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Idiomas disponibles
Flushing Line Sets for R-22 to R-410A Conversions
I. Equipment Required
1. Pro-Flush
Kit including one 8 oz. can of Pro-Flush
®
2. Resealable container to hold the contaminated flush material.
3. Nitrogen tank with regulator.
4. Vacuum pump with accessories
5. Absorbent shop cloths, rubber gloves and safety goggles.
II. Detailed Instructions
1. Disconnect and remove old equipment.
2. Make sure a resealable waste container is attached to the exit end of the lineset to
capture the flushed oil. Establish one end of the lineset as the discharge point.
3. To maximize solvent contact time, restrict the flow at the discharge point. This will also
minimize the amount of solvent needed to thoroughly clean the system. For best
results, use a DiversiTech Lineset Flush Adapter (sold separately) to connect the liquid
line and the suction line at the disconnected air handler. Inject solvent into the liquid
line and collect solvent at the suction line outdoors at the disconnected condensing
unit.
4. Attach the hose and injector tool assembly to the outlet side of the pressure tank. Fill
the Pro-Flush
up to 24 oz. of Pro-Flush
the inlet (ball valve) side of the injector tank (fig. A, page 3).
5. Set the pressure regulator on the nitrogen tank at 50 PSI, open the inlet valve at the tank
then slowly open the valve on the injector tank to pressurize it. DO NOT EXCEED 200
PSI.
6. After pressurizing the Injection Tank, close the both valves and disconnect the nitrogen
fill hose.
7. Linesets of different diameters, lengths and configurations will require different
quantities of Pro-Flush
A. For liquid lines, one 8 oz. can of Pro-Flush
line: Insert the rubber adapter in the inlet of one of the line sets, maintaining the
injector tank in an upright position, inject Pro-Flush
in stages. The number of flushes will depend on the length of the line and the
contamination level. A typical line set will require 2 to 3 oz. of Pro-Flush
effectively remove the oil residual in the line sets. Results will vary depending on
contamination level.
B. For larger diameter tubing: Larger diameter line sets will require considerably more
Pro-Flush
process will therefore require multiple 3 second injections of Pro-Flush
achieve satisfactory results.
8. Connect the hose from the nitrogen tank to the inlet port (fig. B, page 4) of the part that
is being flushed and purge the system at 150 PSI for 1-2 minutes. This will assure
removal of all trace amounts of oil residue and solvents. Check the solvent at the outlet
port to be sure all contaminants have been purged from the system. If the exiting
solvent is not yet clear, repeat steps 7 and 8.
9. Connect the new equipment. Using a vacuum pump, evacuate the system to a low
micron level.
10. Check the system for leaks, then charge system with the refrigerant and oil per the
equipment manufacturer's recommendations.
11. Connect the electrical circuitry and test the system again following manufacturer
recommendations.
12. Any unused Pro-Flush
use. Ensure all valves are closes on the injection tank to prevent solvent loss during
storage. Dispose of the waste solvent in accordance with local and state waste
disposal regulations.
Injector pressure tank with Pro-Flush
®
. Connect the hose from the regulator of the nitrogen tank to
®
Solvent to achieve complete removal of residual oils.
®
Solvent due to increased volume of the larger tubing. The flushing
®
Solvent can be stored in the injection tank and saved for future
®
Solvent.
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Solvent. A tank may be filled with
®
will typically clean up to 250 ft. of liquid
®
Solvent in 3 second increments
®
6
to
®
solvent to
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