Mastercool 69788-A R134a RECOVERY_RECYCLE_RECHARGE - Manual (Page 11)

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1. Set the quantity of refrigerant required for the A/C system to be charged. Following are examples for each set of units.
Lb, the display will have 4 digits, two digits then a decimal point and then two digits. The cursor moves from the left to the right. If the desired
charge is 1.75 lbs, then you will enter 0 1 7 5.
Oz, the display will have 3 digits. The cursor moves from the right to the left. If the desired charge is 36 oz’s, then you will enter 0 3 6.
Gr, the display will have 5 digits. The cursor moves from the right to the left. If the desired charge is 980 grams, the you will enter 9 8 0.
Kg, the display will have 3 digits, two digits then a decimal and then one digit. The cursor moves from the right to the left. If the desired charge is
1.5 Kg’s then you will enter 1 5.
Lb-oz, the display will have 4 digits, two digits then a colon and then two digits. The cursor moves from the left to the right. If the desired charge
is 1 lb’s 7 oz’s then you will enter 0 1 0 7.
VACUUM XX MIN
0 →1→0→7→ENTER→
Open high and low
valves, then press
START
<CHARGING XX:XX lb>
NOTE: When working with A/C systems with a single high-pressure (RED) coupling, set the charging quantity 3 oz. (.19 lb or 85g) more than the
required quantity, since in this case it will be impossible to recover the residual refrigerant from the hoses after charging.
NOTE: In most cases, the quantity of refrigerant being charged into the A/C system is given on a data plate inside the engine compartment of the
vehicle. If you do not know the correct quantity, consult the relevant manuals.
2. This model is equipped with refrigerant capacities stored in its database. Press the
↓ key, the following will appear on the display:
<ALFA ROMEO>
AUDI
BMW
CHRYSLER/JEEP
Use the arrow keys ( ↓↑) to select the required vehicle brand and press ENTER to confirm. The display will now show the various models (for
example, if the brand chosen was FORD):
<COUGAR>
ESCORT
ESCORT D
FIESTA
Use the arrow keys ( ↓↑) to select the model required and press ENTER to confirm. The following will appear on the display:
VACUUM 20 MIN
<FILLING w:yz lb>
where “w:yz” refers to the amount of refrigerant for the vehicle selected. The machine will be ready to enter the correct quantity of refrigerant.
Confirm by pressing the ENTER key.
Open the high and low service valves on the machine and press the START key to begin the refrigerant recovery/recycling phase, which will be
indicated on the LCD as “RECOVERY/RECYCLING.” During this phase, the LCD will display the quantity of refrigerant recovered. Upon completion of
recovery, the machine will stop and automatically discharge the used oil from the A/C system if any was present during recovery. The oil discharge
operation lasts 6 to 14 minutes depending on the ambient temperature and the amount of refrigerant recovered. During the oil discharge operation
the following screen will be displayed.
RECOVERY PAUSED
OIL DRAINING
PLEASE WAIT
TIME: 6 MIN
If any residual refrigerant is left in the A/C system, as indicated by an increase in pressure during the oil discharge phase, recovery will automatically
restart.
NOTE: Stopping the recovery phase before the oil is discharged may damage the recovery/recycle machine’s compressor.