Air conditioner monitor and alarm system

Details Air conditioner monitor and alarm system Air conditioner monitor and alarm system

2011-08-23

2011-08-23

Jules, Frantz F (Department: 3784)

Refrigeration

With indicator or tester

Condition sensing

C165S011100, C236S094000, C361S178000

Reexamination Certificate

active

08001797

ABSTRACT:
A monitor system for an air conditioning unit having a suction refrigerant line and a liquid refrigerant line. The monitor system has two low pressure sensors mounted on the suction refrigerant line; a high pressure sensor mounted on the liquid refrigerant line; a back-up battery; an AC transformer; an AC to DC converter board having three connection points; two double DPDT relays; a terminal board having terminals for connection to the converter board, the relays, a warning device and the pressure sensors. For commercial size air conditioning systems, the monitor system has two 12-volt back-up batteries; two AC transformers; two 16 AC to DC converter boards, and three double DPDT relays.

REFERENCES:
patent: 3778634 (1973-12-01), Hanrihan
patent: 4038061 (1977-07-01), Anderson et al.
patent: 5444436 (1995-08-01), Kennison
patent: 6184641 (2001-02-01), Crimmins et al.
patent: 7234313 (2007-06-01), Bell et al.
patent: 2006/0032245 (2006-02-01), Kates

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