Epa 608 stuvia - Study guides, Class notes & Summaries

When using recovery or recycling equipment manufactured or imported on or after Nov 15, 1993, the required level of evacuation for low pressure equipment is _____ Hg absolute: 30mm 25mm 15mm 20mm - ANSWER 25mm The EPA requires that all commercial and industrial process refrigeration systems with more than 50lb of refrigerant be repaired when the annual leak rate exceeds ______: 35% 15% 30% 25% - ANSWER 35% Open-drive compressors are typically _____ compressors centrifugal r...

technicians maintaining, servicing, repairing, or disposing of low-pressure appliances must be certified as: - ANSWER Type III or Universal Technician the owner &/or operator of the equipment is responsible for keeping: - ANSWER records including: leak inspections & any completed leak repair verification tests it's the _______ &/or ___________ responsibility to obtain service records from the servicing company doing any work on an appliancem - ANSWER owner &/ or operator as of 11/14/94...

Identify the pressure corresponding to 32 degrees F for R-123: ________. a) 23 inches of Hg vacuum b) 20 inches of Hg vacuum c) 17 inches of Hg vacuum d) 11 inches of Hg vacuum - ANSWER b) 20 inches of Hg vacuum A hydrostatic tube test kit is used to: _________. a) blow all water from the tubes b) remove any water from the machine c) vent refrigerant d) determine if a tube leaks - ANSWER d) determine if a tube leaks Excessive running of a purge system on a low pressure chiller ...

A typical setting for the high pressure cut-out control on a recovery unit used for evacuating the refrigerant from a low pressure chiller is: - ANSWER C) 10 psig. A charged low pressure refrigeration system can be efficiently leak checked by: - ANSWER D) raising system pressure by heating with circulated hot water or heating blankets. The existence of air in a low pressure system, causes __________. - ANSWER C) high head pressure. Which safety precaution should be adhered to for low pr...

If regulations change after the technician becomes certified.........? - ANSWERThe technician is responsible for complying with any changes to the regulations System-dependent recovery methods may only be used on appliances containing......? - ANSWER15 pounds of refrigerant or less Which HC refrigerant is allowed for use in New Domestic Small Appliances......? - ANSWERR-600A When filling a charging cylinder with a regulated refrigerant.......? - ANSWERThe refrigerant vapor that is vente...

On low pressure chillers, moisture typically enters the refrigerant system through - ANSWER air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - ANSWER 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller - ANSWER ... A hydrostatic tube test kit is used to: - ANSWER determine if a tube leaks Commercial and industrial process refrigeration systems must be repaired wh...

Before recovering refrigerant from a chiller suspected of having tube leaks,... - ANSWER ...drain the water sides of the evaporator and condenser. Draining the water sides helps to avoid the introduction of additional water into the system cause by the evacuation process and to prevent the water from freezing as the refrigerant evaporates during recovery. How can you pressurize a low-pressure chiller to make a non-major repair? - ANSWER Warm up the system. Under EPA regulations, you may wa...

Where do leaks commonly occur in low pressure systems? a. Evaporator b. Condenser c. Purge unit d. Gaskets or fittings - ANSWER d. Gaskets or fittings Where do leaks commonly occur in open-drive type compressor systems? a. Evaporator b. Condenser c. Shaft seal d. Cooling tower - ANSWER c. Shaft seal Does refrigerant go out of the system in low pressure systems or does air and moisture go in? a. Refrigerant escapes through low pressure leaks. b. Air and moisture enter the refrige...

Techs maintaining, servicing, repairing, or disposing of low pressure appliances must be certified as? - ANSWER Type III or universal technician As of what date was the sale of CFCs and HCFCs restricted to certified techs? - ANSWER Nov 14, 1994 Who is responsible to comply with changes in section 608? - ANSWER The technician Because low pressure systems operate in a vacuum , where will leaks occur? - ANSWER Gaskets or fittings (allow air or moisture into the system? What is the most ...

a Type III Technician or Universal Technician are certified to do what? - ANSWER Maintain, service, repair, or dispose of low-pressure appliances. Most low pressure appliances are used for what? - ANSWER Most low pressure appliances are used for comfort cooling and are subject to lower allowable leak rate. The owner and/or operator of the equipment is responsible for what? - ANSWER for keeping records of all leaking inspections and any completed leak repair verification tests. It is their ...