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V
Electrical System Components
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TEMPERATURE
SWITCH
(Thermal Switch)
(Reference #32)
A temperature switch is provided to shut off the air compressor in the event of high
cabinet temperature. This protection is provided mainly to protect the unit in the
event of cabinet ventilating fan failure or a blocked ventilating air intake/exhaust.
AIR COMPRESSOR
(Reference #20)
A twin cylinder air compressor with an integral split phase, capacitor run, electric
motor is provided, supplying compressed air for the oxygen concentration process.
RED LIGHT (only for Base Models)
(Reference # 50)
A red LED is provided to indicate an alarm condition. The 9-volt DC battery powers
this light.
When units are equipped with the OCSI option the red lamp functions
are provided by a circuit board mounted red indicating lamp.
GREEN LIGHT (only for Base Models)
(Reference #49)
A neon AC green lamp is provided to indicate that the unit is properly powered.
When units are equipped with the OCS! option the green lamp functions are
provided by a circuit board mounted green indicating lamp.
OCS] CIRCUIT BOARD (optional)
(Reference #51)
The OCSI system is an on board oxygen sensing system that utilizes an ultrasonic
sensing technique to determine the oxygen concentration in the product stream.
Included on this circuit board are the indicating lights for: low battery and alarm
functions (red light), low oxygen concentration (yellow light}, and power on (green
light). If the oxygen concentration is 85%
or higher the green lamp is lit, if between
70%
and 85% the yellow lamp is lit, and if the oxygen concentration falls below
~
70% the red lamp will light.
See section VIII Service Instructions, for calibration of
the OCSI.
」
MESSENGER
CONTROL BOARD
(optional)
(not shown)
*
The Messenger Control Board interfaces with the OCSI board.
The Messenger
system provides a means of remotely monitoring the Breeze operation via a
telephone/computer interface.
This circuit board carries various power and signals.
Page 11
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