8
Mode 3 – Charge Only
The Charge Only function is designed to add a
precise amount of refrigerant when the A/C system is
low on refrigerant. This mode is most often used
when the A/C system is working but does not produce
sufficiently cold air.
MODE 3 Operational Steps
:
1. Refer to the Pre-Operation Check List.
NOTE: If desired, the gauges of the Model 800
can now be used to aid investigation of an A/C
system problem. Ensure the automobile A/C
system is turned off prior to selecting a mode on
the Model 800.
2. Verify the auto air conditioning system is off.
3. Press MODE 3 for Charge Only.
4. The LCD will read
CONNECT HOSES ENTER TO
CONTINUE
. Press the
ENTER
key.
5. Connect the high and low side auto service hoses
to the respective high and low side service ports
on the automobile A/C system. Open the service
hose valves.
6. When the LCD reads
“SET CHARGE AMOUNT,”
set the amount of refrigerant to be charged into
the A/C system by pressing and holding the
INCREASE or DECREASE key until the desired
amount is shown. Release the key and press
ENTER to set the charge amount on the LCD.
7. The LCD should read
“PUSH START.”
8. Press START key to begin charging operations.
The 800 Series will start the charge cycle.
The LCD will display the charging process progress.
The unit will beep when the desired charge amount
has been transferred to the A/C system.
9. Verify the message on the LCD reads
“CHRG
ONLY COMPLETE.”
Unit will force a hose
clearing routine (See Full cycle).
10. Shut the service valves and disconnect the high
and low side auto service hoses from the auto.
11. Press the RESET key to return to the
“SELECT
MODE”
status.
Mode 4 – Full Cycle
The Full Cycle function of the Model 800 is designed
to remove and recycle all refrigerant in an A/C system
by transferring the refrigerant to the storage tank,
remove moisture in the system by pulling a vacuum,
and charging the system with a precise amount of
refrigerant.
MODE 4 Operational Steps
1. Refer to the Pre-Operation Check List.
NOTE: If desired, the gauges of the Model 800
can now be used to aid investigation of an A/C
system problem. Ensure the automobile A/C
system is turned off prior to selecting a mode on
the Model 800.
2. Verify the auto air conditioning system is off.
3. Press MODE 4 for Full Cycle. The LCD will read
“CONNECT HOSES”
4. Connect the high and low side auto service hoses
to the respective high and low side service ports
on the automobile A/C system. Open the service
hose valves. Press the ENTER key to continue.
5.
When the LCD reads
“SET VACUUM TIME,”
set
the vacuum hold time by pressing and holding
INCREASE or DECREASE until the desired time
is shown. Release the button and press ENTER
to accept the vacuum hold time on the LCD.
NOTE: Vacuum hold time can be bypassed if the
time is set to zero.
6. When the LCD reads
“SET VAC HOLD TIME,”
set the vacuum time by pressing and holding
INCREASE or DECREASE until the desired time
is shown. Release the button and press ENTER to
accept the vacuum hold time shown on the LCD.
NOTE: Vacuum hold time can be bypassed if the
time is set to zero.
7. When the LCD reads
“SET CHARGE AMOUNT,”
set the amount of refrigerant to be charged into
the A/C system by pressing and holding
INCREASE or DECREASE until the desired
amount is shown. Release the button and press
ENTER to accept the charge amount 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.
