Honeywell GasAlertMicro 5 User Manual page 95

Problem
Pump Operation Troubleshooting
Detector enters alarm with
LEL reading displaying as
over limit (OL).
Table 21. Troubleshooting
Possible Cause
There is an obstruction in the
tubing.
Filter needs to be cleaned or
replaced.
Pump is drawing too much air
over the sensors.
Pump flow rate is set too high.
If using tubing that is attached to the sample probe, determine if it is
obstructed. If not, clean or replace the pump filter. Refer to
Pump Filter.
Clean or replace the pump filter. Refer to
For newer model pump modules, the pump may be drawing too much air
over the sensors. Attach the auxiliary filter to reduce the flow. Refer to
Attaching the Auxiliary Filter.
Mode, scroll to the Pump option and press C.
1. From Tech
2. From the Pump Speed screen, press H to decrease the speed to 150.
3. Exit user options. The detector automatically initiates a pump test.
4. If the pump alarm persists, contact
GasAlertMicro 5/PID/IR
Troubleshooting
Solution
Replacing the
Replacing the Pump
BW Technologies by Honeywell.
Filter.
83