GM720A-YF A
/C Service Station
9
C-2: Unscrew the block of the drain port to drain the old oil out entirely. Then re-back the block to the
drain port.
C-3: Unscrew the cap of the fill port and then fill the new oil slowly into the vacuum pump until the oil level
reach at the center site. Then re-back the cap to the fill port.
Note: the new vacuum pump oil cannot be filled too much into the vacuum pump otherwise it will
spray out when working.
C-4: Re-back the cover.
13) Discharge non-condensable gases
A
、
When the machine appear the High-pressure Alarm, it need do this function.
B
、
We advise that it should be done once a month.
14) System function
14-1) Supply main tank (internal tank)
A
、
If the refrigerant amount in the main tank is less 4kg, the flushing function can’t run any more until supply
enough refrigerant into the machine.
B
、
There have two ways to supply the refrigerant.
Method 1:
M1-1: Connect the port of fresh refrigerant tank to the LP port of equipment.
Note: it should connect to the liquid port of fresh refrigerant tank. If has no liquid port, please
place the fresh refrigerant tank upside down.
M1-2: Block the HP port of equipment with a cap.
M1-3: Select supply main tank function and then set the supplying amount.
Window
Drain port
Fill port
