EMS 1304, Инструкция по установке и эксплуатации

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Trouble Shooting
Problem Possible Cause Remedy
Control unit reads 100%, both bargraphs are
blinking, Alarm LED is on, Fault message
T2 4-20mA lost/low, service module meter
in T2 reads -20 or higher.
Transceiver current loop
to the control unit is open Operate/test switch must be in
Operate.
Check wiring for open from
Terminal 17 & 18 on control unit to
terminal 17 & 16 at service module
location.
Alignment is good but control unit reads
high opacity or erratic in normal, zero &
span mode, service module meter in opacity
reads high or erratic.
1- Reference voltage TP-2
on signal processor 1667
is lower than 9.3V
2- Main lamp out
1- Adjust lamp drive PT-2 on the
power modulator 1668 until
Reference voltage TP-2 on signal
processor 1667 is 10.0 Volts.
2- Replace main lamp assembly
Control unit reads High, zero/span values
are OK
1- Smoke
2- Alignment is out 1- Correct process
2- Adjust alignment until centered
on target.
High dust alarm and /or cal fail cal message Transceiver window
and/or zero mirror is dirty
Clean window and or zero mirror
Control unit reads High, zero/span values
are OK, alignment is good Dirt built up in flanges Swing open transceiver & Retro.
Clean flanges with push rod.
Air purge fault message No or low air flow Replace air blowers as necessary
Replace air filters as necessary
Tighten hose clamps as necessary
No stack power fault message Service module lost power
or failed
Check power, check SM fuse.
Replace as needed