MEI part description

The MEI Trinary Pressure Switch 1550 is found on systems that are equipped with radiatior shutters and/or electric or air fan clutches. This switch perform three functions, it prevents compressor operation if system has refrigerant loss, or ambient temperature drops too low. It prevents compressor operation if high side pressure rises too high, it then automatically resets when pressure drops to normal. And lastly it overrides shutter/fan control to keep head pressure within normal range.



PRODUCT SPECIFICATIONS:

  • MEI Part No.: 1550
  • AirSource: 1550
  • Alliance: 318009, 318039
  • Kysor: 2299004, 404171
  • MACK: 1MR2380, 1MR3439
  • FOUR SEASONS: 35899 
  • MACK: 4379-RD5-3595-0, 4379-RD5-4585-0
  • Murray: 207076
  • Navistar: 1691699C91, 1691699-C91
  • Truck Air: 11-2625
  • WESTERN STAR: 02-2750417
  • OEM Number: RD5-4585-0
  • Manufacturer: Red Dot
  • Application: Red Dot - Multi Applications
  • 4 Terminal
  • Refrigerant: R12/R134a
  • Volts: 12/24V
  • Open: 22-325
  • Close: 40-230
  • Normally Open
  • Thread: 1/4 in. Male

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