Amico Alert-3 LCD Alarm - Manual (Page 6)

6 Amico Pipeline
Description of Modules
The Alert-3 LCD Alarm is a high technology microprocessor based module:
COMMON TO ALL ALARMS
SYSTEM POWER SUPPLY
The System Power Supply has been pre-installed into the back box assembly. The System Power Supply converts the
AC voltage supply to the alarm into two voltages: 5 VDC (regulated) required by the microprocessor hardware and 15
VDC (unregulated) required by the buzzer and the LCD. This unit also contains the main ON/OFF power switch, the
transformer, the heat sink, the main fuse and fuse cover, the rectifying circuitry, the terminal blocks and the low voltage
DC power cable for connecting this unit to the module. The System Power Supply can be easily removed and reinstalled
by unscrewing it from the back box.
LCD MODULE
The LCD Module contains the LCD screen, microprocessor, buzzer and the “MUTE” buttons. The function of the “MUTE”
button is to silence an alarm that has occurred. By holding the “MUTE” button for 15 seconds, the module will display
the high and low pressure set points. This module also contains a fail-safe relay that de-energizes when the buzzer
is activated. This relay can be used with the Amico Remote Buzzer for applications requiring a remote audible alarm or a
Building Management System.
SENSOR MODULE
The Sensor Module contains the transducer which converts the source of the pressure/vacuum into a digital signal that
is displayed on the LCD module. The sensor module shall be housed in an anodized aluminum and nickel-plated brass
enclosure to act as an interference barrier and it is temperature compensated. Each sensor is clearly labeled and color
coded for the gas or vacuum being monitored. The sensor module contains a gas-specific DISS fitting to ensure correct
connection of the proper sensor to the respective gas. Each sensor has been factory calibrated by computer for the
specific gas shown on the sensor housing.