Auto Cooker Hood Troubleshooting

FOR IMMEDIATE RELEASE
(Free-Press-Release.com) April 19, 2011 -- Automatic grade range hood, models are different, but its structure and working principle is basically the same, so the repair methods were similar. Here are multiple fault auto hoods and repair methods for repair information.
1, by function switch, no response.
This is a power failure due to a difference.
2, automatic control failure, the light does not shine.

This failure is the lack of more cleaning and maintenance, installation of gas sensors on the panel surface blemish oil slick, caused by the obstacle sensor. Remove the sensor, the guards into the brush cleaned using detergent. If the sensing head and surface dirt, wash ethanol can be used back in place, troubleshooting. If not, then the automatic control circuit by adjusting the sensitivity potentiometer to improve the sensitivity and can, if still valid, mostly potentiometer is damaged, replace the potentiometer can be. After these repairs will not work, it is a gas sensor aging failure, replacement of new products, troubleshooting.
3, according to keyboard switch, the motor does not turn when the turn.

The failure of several more of the following reasons: First, the keyboard switch fixed contact pad deformation, resulting in static and dynamic contact ambiguous. Wash with detergent dynamic contact sheets, needle nose pliers and then the contacts living roots to corrective action and restore movement to contact normally elastic contact. Second, through the motor wire connector screw loose bad, to find re-tighten the screw loosening. Third, the first loose electrical wiring, find the loose connection first, then fast again, if necessary, weld tin, wrapped with insulating tape.
4, difficult or does not start the motor starter.
This failure is the motor start capacity multi-leakage or failure.
5, the motor can rotate, noise, housing is very hot.
This fault is more serious rotor bearing oil or wear caused by lack of oil, first remove the blade, gently shake his hand and hold the rotor shaft, this time there are two phenomena: First, no loose, feel very tight, this phenomenon is a serious lack of oil; Second, there is loosening, and feel a great gap, this phenomenon is a serious bearing wear, to be replaced with new bearings.

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Auto Cooker Hood     home repair