Operation; Introduction - Teledyne 1220 Instruction Manual

Multi-Channel Combustible Monitor
4.1
Once the System has been Installed, check all wiring to make certain
that it is correct. Check that the POWER switch on the Control Unit is in
the "OFF" position, then apply primary power to the system. Continue
start-up as follows:
1. Check that AUDIBLE ALARM switch is set to BYPASS mode
2. Set the Control Unit POWER switch to ON. The green power
3. The Channel Modules are shipped with the ZERO and SPAN
4. After verifying that the Control Unit, and each Channel Module

Operation

Introduction

on the Control Unit.
lamp and red bypass lamp should be illuminated. All the green
Power LEDs on the channel modules should be illuminated.
Each channel goes thru the process of a self-diagnostics test for
the following:
Checks the power supply 5V output
Checks the power supply +/-15V outputs
Checks the power supply +/-12V outputs
Checks the analog outputs
Checks for one sensor or two sensor mode
Checks for sensor installation
Checks that the ADC is responding
preset, and the alarm setpoints at 50% and 80% LEL (Lower
Explosive Limits). The Channel Module relays revert to normal
state after start-up.
are operating normally, allow the system to stabilize over a 24
hour period.
Teledyne Analytical Instruments
Operation 4
4-1