MSA SIRIUS Instruction Manual page 46

7 Warranty, Maintenance, and Troubleshooting
Table 4. Troubleshooting Guidelines
PROBLEM
Does not turn ON
Battery does not hold charge
Combustible sensor
does not calibrate
Oxygen sensor does not calibrate
Toxic sensors does not calibrate
Ion Error
PID Error
Failed Span Cal Error (on PID)
PID Comm Error
PID bulb/Cal now
PID sensitivity to humidity
Noisy PID Reading
CO sensor spurious signal
at high temperature
Pump Alarm
Sensor missing
In all of the above cases and for any other problems, The SIRIUS Multigas Detector may
be returned to MSA for repairs.
46
ACTION
Recharge (if applicable) or replace battery.
See 3.1 Power Systems
See 3.1 Power Systems
See 6. Calibration
See 6. Calibration
See 6. Calibration
Check that the ion chamber is not installed upside
down. See 7.4 Replacing Ion Chamber
Check that ion chamber is installed. Clean or
replace bulb if within normal temperature range. If
temperature too cold, allow instrument to stabilize
within normal temperature range before turning ON.
Clean or replace bulb.
See 7.3 Removing and Cleaning the PID Bulb
Send instrument to authorized service center
for repair.
Clean or replace bulb and recalibrate instrument.
See 7.3 Removing and Cleaning the PID Bulb
Clean or replace bulb/replace ion chamber.
See 7.3 Removing and Cleaning PID Bulb/
7.4 Replacing Ion Chamber
Clean or replace bulb/replace ion chamber.
See 7.3 Removing and Cleaning PID Bulb/
7.4 Replacing Ion Chamber
Over exposure to isobutylene or other interferent
gases. Allow sensor to clear for 24 hours or
replace CO sensor.
See 7.9 Sensor Replacement
Check for leaks/blocks, replace dust and water
filters. See 7.5 Replacing Filters
Check installation of sensor/replace sensor.
See 7.9 Sensor Replacement