Central air conditioning host maintenance methods

Central air conditioning host is an important part of the central air conditioning system, the user usually on the central air conditioning host necessary maintenance, air conditioning can improve the efficiency of operation to ensure good use of air conditioning status. Central air conditioning host how to maintain it? Xiaobian below for you to detail the central air conditioning host maintenance methods.
First, the appearance of the unit, clean around. Check the adjustment safety device. Check the control center function. Check the starters and relays. Check the compressor operating conditions. Check the motor and operating conditions.
Second, check the state of the shaft seal. Analysis of Water System and Heat Exchange Effect. Check the amount of charge in the unit. Oil level oil temperature. No filter core and oil pressure difference. Dry filter. Unit airtight. Condition of Interlocking Device of Unit Attachment.
Third, close the oil filter at both ends of the gate valve. Use the trachea to drain the gas into the bucket. Do not start to play so exhaust valve, and slowly increase.
Four, respectively, by hand oil filter two valve outside the tubing, both ends of the temperature should be almost, are higher than the oil filter temperature, indicating that the valve is closed intact.
Five, row exhaust gas, with a special tool demolition, demolition almost off, hand remote filter to check whether the complete pressure relief.
Six, note that the demolition of the filter when the hand can not be placed on the bottom, should be properly placed on both sides. Remove the original filter core, clean the filter shell, and replace the new filter cartridge.
7, check the seal ring, install the filter. Small open separator side of this gate valve, exhaust for about 20 seconds, both ends of the gate valve in the open benefits, check the filter closed.