Bay Voltex PT-0550-AC Tempryte PT Air Cooled Chiller 5000 BTU 1.7GPM 115V R-12

Bay Voltex PT-0550-AC Tempryte PT Air Cooled Chiller 5000 BTU 1.7GPM 115V R-12

The Bay Voltex PT-0550-AC is an air cooled recirculating chiller from the Tempryte PT product line, designed to circulate temperature-controlled coolant to process equipment, lasers, or laboratory instruments. It uses a refrigeration-based cooling circuit with an internal compressor, air-cooled condenser, and a circulating pump to deliver chilled fluid to connected equipment via threaded fluid fittings on the rear panel. The front panel includes indicator lights for Unit Running, Temp High, and Level Low status.

Specifications & What's Included

• Model: Bay Voltex PT-0550-AC (Tempryte PT series)
• Cooling capacity: 5,000 BTU/hr at 20°C circulating coolant temperature, 80°F ambient air
• Flow rate: 1.7 GPM @ 50 PSI
• Power: 115V, 60Hz, 15A
• Refrigerant: R-12
• Cooling method: Air cooled (internal condenser with fan)
• Front panel indicators: Unit Running, Temp High, Level Low
• Fluid connections: Threaded "To Equip" and "From Equip" fittings on rear panel
• Form factor: Freestanding cabinet on casters
• Made in USA (Pleasanton, CA)
• Serial number: 13693R1191 (see photos)
• Missing: motor-to-pump connecting joint — unit is non-operational as a result
• Unit Running indicator lamp missing from front panel socket
• Coolant fittings show oxidation and thread wear
• Compressor, condenser coil, copper refrigerant lines, and wiring harness present internally

Applications

Recirculating chillers like the Bay Voltex Tempryte PT are used wherever a process or instrument requires a steady supply of cooled liquid — common applications include cooling laser systems (CO2, Nd:YAG, diode), analytical and laboratory instruments, plasma and RF equipment, CNC spindles, and semiconductor process tools. The PT-0550-AC's compact footprint and caster-mounted cabinet made it well suited for lab bench support or small process tool cooling in research and light industrial settings. Units of this type circulate a water or water-glycol mixture through the connected equipment and return the warmed fluid to the chiller's evaporator for re-cooling. The R-12 refrigerant identifies this as an older-generation unit from the era before R-12 was phased out in the early 1990s under the Montreal Protocol, which is relevant to any restoration effort. Replacement parts, including motor-pump couplings of this style, are sometimes available through industrial pump and chiller repair suppliers.