Mastercool 69788-A R134a RECOVERY_RECYCLE_RECHARGE - Manual (Page 19)

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supplied.)
Lift the quick-connect coupling near the top of the container and remove the container complete with cap. Unscrew the cap and fill the container
with the correct quantity of oil of suitable type and grade. Screw the cap back on and, lifting the quick-connect coupling as above, replace the
container in its holder.
EMPTYING THE USED OIL CONTAINER
This operation must be performed whenever the oil level exceeds 6.7 oz (200 cc.)
Procedure: Remove the container from its holder. Unscrew the container while holding the cap in place. Empty the used oil into a suitable container
for used oils. Screw the container back in place while holding the cap in place. Carefully replace the container into its holder. (Dispose of used oil
as per your federal, local and state regulations.)
CHECKING THE SCALE RESPONSE
Turn the unit on and note the “REF AVAILABLE” reading. Hang the 500g test weight that was supplied with the machine from the hook under the
scale. (Fig 13-7) The “REF AVAILABLE” should go up by 500g+/-28g, 1.10lb +/-.06lb or 18oz +/-1oz depending on what units the machine is set
at. If the results of the test are not within these specifications, it is recommended that the scale be re-calibrated. The scale re-calibration should be
done by a qualified Service Technician. The equipment necessary for scale re-calibration is not supplied with 69788.
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FIG. 13
PURGING NON-CONDENSABLE GASES
If 69788 should become loaded with excessive tank pressure due to the accumulation of NCG (Non-Condensable Gases) it will be necessary that
the operator purge the NCG manually. The operator will need to start the manual purge and the machine will automatically stop the purge when the
proper pressure is reached. The operator can also stop the purge manually before the machine determines the proper pressure.
Select NEXT MENU, scroll down with the arrow, select AIR PURGE. The following screen will be displayed:
AIR PURGE
TANK PRESS XX PSI
TANK TEMP XX.X °F
PRESS: START
Press RESET to exit the manual purge.
NOTE: During the purging process some refrigerant will be released from the tank. Some loss of refrigerant is normal and unavoidable due to design
limitations and the nature of R134a refrigerant.
SETTINGS
LANGUAGE
Switch the machine on. The MAIN MENU will appear after a few seconds:
AUTOMATIC PROCEDURE
ASSISTED PROCEDURE
<NEXT MENU>
Ref avail X,XX lb
Select NEXT MENU, Press ENTER:
LAST RECOVERED QTY
TANK CHARGING
AIR PURGE
<DATA AND CONFIGURAT.>
Select DATA AND CONFIGURAT., Press ENTER: