Low Air Pressure Switch

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Low air pressure switch.

An air switch senses positive negative or differential air pressure and actuates an internal switch. Refrigerant does not wear out or evaporate. Cdn 39 78 cdn 39. Only leaking air conditioning systems have low refrigerant levels.

When air pressure falls below a predetermined minimum the switch will close to turn on a warning buzzer and or lamp. Get it as soon as fri sep 25. 3 9 out of 5 stars 5. If the pressure is tool low then the risk is that the compressor can burn out.

This protects the compressor from damage. More buying choices cdn 39 57 5 new offers. This is actually very important because if the pressure is too low or too high it can cause serious damage to the ac system. The switch marked with the word low is set to operate at a pressure decrease of 10 psi 7 bar at 30 psi 2 1 bar.

4 6 out of 5 stars 46. The low pressure indicator is installed in the truck s service brake system. Its main job is monitor the pressure of the refrigerant on both the low and high pressure sides of the system. 55 1 57 oz 34 29 34 29.

Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners duct heaters humidifiers exhaust fans and duct booster fans. Dry pipe systems pre action air nitrogen supervision pressure tanks air supplies and water supplies. The ps40 switch is factory set for 40 psi 2 8 bar normal system pressure. An automotive air conditioner s pressure switch cycles the vehicle s compressor on and off when the refrigerant pressure falls below an acceptable level.