Qwik™ System Flush® is used to flush contaminants such as residual oil, acid, or moisture from refrigeration line sets. If you can't replace refrigeration line sets after a burnout or R-22 to R-410a change out then you should use Qwik System Flush to remove residual contamination. See our application bulletin for in depth instructions on how to use Qwik System Flush.

Choose one of the QwikLinks below to view appropriate instructions

• Equipment Needed to Flush a System Using Qwik System Flush
• 3 Steps to Flushing a System Using Qwik System Flush (Aerosols)
• Instructions for Using Qwik System Flush (Aerosols)
• 4 Steps to Flushing a System Using Qwik System Flush (Liquid)
• Instructions for Using Qwik System Flush (Liquid)

The following equipment will be required for each flushing operation:

1. A 2 lb. aerosol can (QT1100) or a 1 lb. aerosol can (QT1130) of Qwik System Flush®. One 2 lb. can will clean up to a 10-ton refrigeration system. One 1 lb. can will clean up to a 5-ton refrigeration system.
2. Compressed nitrogen cylinder with pressure regulator
3. An empty container to catch the waste oil and impurities as they exit the system
4. A can access valve, such as Mainstream part number QT1105 or equivalent
5. A tube access fitting, such as Mainstream part number QT1110 or a flare fitting that can be brazed onto a cut lineset.
6. Refrigerant charging hose with ¼" flare terminations
7. Protective gloves and safety glasses

3 STEPS TO FLUSH A SYSTEM
USING QWIK SYSTEM FLUSH^®
AEROSOLS

WARNING: Never Connect Qwik System Flush to a Manifold Set or to a Nitrogen Tank! Can Will Explode if Pressurized!

Back to List

For best results, perform flush when system and the Qwik System Flush® (SF) canister are both above 50° F.

1. Use with adequate ventilation of at least 4 air changes per hour.
2. Whenever possible, arrange the flushing process so that the system is flushed from inside the structure to the exterior with the waste canister positioned outside the structure in the fresh air.
3. Disconnect electrical power to the unit being serviced.
4. As with any flushing product, the compressor, expansion device (TXV, capillary tube, etc.), and filter-drier(s) should be removed from any circuit to be flushed.
5. Position the waste container at the outlet of the flushing line. Ideally, this should be outside the structure in the fresh air.
6. Purge the system with nitrogen. Never use a nitrogen purging pressure above 100 psig. Always use a pressure regulator. The nitrogen purge will remove loose contaminates and waste oil, thus improving the effectiveness of the Qwik-SF®.
7. Create a slight restriction at the outlet of the flushing line.
8. Flush the system with Qwik-SF®. This is done by attaching the access valve to the Qwik System Flush® can and using a single charging hose between the can and the system. Do not use a charging manifold. Do not use any hoses that are also connected to the nitrogen pressure source to avoid accidently back-pressuring the can and causing the can to explode. Invert the can to ensure that the Qwik-SF® is introduced as a liquid.
9. Purge the system with nitrogen. Never use a nitrogen purging pressure above 100 psig. Always use a pressure regulator. This nitrogen purge will remove any final remaining liquids and contaminants.
10. Properly dispose of the waste oil and contamination with your other waste refrigerant oil.
11. Replace removed components, install a new filter-drier, and add a suction line filter-drier if there was a burn-out. Leak check the system, evacuate, and charge the system.
12. Verify proper operation. Use a QwikCheck® (QT2000) to test for any residual acid. Optionally, for added protection against acid and moisture, QwikShot® Acid Flush™ can be added to the operating system.

Back to List

4 STEPS TO FLUSH A SYSTEM
USING QWIK SYSTEM FLUSH^®
LIQUID

WARNING: Never Connect Qwik System Flush to a Manifold Set or to a Nitrogen Tank! Can Will Explode if Pressurized!

Warnings:

• Connecting a refillable injection tank to a nitrogen source can cause accidental back-pressurization of the canister even if the can access valve is closed. Always strictly follow manufacturer instructions for safe operation.
• Never use a system that does not have a pressure-relief valve installed.
• If Qwik System Flush® can is above 100°F, cool with running water prior to opening. Qwik System Flush® is heavier than air. Do not breathe dense concentrations of fumes. Product may cause asphyxiation and disorientation if used improperly.

Qwik System Flush® can be used with any liquid refillable flushing injector tank, simply follow the instructions provided by the manufacturer of the refillable Flushing Tank.

NOTES and CAUTIONS

1. Use with adequate ventilation of at least 4 air changes per hour.
2. Wear protective gloves and safety glasses at all times.
3. Disconnect electrical power to the unit being serviced.
4. If possible, flush the line set from inside to the waste container outside.
5. As with any flushing product, the compressor, expansion device, and filter-drier must be removed from the circuit being flushed.
6. Create a slight restriction at the outlet of the flushing line to slow the progress of the Qwik System Flush® and extend the length of time it remains in the system.
7. Never use nitrogen pressure above 50 psig and always use a pressure regulator. Qwik System Flush® is very effective at this pressure, higher pressures are not necessary.
8. Always use an injector tank with a pressure relief valve. A typical tank may be filled with up to 24 oz. of Qwik System Flush®, but may require much less, for a single flushing operation.
9. Properly dispose of the waste oil and contaminates with your other waste refrigerant oil.
10. Proper evacuation before charging will remove any trace of Qwik System Flush® from the system.
11. Replace removed components, install a new filter-drier, and add a suction line filter-drier if there was a burn-out. Leak check the system, evacuate and charge the system.
12. Use a QwikCheck® (QT2000) to test for any residual acid. Optionally for added protection against acid and moisture, QwikShot® Acid Flush (QT2500) can be added to the operating system.

Back to List

QT1100/QT1130/QT1150

QT1140

CLICK BELOW
TO REQUEST INFORMATION