GM-820A-Dual A/C SYSTEM MAINTENANCE CENTRE-DUAL
15
12-1) Exchange dry filter
A. The dry filter must be exchange when it reaches the life time. There will give a message.
B. If not exchange the dry-filter timely, it will not be able to run the recovery, flushing and supplying
functions.
C. Operations:
C-1: Please check the ID of the dry-filter at the label. Which is the SN.
C-2: Select Exchange dry-filter Function and press ENTER key.
C-3: Input the ID.
C-4: And then do step by step as the information.
Note: Please attention the mounting direction of the dry-filter.
12-2) Clean pipe of the unit
A. Through this function, it can effectively remove the oil mist and trace moisture in the internal pipeline of
the equipment, and ensure that the system is clean and pollution-free.
B. After a period of use, such as 3months, it should be run this function.
C. Operations:
C-1: Power on, select refrigerant type, then select Equipment Maintenance.
C-2: Select Clean Pipe of The Unit function and press ENTER key.
C-3: Connect the hoses and couplers well to the coupling side of the equipment, and open the
couplers.
C-4: And then press ENTER key to run.
Warning: this function is performed according to the type of refrigerant.
12-3) Calibration of load cell (operate by professionals)
A. When the load cell is not precise, it needs to be calibrated.
B. You need input the password 1510 before use this function.
C. If do the calibration of main tank load cell, please prepare a 10~20kg weight.
If do the calibration of oil bottle load cell, please prepare a 1-3kg weight.
D. Follow the prompts step by step.
Note: if here have some programs, please check according to the messages.
12-4) Drain used oil
A. It can control the used oil drained manually.
B. Select Drain Used Oil function and press ENTER key.
C. Press and hold ENTER key to drain, and release the key to stop.
12-5) Empty internal refrigerant
A. Through this function, the refrigerant in the equipment can be emptied.
B. It is necessary to use another refrigerant recovery equipment (say as MM).
C. Operations:
