Cornelius 322 manual Refrigerant Definitions Ashrae

The system should be evacuated to approximately 200/250 microns. Then perform a 5 minute holding test. You may expect a low grade loss of the vacuum as normal. However, a rapid rise to normal atmospheric pressure would signal a system leak is present and must be located and repaired before recharging the product. A slower pressure rise to approximately 1500 microns would signal moisture still present in the refrigeration system.

On a “WET”system, it would be beneficial to use heat lamps to raise the temperature of the compressor dome and evaporator surface area during the evacuation.

To assure a properly recharged product, the refrigerant charge must be weighed into the product using an elec- tronic charging scale or dial-a-charge. On air- and water-cooled products the charge should be introduced into the high side service valve. On remote systems, the charge should be introduced into the product receiver.

	MANIFOLD SET
OPEN	OPEN
	OPEN
	HIGH SIDE
	SERVICE
	VALVE
	LOW SIDE
	SERVICE
	VALVE

	MANIFOLD SET
OPEN	CLOSED
	CLOSED
	HIGH SIDE
	SERVICE
	VALVE
	LOW SIDE
	SERVICE
	VALVE

CLOSED

CHARGING

CYLINDER

OPEN

VACUUM

PUMP

CLOSED

ELECTRONIC

SCALE

CLOSED

VACUUM

PUMP

OPEN

CHARGING

CYLINDER

OPEN

ELECTRONIC

SCALE

IMPORTANT: Service personnel are held responsible for ALL ASPECTS OF THE CLEAN AIR ACT OF JULY, 1992.

REFRIGERANT DEFINITIONS (ASHRAE 3-1990)

RECOVERY

To remove refrigerant in any condition from a system and store it in an external container without necessarily testing or processing it in any way.

RECYCLING

To clean refrigerant for reuse by oil separation and single or multiple passes through devices, such as replace- able core filter-driers, which reduce moisture, acidity, and particulate matter. This term usually applies to proce- dures implemented at the field job site or at a local service shop.

RECLAIM

To reprocess refrigerant to new product specifications by means which may include distillation. Will require chemical analysis of the refrigerant to determine that appropriate product specifications are met. This term usu- ally implies the use of processes or procedures available only at a reprocessing or manufacturing facility.

NOTES REGARDING RECLAIM:

“New product specifications”currently means ARI standard 700-88. Note that chemical analysis is required to assure that this standard is met.

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