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GM-820A-Dual        A/C SYSTEM MAINTENANCE CENTRE-DUAL   

18 

 

A.  If the refrigerant amount in the main tank is less 3kg, the flushing 

function can’t run any more, and if 

less  1kg,  the  recharging  function  also 

can’t  run  any  more,  until  supply  enough  refrigerant  into  the 

machine. 

B.  Operations: 

B-1: Power on, select refrigerant type, then select Supply Tank function.   

B-2: Select if use the supplying connecter: 

 

 

B-3.1: If use the supplying connecter, the pipeline connection is as follows: 

          Fitting the supplying connecter to the port of fresh refrigerant tank. 

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. 

Connect the HP coupler to the supplying connecter and open it. 

B-3.2: If 

don’t

 use the supplying connecter, the pipeline connection is as follows: 

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.

 

B-4: Open the valve of fresh refrigerant tank. 

B-5: Set the supplying amount and press ENTER key to run. 

Note: Amount of supplying

Setting the amount according to remain amount in the tank.   

Suggestion: supplying amount = (4.5~5) - remained amount. 

B-6: When alarming, please close the valve of the fresh refrigerant tank, upright it and press ENTER 

key to confirm. 

B-7: After the refrigerant in the pipeline is recovered, the equipment stops automatically. Then install 

the quick coupling. 

Special declare: 

When the refrigerant is supply to the new equipment, due to the vacuum state of equipment system, some 

refrigerant will remain in the pipeline and components when supplying refrigerant to tank, resulting in the 

actual amount of refrigerant recovered will be more than that shown by the equipment, which is normal. 

14) System function 

   

   

 

14-1) Language 

 

Change the language 

Summary of Contents for GM-820A-Dual

Page 1: ...GM 820A Dual A C SYSTEM MAINTENANCE CENTRE DUAL 1 GM 820A Dual A C System Maintenance Centre R1234a R1234yf...

Page 2: ...TIC is not responsible for device damage or problem due to the usage of any optional parts or consumables instead of GATMATIC original products or GATMATIC recognized products Declaration Other produc...

Page 3: ...lternators and heating components etc to avoid harm E Wear protective clothing gloves and goggles F As automotive air conditioning pipe flushing the operator must be fully familiar with automotive air...

Page 4: ...12 8 New oil adding 12 9 Recharging 13 10 Auto Mode 14 11 Database 14 12 Equipment Maintenance 14 12 1 Exchange dry filter 15 12 2 Clean pipe of the unit 15 12 3 Calibration of load cell operate by p...

Page 5: ...nd pulse flushing functions which greatly improve the cleaning effect E Using large size glass tube with LED backlighting can effectively observe the entire cleaning process F Vertically installing th...

Page 6: ...Automatic recovering recycling E Automatic manual used oil drain F Vacuum timing G Automatic manual new oil injection H Quantitative recharging I Each function can operate independently J Auto mode K...

Page 7: ...1 Parts descriptions HP gauge Alarm LCD display Keys R134a HP port R1234yf HP port LP gauge Printer R134a LP port R1234yf LP port Window Power switch Power socket R134A Tank R1234YF Tank Used oil bot...

Page 8: ...cale handle the suspended state As shown in the figure below B Connect the power supply and power on Please operation as following C Set the language select one and press ENTER C Set the units select...

Page 9: ...lease read this user manual carefully before operating 3 Preparations before Run Flushing function A Check the refrigerant type of the automobile air conditioning and connect the right couplers to the...

Page 10: ...ompts If the process is terminated artificially it will can t be into the main function and back to the last Interface D After completion enter the function interface Description Flushing Recovery Thi...

Page 11: ...easily causes damages to the air conditioning and risk of accident D In order to achieve good flushing performance the flushing time should be more than 20 minutes General the cleaning time for single...

Page 12: ...his function it will clean the water vapor out from the A C system B It should be more than 15 minutes Generally it needs 15 minutes at least for the air conditioning only with front wind and 20 minut...

Page 13: ...d release the key to stop C 3 2 If set the filling amount press ENTER key after set and it will stop automatically 9 Recharging A Select the Recharging Function and press the ENTER key B Set the recha...

Page 14: ...full automatically after setting the parameters B Before running must drain out the used oil entirely and fill enough new oil into the new bottle Pay attention to the oil type C Operations C 1 Select...

Page 15: ...nt 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 ENT...

Page 16: ...Operations C 1 Power on select refrigerant type then select Equipment Maintenance C 2 Select Vacuum System Pipeline function and press ENTER key C 3 Connect the hoses and couplers well to the coupling...

Page 17: ...le can be extended Or when the machine appear the High pressure Alarm it need do it immediately C Operations C 1 Remove the rear refrigerant tank and place it aside Note do not remove any pipes C 2 Op...

Page 18: ...resh 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 B 4 Open...

Page 19: ...status of the machine 15 2 Servicer info Here you can set and check the servicer and dealer information The way for setting Press and keys at same time into the setup state Use the and keys to select...

Page 20: ...0A Dual A C SYSTEM MAINTENANCE CENTRE DUAL 20 16 Help Here you can check all of the help messages Declare We reserve the right to modify the contents of this document without prior notice to our custo...

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