Appion WS260 Panduan Pengoperasian - Halaman 9

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Refrigerant Recovery Tips

Preparing a Cylinder for Recovery

Prior to beginning recovery, the cylinder should always be evacuated with a vacuum pump. A

deep vacuum of 500 microns or better is recommended as this eliminates the possibility of non-

condensables as well as improves the initial refrigerant transfer. Always verify with a digital vacuum

gauge to ensure you have hit the target. Note: new recovery cylinders may not be sufficiently

evacuated - always verify before use.

Preparing for Fast Refrigerant Recovery

Every recovery procedure starts with the same four basics:

•

Remove any access valve cores from the AC/R System access fittings with a Valve Core Removal

Tool. This removes restrictions that would otherwise limit the performance of the recovery machine

and/or cause overheating of the recovery cylinder.

•

Remove any core depressors from the hose fittings. Do not use "quick disconnect" or "auto-shutoff"

hose connections for refrigerant recovery, as this can bring the recovery to a halt. Use only ball valves

for low-loss.

•

Use the shortest length of 3/8"-diameter hoses possible on every connection. Even with 1/4"

fittings, the larger hose diameter can deliver better performance during recovery.

•

Purge the hoses of non-condensables as you connect them, as needed, using best practices

to minimize any refrigerant release (aka "de minimis"). Excess non-condensables can cause tank

overheating, and may contaminate recovered refrigerant.

✪

Tip: Consult the manufacturer of your Refrigerant Recovery Machine for setup guidance.

: Visit www.AppionTools.com/FullFlow to learn more

Additional Equipment Considerations

Refrigerant recovery requires - and can often benefit from specific use of - additional equipment that

connects the recovery machine to the system and recovery cylinder. Verify operational details and

safety information from the manufacturers of other equipment before use.

•

⚠ CAUTION

A leaking hose may cause venting of refrigerant, and may introduce atmospheric air

or other contaminants into the recovered refrigerant. Examine the gaskets on each hose to ensure

they are intact, checking for any damage or wear that may lead to leaks.

•

Valve Core Removal Tools with a ball valve (such as Appion MegaFlow VCRT) can be used as high

flow low-loss fittings, in addition to the main function of removing valve cores.

•

The recovery cylinder should have extra capacity beyond the amount you intend to recover.

•

Examine your external manifold gauges (if used) for proper valve operation and calibration of the

gauges. Contact the manifold gauge manufacturer for instructions in this process. Note: Appion

does not recommend the use of a manifold gauge set on most systems due to restriction of flow &

refrigerant loss.

•

Use a new inline filter dryer when pumping dirty refrigerant. Replace the filter dryer after each use. If

the filter has exceeded its capacity, this may affect the performance of the recovery machine.

•

Use a sight glass to verify liquid flow. This can also be useful for troubleshooting purposes. Make

sure that the sight glass is in good condition and does not leak.

WS260 OPERATION MANUAL

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