Frost working condition

 (1) the frost starting single phase motor price conditions: outdoor heat exchanger tubes for less than 3 ℃ temperature of compressor running time reached more than 40 minutes. (2) the frost process: (1) compressor with a fixed 80 hz frequency operation. (2) the four-way valve, outdoor fan shut down. (3) the end of the frost conditions: (1) frost up to 10 minutes. (2) www.dongfeng-motor.com the outdoor heat exchanger copper tube wall temperature is higher than 5 ℃ (4) of the indoor and outdoor machine ac motor specification of communication. Indoor and outdoor machine USES asynchronous serial communication mode: indoor machine as the host, for outdoor communication lamination from the machine. 2 consecutive received exactly the same information is valid. Two minutes without communication or receiving signal fault, a fault alarm and shut down the outdoor and indoor fan.

Pump and fan - reciprocating pump

Now with piston type as an example to illustrate its working principle.As shown in figure 1,permanent magnet motor 7,piston pump is mainly composed of a piston in the pump cylinder for reciprocating motion within 2 to 1 liquid inhalation and ruled out.When the piston 1 started from the far-left side to the right position,studio 3 volume gradually expand,indoor pressure is reduced,open fluid suction valve 4,into the piston 1 release space,until motor run capacitor l piston moves to the far end of the process for the pump suction process.When the piston 1 right from the beginning,the move to the left side of pump fluid by squeezing,close the valve on the electricalmotor1.blogspot.com suction,pressure and open the water valve 5 and discharge,this process is called process of pressurized water pump.Piston reciprocating motion,the suction of the pump is continuously alternating with pressurized water process.The motor magnet pump working principle is actually like the compressor refrigeration system,so we are not in this explanation,and behind the compressor parts in detail.This pump is suitable for small flow,high pressure,in a large refrigeration unit used more.