sired amount is shown. Release the button and
press ENTER to accept the charge amount
shown on the LCD.
8. The LCD should read “PUSH START.”
9. Press START KEY to begin full cycle operations.
10. The unit will begin to recover as outlined for the
Recovery Only cycle, and then evacuate the A/C
system and will beep to indicate the end of the
vacuum time— if Vacuum Hold is used.
11. Record the vacuum level shown on the low
pressure gauge and press START to begin the
vacuum hold time. The hold time will count
down on the LCD and the unit will beep at the
end of the hold time. If vacuum hold time was
set to zero, the unit will transition into charge
mode.
12. Record the final vacuum level shown on the low
pressure gauge. If the two recorded vacuum
levels are different, the A/C system may have a
leak and may not retain refrigerant when
charged. The Model 830 will automatically start
the charge cycle.
The unit will prompt you to “INJECT OIL NOW”
press and hold the oil inject switch until the desired
amount of oil is injected into the A/C system.
The LCD will display the progress of the charging
process. When the desired charge amount has
been transferred to the A/C system, the unit will
beep.
13. Verify the message on the LCD reads “FULL
CYCLE COMPLETE.”
14. Press the RESET button. The LCD should read
“CHECK OIL LEVELS.”
The LCD will read “HOSES NEED CLEARING”
15. Press the Enter Key.
The unit will then prompt you to “DISCONNECT
VEHICLE.”
16. Shut the service valves and disconnect the high
and low side auto service hoses from the auto-
mobile.
17. Press the ENTER key, the LCD will read
“CLEARING HOSES.”
18. Measure the oil in the oil drain bottle. Dispose
of recovered oil in a proper manner.
19. Press the RESET button to return to the
“SELECT MODE” status.
10
Mode 5– Oil Flush
The Oil Flush mode is designed to remove oil from
an automobile A/C system so new oil can be added.
In this mode refrigerant is circulated through the A/C
system and the Model 830. An oil separator in
Model 830 removes the oil and returns oil-free re-
frigerant back into the A/C system. At the end of the
cycle, the refrigerant is completely removed from
the A/C system. The
Oil Flush mode is not de-
signed to flush dirt or debris from the A/C system.
This mode can take up to 1 ½ hours to complete.
Because of the variety of A/C system configurations
currently in service, the flush may bypass certain
sections of the A/C system. To ensure the complete
system is flushed, you may need to ”pinch off” cer-
tain hoses to force the refrigerant flush throughout
the system.
MODE 5 Operational Steps
1. Refer to the Pre-Operation Check List.
2. Connect the high and low side auto service
hoses to the respective high and low side ser-
vice ports on the automobile A/C system. Open
the service hose valves.
3. Press MODE 5 for Oil Flush
4. When the LCD reads “SET FLUSH AMOUNT,”
set the flush amount by pressing and holding
INCREASE or DECREASE until the desired
amount is shown. Release the button and press
ENTER to accept the flush amount shown on
the LCD. Testing has shown the ideal flush
amount is three (3) times the normal charge
amount. For instance, if the correct charge
amount for the A/C system being services is two
(2) pounds, the ideal flush amount is four (4)
pounds.
5. When the LCD reads “SET FLUSH TIME,” set
the flush time by pressing and holding IN-
CREASE or DECREASE until the desired time is
shown. Release the button and press ENTER to
accept the flush time shown on the LCD. A
minimum flush time of thirty (30) minutes is rec-
ommended.
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