Tuesday, March 15, 2011

Refrigerator Defrost System | Method of Operation

Refrigerator Defrost System
When opening the refrigerator and freezer doors repeatedly to add and remove food you also let warm moist air enter the interior compartment.  The humidity from this warm air gets attracted the refrigerator evaporator coils and will freeze directly to the coils.  This will form a uniform frost layer to the outside of coils.  If too much frost builds up on these coils, airflow will be restricted and the evaporator cannot absorb heat from the interior compartment.  The result will be the freezer operating at a lower temperature and a partial or full restriction in cold air flow to the refrigerator.
To prevent too much frost from collecting on the evaporator coils, a self-defrosting refrigerator will actually stop itself for approx 20 minutes every six to twelve hours to melt off this frost.  This defrost cycle is switched off and on by an electric defrost timer or electronic ADC board.  The timer stops the compressor and switches current to an electric defrost heater located directly beneath most evaporator coils.  When the heater is energized the heat is radiated upwards to melt the frost.  The frost water drains into a pan located at the bottom of the evaporator and is diverted through a tube into little pan which is located on the bottom of most refrigerators.  Most Maytag, Kenmore, Whirlpool, GE, and Frigidaire models will have this type of system. The condenser fan circulates warm air across the water filled pan and evaporates the drain water before the next defrost cycle.
If all the frost melts before the defrost timer finishes the defrost cycle, a terminating thermostat, or bimetal, will keep the defrost heater from overheating the evaporator compartment. When the freezer compartment reaches a fixed temperature, the terminating thermostat will open the circuit and shut off the electricity to the defrost heater.
Many of the later electronic refrigerators incorporate an electronic device called an adaptive defrost control board.  This electronic control board provides the same function of the defrost timer but adds a new element to save energy and to adjust the defrost cycles to “adapt” to customer usage.  The adaptive defrost board monitors how many times the door is opened and closed.  The more the refrigerator doors are opened and closed, the more humidity has entered the compartment.  The more humidity that has entered the refrigerator the more frost that has accumulated thus the “period” between each defrost cycle will be reduced.
For refrigerator repair boise needs, whether it be Whirlpool, Kenmore, GE, Maytag, or Frigidaire, please contact Western Appliance Repair. We offer the following services:
Appliance Repair Meridian Idaho
Appliance Repair Kuna Idaho
Appliance Repair Star Idaho
Appliance Repair Eagle Idaho
Appliance Repair Boise Idaho

Thursday, March 3, 2011

Appliance Repair Meridian | Washing Machine Washer Hoses

When installing any washer or washing machine hose, be sure it is not twisted or kinked or positioned in such a manner that it might kink in the future and stop the proper flow of water. Most hoses used inside washers and washing machines are secured on each end by hose clamps, and easily removed and replaced by using a screwdriver, hex driver, or special hose clamp pliers.
Water Inlet Hoses
Extreme care should be taken when attaching the water inlet hoses to the washer inlet valves with nylon bodies. Cross threading of these hose couplings on the valve inlets can cause leaks and can damage the threads. Do not over tighten. A filter washer screen is provided for each hose and is to be installed cup side up in the shoes end that is to be attached to the faucet. A standard rubber washer is provided for use in the end that attaches to the valve. Two 3/8 inch inside diameter rubber molded or reinforced stainless hose is used to carry the water from the water supply valve to a water inlet valve of washing machine.
Fill Control Hose
The fill control hose and recirculation inlet hose are secured to the tub by special internal retaining rings that can be removed by use of regular or needle-nose pliers. The reducing connector that couples the fill control hose to the plastic tubing should be tightly secured to the inside of the fill control hose by use of rubber cement.
Recirculation Hoses
On many washers here are two hoses used to recirculation the water from the outer tub through the recirculation pump and through the filter at the top of the tub. The hose between the tub and the pump is attached to a plastic side outlet assembly which is secured to the tub side by a locking ring. The other hose runs from the outlet of the recirculation pump to the filter housing. Because the filter housing is secured to the top, the recirculation hose must be removed to raise the top for servicing.
Pump Outlet Hose
On machines that do not have a two-way valve, the hose runs from the pump outlet to a hole in the rear of the cabinet and is secured to a hose coupling by a hose clamp. On machines equipped with a two-way valve, the hose runs from the pump outlet to the inlet on the two-way valve.
For all your appliance repair needs choose Western Appliance Repair in Meridian Idaho. We provide the following services:
Appliance Repair Boise - We provide appliance repair throughout the treasure valley and includes garden city and hidden springs areas.
Appliance Repair Meridian - Our appliance repair in Meridian is second to none. As our home base, we can get to the job quickly and get your appliance running properly.
Maytag Repair Washer and Refrigerator Repair Experts.