System Power Supply; Lcd Module; Sensor Module - Amico Alert-3 LCD v2.3 Operating & Maintenance Manual

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" button. The function of the "MUTE" button is to
silence an alarm that has occurred. By holding the "MUTE" button
for 20 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, master 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 alarm. The sensor module shall be housed
in an anodized aluminum and nickel-plated brass enclosure
to act as a barrier against interference 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 for the specific gas shown on the sensor housing.
For Annual Test
• Reset power to make sure the LCD Screen works and to check brightness
• Hold the MUTE button for twenty (20) seconds to display the current
low and high set points and the audible alarm
6 Amico Corporation
G
AC Supply
115 to 220 VAC
N
L
Toggle Switch
Fuse (1 AMPw)
DC Power Cable:
Connect to
Annunciator Module
L - Live
N - Neutral
G - Ground
Ground