Section 250-RICR-120-05-23.8 - Specifications for Refrigerated Condensers and Drying SensorsA. Refrigerated condenser and drying sensors operated to comply with § 23.7 of this Part shall adhere to the following specifications: 1. The outlet temperature of the air-vapor stream downstream of any by-pass of the refrigerated condenser shall not exceed forty-five degrees Fahrenheit (45°F) during the final cool-down cycle. The door of the dry cleaning machine shall not be opened until the temperature of the stream is at or below forty-five degrees Fahrenheit (45°F), as indicated by a temperature gauge meeting the specifications of § 23.8(A)(2) of this Part;2. A dry cleaning system with a refrigerated condenser must be equipped with a temperature gauge that measures the temperature of the outlet vapor stream downstream of any by-pass of the condenser and that is easily visible to the operator. The temperature gauge must be designed to measure a temperature of forty-five degrees Fahrenheit (45°F) with an accuracy of ± two degrees Fahrenheit (2°F);3. Dry cleaning equipment equipped with a refrigerated condenser shall not vent or release the gas-vapor stream while the drum is rotating;4. Refrigerated condensers shall be certified by the manufacturer to reduce the perchloroethylene concentration in the drum to no more than eight thousand six hundred (8600) ppm upon completion of the drying cycle.5. Drying sensors shall extend the drying time in the drying cycle at least four (4) minutes beyond the time that the solvent recovery rate is less than forty (40) ml/min or the solvent concentration in the drum is less than eight thousand six hundred (8600) ppm perchloroethylene;6. Refrigerated condensers on machines equipped with a door fan/local exhaust must be operated with a diverter valve which prevents room air from passing through the condenser when the door of the dry cleaning machine is open; and7. The machine operator shall record the temperature of the air-vapor stream as measured by the temperature gauge at least one time each calendar week.250 R.I. Code R. 250-RICR-120-05-23.8
Amended effective 12/24/2018