A/C System Flushing

WARNING
^ USE EXTREME CARE AND OBSERVE ALL SAFETY AND SERVICE PRECAUTIONS RELATED TO THE USE OF REFRIGERANTS.
^ DUE TO REFRIGERANT HAZARDS, ALWAYS WEAR SAFETY GOGGLES AND NON-PENETRABLE GLOVES WHEN WORKING ON OR FLUSHING A/C SYSTEMS.

CAUTION:
^ Suction accumulator/drier, receiver/drier, muffler, hoses, thermal expansion valve, and fixed orifice tube should be removed. Do not flush these components. Internal plumbing of these devices makes it impossible to properly remove residual flushing agent. Except for hoses, these components are typically discarded after A/C system contamination. Hoses can typically be reused unless they are clogged with debris.
^ The 3.78 liters (1 gallon) of Ford A/C Flushing Solvent F4AZ-19579-A and FL1-A filter used in the Rotunda A/C Flusher 014-00991 are intended for use on one vehicle only. They may be used to flush both the A/C condenser core and A/C evaporator core on an individual vehicle, but under no circumstance should they be used on more than one vehicle.

The Rotunda A/C Flusher 014-00991 or equivalent allows flushing of the A/C evaporator core and A/C condenser core to remove contaminates which result from compressor failure. Using this method of flushing the A/C system, these components can be cleaned and flushed without being removed from the vehicle.
1. Recover the A/C system into a proper recovery system. Refrigerant Recovery
2. Clean all dirt and debris from the outside fittings on the A/C evaporator core and A/C condenser core.






3. Disconnect the A/C hoses from the A/C evaporator core and A/C condenser core. If the component tube fittings are the female spring lock type, check the inside of each fitting for scratches, corrosion, or surface residue. Clean the female fittings using this procedure:
a. Remove any surface residue from the inside of the female fitting by polishing with 400 grit emery cloth. Use only a twisting motion so that any scratches made will not cross the O-ring sealing surface.
b. Perform additional polishing using 600 grit emery cloth.
c. Remove all residue from polishing the fitting by wiping with a lint-free cloth.
4. Securely attach the Rotunda A/C Flusher 014-00991 or equivalent as follows:
a. Attach the A/C flusher flush line to the outlet tube.
b. Attach the A/C flusher return line to the inlet tube.

NOTE:
^ Select the proper A/C flusher fitting for the component being flushed. O-rings must be used with A/C flusher fittings to ensure a leak-free connection.
^ All flushing and purging will be performed in the direction opposite the normal flow of refrigerant in an A/C system.

5. Connect the static ground strap to vehicle.
6. Fill the solvent reservoir of the Rotunda A/C Flusher 014-00991 or equivalent with one gallon of Ford A/C Flushing Solvent F4AZ-19579-A.

CAUTION: The Rotunda A/C Flusher 014-00991 is for use with only Ford A/C Flushing Solvent F4AZ-19549-A. Use of any other flushing solvent or agent may cause damage to the flusher. Substitute solvents or agents may not be removed during the purging process and may leave residues which can damage A/C system components.






7. Place A/C flusher mode valve 1 in purge position and mode valve 2 in the flush position. Set A/C flusher pump switch to OFF.






8. Ensure the purge air valve is in the OFF position, then attach air hose to the flush quick coupler.
9. If the vehicle battery will be used as the power source, attach a battery charger (minimum 10 amps continuous operation) to the vehicle, then attach A/C flusher battery connectors to the battery charger.

NOTE: A/C flusher cooling fan must be operating when the A/C flusher is attached to a power source. Do not proceed with the flushing procedure if the coling fan does not operate. Refer to the A/C instructions manual provided with the equipment.






10. Place A/C flusher pump switch to on, then slowly turn A/C flusher mode valve 1 to the flush position.
11. Operate the A/C flusher pump for a minimum of 15 minutes. After fifteen minutes of continuous operation, return A/C flusher mode valve 1 to purge position for 1 minute.
12. Place A/C flusher pump switch to OFF, then disconnect air hose from flush quick connector.






13. Attach air hose to purge quick connector, then slowly engage the air purge valve to full flow for 1 minute.






14. Release the air purge valve lever, then place A/C flusher mode valve 2 in purge position.
15. Depress the air purge valve lever and lock in the full flow position with the sliding lock ring.
16. Operate the air purge for a minimum of 30 minutes. After 30 minutes of continuous operation, release the air purge valve lever.

CAUTION: Failure to continue air purge for the entire 30 minutes may result in residual amounts of flush solvent contaminating the A/C system. Residual flush solvent in a functioning A/C system may lead to A/C system failure.

NOTE: During the 30 minute air purge, drain any accumulation of water from the moisture trap.

17. Disconnect the air hose, then the A/C flusher inlet and outlet hoses.
18. Disconnect the static ground strap.
19. Disconnect the A/C flusher fillings from the component being flushed.
20. Remove the A/C flusher battery connectors.
21. Connect A/C hoses to the A/C evaporator core and A/C condenser core.
22. Evacuate and recharge the A/C system. Evacuation Evacuation and Charging
23. Leak test A/C system.