidifier like a Pro

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8. With cover, rear grille, and front grilles removed locate fan motor oil holes. Add a few drops of oil to each end of the motor body. Use a general purpose (3in1) oil or clean motor oil. A #30 oil is sufficient. Three or four drops on both ends of the motor body are sufficient. Add the oil slowly, pausing a few seconds between each drop. If added too quickly over-lubrication will result.

9. Straighten any bent fins. Use a fin comb if available. If no fin comb then use something soft such as a Popsicle stick. Straightening the fins will increase the efficiency of the airflow through the coils. Use caution as these coils are filled with high-pressure refrigerant.

10. Wipe any dirt from fan blade using a soft rag. Do not bend blades. This would cause a vibration that would harm the motor.

11. Vacuum all surfaces including front and back of grille assembly. Vacuum underside of metal cover. Vacuum dirt buildup from base and any other exposed surfaces.

12. Drain any water left in the base and allow it to dry.
    

13. When completely dry plug in and test operation. On some models testing may require temporary override of bucket overflow switch. Test that cooling coil begins to sweat water within few minutes of operation. If everything appears okay unplug and reassemble. Insert water collection bucket slowly to avoid damaging float switch mechanism. A bend float arm can allow water bucket to overflow, or affect compressor startup.

Repeat this simple step-by-step procedure every year. If you do, the machine will be ready for many more years of dependable service.

TECHNICIANS HINT: Invest in an appliance condenser brush to clean the coils. Can be used to clean a multitude of household items including, refrigerator, air conditioner, de-humidifier, vacuum cleaner, and electric dryer. A great multi-function tool for a do-it-yourself person. Approximately $10 at any appliance parts store.

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ABOUT THE AUTHOR: Copyright 2005 by Donald Grummett. All right reserved. Donald Grummett is an appliance service manager in Ottawa, Canada. In the trade over 30 years as both a technician and business owner. For more information about appliances including FAQ, Stain guide, Recycling, and Newsletter visit www.mgservices.ca

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