Taizhou Mingjia Electrical Co., Ltd
Add: No.95-97, hENGJIE town, Luqiao Borough, Taizhou City, Zhejiang Province, China
Tel:86-576-88521132
Fax:86-576-88521132
msn: dara.xu@hotmail.com
email:
sales@thermal-sensor.com
A defrost timer is a cycling device typically found in refrigerators and freezers. It times the frequency and duration that the defrost heater coils melt the ice that builds up around the evaporator coils. If ice is allowed to build up, air will not be able to freely flow past them - resulting in reduced efficiency and sometimes a drastic warming of the cooling unit. Most of the time, the defrost timer is in the cooling mode, allowing the compressor to activate when the thermostat signals it to. The remaining part of the cycle (usually less than 30 minutes)the timer is in defrost mode. In this mode, it signals the defrost heaters to melt the ice build up on the coils. This defrost action is limited by the defrost thermostat.
This device can be located in a number of different locations inside the fridge, including behind the control panel or grille in the freezer. It is a crude clock which switches back and forth between a defrost mode and a regular cooling mode. When the refrigerator timer turns into defrost mode, the cooling functions of the refrigerator are turned off and the defrost heater is activated to melt frost which has built up in the freezer. When the timer returns to cooling mode, the refrigerator is allowed to cool again and the defrost heater is turned off. The overall internal temperature of the fridge is kept in a safe range.
Rated Voltage
|
Frequency
|
Input Current
|
Input Power
|
Switch Rating
|
|
3-2(Connect
defrost Circuit)
|
3-4(Connect
compress)
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||||
AC200-240V
|
50/60Hz
|
<8mA
|
<1.6w/1.5w
|
250V 5A
|
1/3hp
|
AC100-120V
|
50/60Hz
|
<17mA
|
<1.8w/1.7w
|
125V 10A
|
1/3hp
|
AC110-127V
|
50/60Hz
|
<13mA
|
<1.5w/1.3w
|
140V 10A,
|
1/3hp
|