Brochure

Figure B
Pro-Flush
®
HVAC & Refrigeration Systems Flush
Detailed Application Bulletin and Instructions
Description
The Pro-Flush
®
Kit consists of a reusable injection tank (with built-in 200psi
pressure relief valve), nitrogen charging hose, injection tool assembly and one 8
oz can of Pro-Flush
®
Solvent. The trigger injector on the tool assembly assures more
ecient use of the solvent by allowing innite control of the ushes rather than the
less ecient method of ushing in one long burst. The Pro-Flush
®
Solvent is a dual
purpose blend designed to clean line sets in preparation of changing from R-22 to
R-410A (mineral oil to POE oil) as well as to ush the contaminants from a system
aer a compressor burn out. Typically, due to the high acidic level of
contamination in a burn out, more solvent will be required in system ushes than in
line set ushes. The Pro-Flush
®
Solvent conforms to the EPA Signicant New
Alternatives Program (SNAP) and is non-ozone depleting and low-toxicity.
Detailed Instructions
Compressor Burnouts
I. Equipment required
1. Pro-Flush
®
Kit including one 8 oz. can of Pro-Flush
®
Solvent for every 5-8 tons of
system capacity.
2. Re-sealable container to hold the contaminated ush material.
3. Nitrogen tank with regulator.
4. Vacuum pump with accessories.
5. Absorbent shop cloths, rubber gloves and safety goggles.
II. Detailed Instructions
1. Evacuate the system using approved techniques and recovery equipment.
2. Take the electrical system o-line
3. Remove the old compressor from the system
4. Remove lter drier cores as well as any check valves and reversing valves on
heat pumps. It may be faster and less expensive to by-pass the lter drier,
check and reversing valves with a by-pass loop.
5. Make sure a re-sealable waste container is attached to a discharge port to
capture the ushed acidic contaminants.
6. To maximize solvent contact time, restrict the ow at the discharge port. This will
minimize the amount of solvent needed to thoroughly clean the system.
7. Attach the hose and injector tool assembly to the outlet side of the pressure
tank. Fill the Pro-Flush
®
Injector pressure tank with Pro-Flush
®
Solvent. A tank
may be lled with up to 24 oz. of Pro-Flush
®
. Connect the hose from the
regulator of the nitrogen tank to the inlet (ball valve) side of the injector tank
(g. A, page 3).
8. Set the nitrogen gauge at 50 psi, open the regulator valve on the nitrogen tank
then slowly open the valve on the injector tank to pressurize it. DO NOT EXCEED
200PSI.
9. Close the valve on the injector tank and nitrogen tank and then disconnect the
nitrogen hose from the injection tank.
10. Insert the rubber adapter in the inlet port (g. B, page 4), maintaining the
injector tank in an upright position. Inject Pro-Flush
®
Solvent in 3 second
increments in stages (2-3 oz/ton). The number of ushes will depend on the
size of the system and the contamination level.
11. Connect the hose from the nitrogen tank to the inlet port of the part that is
being ushed 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 10 and 11.
12. Next install the new compressor, new lter drier core and check valves. If the
system was bypassed with a loop, remove and reconnect the lines.
13. Using a vacuum pump, evacuate the system to a low micron reading. The
typical evacuation time is approximately 3 minutes per ton.
14. Check the system for leaks, then recharge the system with refrigerant and oil
per the equipment manufacturer’s recommendations.
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