MARS 43307 Pressure Switch 320788-702 Dry vacuuming is the preferred

Dry vacuuming is the preferred method for the Trane FLR6465 Prefilter to prevent the reintroduction of moisture into the cabinet

If the flame sensor does not confirm combustion within these 7 seconds

consult the McDonnell & Miller technical manual for site-specific modifications

Reliable Performance: Featuring a mechanical life rating of 10 million cycles and an operating range of -30 to 140°F for harsh mechanical rooms

you ensure peak volumetric efficiency and prevent the mechanical stress associated with reverse rotation

MARS 43307 Pressure Switch 320788-702 Dry vacuuming is the preferredFinding a reliable replacement for high pressure cut out applications requires components that withstand rigorous cycling. The MARS 43307 Pressure Switch is a heavy duty, capsule type control engineered for HVACR system protection and compressor safety. This specific high pressure switch features an SPST open on fall configuration, calibrated for 400 PSI cut in and 300 PSI cut out. Rated for R 410A compatibility and other high pressure refrigerants,