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23
573104 REV C
System Flush
The SYSTEM FLUSH function is performed using a vehicle
manufacturer-approved flushing adapter. Refer to the
instructions included with the adapter while the following
steps are performed.
1. Verify the usher lter and strainer are not plugged.
2. Mount the usher to the rear of the machine.
3. Remove the oil drain bottle (see Figure 4) from the
Robinair machine. Drain the oil bottle, and dispose of the
oil according to applicable regulations. Reinstall the oil
drain bottle on the machine.
4. Recover all refrigerant from system to be ushed.
5. Note the amount of oil collected during recovery. This
amount must be replaced, as well as any oil collected
during ush.
Note: The amount of oil collected and reported during
system ush does not include the amount of oil collected
during the initial recovery.
6. Verify there are at least 6.0 kg (13.2 lb) of refrigerant in
the machine. The machine will not be able to complete a
system ush without at least 6.0 kg of refrigerant in the ISV.
Note: If the machine does not have at least 6.0 kg
(13.2 lb) of refrigerant on-board, see “Tank Fill” on page 13.
7. Disconnect the machine from the vehicle.
8. Refer to the vehicle service manual, and connect the
appropriate ushing adapters and bypasses.
9. Connect the low-side (blue) service hose directly to the
lter of the ushing kit.
10. Remove the high-side (red) service coupler, and connect
the high-side (red) service hose to the system suction
line adapter.
11. Use the supplied hose to connect the system discharge
adapter to the usher inlet.
12. Connect hoses according to the instructions included
with the ush kit.
13. Select SYSTEM FLUSH from the SETUP MENU. The unit
will prompt for any service data entry, if desired. Select
to continue to the system ushing process. The user
may be prompted to enter in a total Flush Time depending
upon which ush process is enabled.
The machine will then automatically enter the VACUUM
process and proceed to a leak test.
Once the vacuum and leak tests are completed, the unit
Operating Instructions
Figure 4
WARNING: To prevent personal
injury while working with refrigerant,
read and follow the instructions
and warnings in this manual, and
wear protective equipment such as
goggles and gloves.
Oil Drain
Bottle
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