Flushing of heating, ventilating and air conditioning systems us

Details Flushing of heating, ventilating and air conditioning systems us Flushing of heating, ventilating and air conditioning systems us

1991-09-27

1992-12-29

Dawson, Robert A.

Liquid purification or separation

Processes

Chemical treatment

210749, 210805, 62292, 62303, 134 2211, 134 2219, 252 67, C02F 168

Patent

active

051749068

ABSTRACT:
A solvent selected from the terpene hydrocarbon group and terpene alcohol group as a cleaning agent can provide effective cleaning of heating, ventilating and air conditioning systems which use hydrofluorocarbon or hydrochlorofluorocarbon or Freon refrigerants by using a solvent as described. Flushing through the refrigerant system condenser coils and evaporation coils removes any trace of excessive compressor lubricant which will be carried out with the solvent. The flushed materials carried out are biodegradable, thus are desirable from an environmental standpoint.

REFERENCES:
patent: 4887435 (1989-12-01), Anderson, Jr.
patent: 4934390 (1990-06-01), Sapp
patent: 5025633 (1991-06-01), Furmanek
patent: 5036675 (1991-08-01), Anderson, Jr.

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