Preliminary Operations; Automatic Procedure - MasterCool 69789 Instrucciones Para El Uso

EMPTY TANK ALARM:
SERVICE ALARM:
LOW REFRIGERANT ALARM:

PRELIMINARY OPERATIONS

Check that the main switch (Fig. 6-I, page 8) is set to 0. Check that all the machine valves are closed. Connect the machine to the electrical supply
and switch on. Check that the vacuum pump oil level indicator shows at least one-half full. If the level is lower, add oil as explained in the ROUTINE
MAINTENANCE section (page 32.) Check that in the new oil container (Fig. 6-D, page 8) there are at least 3.4 oz. (100 cc) of the oil recommended by
the manufacturer of the vehicle A/C system. Check that the oil level in used oil container (Fig. 6-M, page 8) is less than 6.7 oz. (200 cc.) Check the
machine's data display to be sure there is at least 9 lbs (4.08 kg) of refrigerant in the tank. Should this not be the case, fill the on-board machine
tank from an external tank of appropriate refrigerant following the procedure described in the ROUTINE MAINTENANCE section (page 32.)
WARNING:
DO NOT STOP THE RECOVERY PROCESS. Stopping the recovery process will definitely cause damage to the Compressor and perhaps other
components. It will also cause the machine to fill up with unprocessed liquid refrigerant which will disable the machine from further use.
Damage due to STOPPING THE RECOVERY PROCESS could void the warranty.

AUTOMATIC PROCEDURE

In the automatic mode, all the operations are performed automatically: recovery and recycling, oil discharge, vacuum, new oil reintegration, and
charging. The values for the quantity of gas recovered, quantity of oil recovered, vacuum time, quantity of oil reintegrated, and quantity of
gas charged into the system are automatically printed at the end of all operations.
Connect the hoses to the A/C system with the quick-connect couplings, bearing in mind that BLUE must be connected to the low pressure side and
RED to high pressure. If the A/C system is equipped with a single quick-connect coupling for high or low pressure, connect only the relative hose.
Check that the high- and low-pressure taps are closed. Start the vehicle engine and switch on the air conditioner. Allow both to run for about 5 to 10
minutes with the passenger compartment fan at full speed. THEN TURN OFF THE A/C SYSTEM AND SHUT-OFF THE VEHICLE'S ENGINE.
Turn on the machine, from main menu:
Select AUTOMATIC PROCEDURE, the following screen is displayed (only if the hardware for hybrid vehicles is installed in the machine).
12
refilled by 69789/69789-H.
NOTE: Never transfer refrigerants to a cylinder or tank unless it is D.O.T. approved for refilling. D.O.T. approval
is indicated by the designation "DOT 4BA" or "DOT 4BW" stamped on a tank's collar (handle.) If a refrigerant
tank is overfilled, it may explode! Failure to abide by these warnings may cause personal injury or death.
Beeper and the LCD advise when the quantity of refrigerant fluid contained in the tank is too low. At this time
it will be necessary to bottle fill 69789/69789-H to approximately 12 to 15 lbs of refrigerant in order for the
alarm to clear.
Service Alarm: The first service alarm; when the total recovered amount of refrigerant reaches 114 lbs, a
beeper will sound and the LCD will display SERVICE ALARM. To clear the alarm, press F2.
After the first alarm is cleared, filters should be purchased to have ready when 69789/69789-H requires that
the filters be replaced. The second service alarm; when the total recovered amount of refrigerant reaches
132 lbs, a beeper will sound and the LCD will display ENTER FILTER CODE. There will also be 10 dots along
the bottom of the screen. To deactivate the alarm, the filters will need to be replaced (see page 34 Replacing
the dryer filters.)
NOTE: It is good practice to change the Vacuum pump oil when the filters are being changed. (see page 32,
Vacuum Pump)
Beeper and the LCD advise when the charging quantity set exceeds the amount of refrigerant available. The
minimum quantity of refrigerant is 4.50 lbs. If the gas available minus the charge quantity equals less than
4.5 lbs, 69789/69789-H will interrupt the attempt to charge and notify the operator that there is insufficient
refrigerant. At this time it will be necessary to tank charge 69789/69789-H to approximately 12 to 15 lbs of
refrigerant in order to perform a charge. For instance, if the gas available is 9.50 lbs and the charge
quantity is 1.80 lbs, then 9.50 lbs minus 1.80 lbs equals 7.70 lbs. 7.70 lbs is greater than 4.50 lbs so
69789/69789-H will perform the charge. If the gas available is 5.90 lbs and the charge quantity is 1.80 lbs,
then 5.90 lbs minus 1.80 lbs equals 4.10 lbs. 4.10 lbs is less than 4.50 lbs, so 69789/69789-H will not
charge and will let the operator know that there is insufficient refrigerant available.
F1
F2
F3
F4
F5
F6