Problem: exhaust pressure is too high reasons: 1, inadequate water condenser cooling water or cooling air volume air-cooled condenser is less than 2, the condenser tube surface scale cluster of oil is too thick or too thick, resulting in cooling difficulties 3, the refrigeration system 4 air refrigerant too rushed Note 5, the exhaust pipe valve malfunction, causing excessive pressure troubleshooting method: 1, check valve is fully open the freezer repair, increase supply or check 2, the motor voltage, speed The drive belt is loose 3 scale maintenance cleaning, brushing oil, the condenser tube surface clean clusters 4, 5 let go of the air discharge excess refrigerant 6, a check valve repair, winding short circuit and winding machine touch Shell Ground: Such failures are caused by parts of the compressor motor, disconnect its power supply failure phenomenon is normal, the compressor does not work; short-circuit and when the shell hit after power protection action, or burning fuse; to note that If a short circuit between the windings of minor repairs, compressor was able to work CNC machinery repairs, but the work of the current large, high temperature of the compressor, and before long, the thermal protection will be action. Winding and winding shorted touch chassis ground generally use a multimeter to check; winding shorted particularly mild short due to resistance of the winding itself is very small, it is not easy to determine, should be determined based on the measured current. Compressor repair _ _ Snow Dragon refrigeration servicing provided by the Dongguan City-long Refrigeration Electrical Equipment Engineering Co. Dongguan City-long Refrigeration Electrical Equipment Engineering Co., Ltd. (www.dgxuelong.com) strong, credible, in Dongguan, Guangdong heat exchangers, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead XUELONG refrigeration and you hand into the brilliant, for a better future!