Ion Science GasCheck IS - Manual (Page 36)

GASCHECK 5000IS MANUAL Ion Science Ltd
Page 36 of 40 Unrivalled Detection. www.ionscience.com
Maintenance
Fault finding
Fault symptom Diagnosis Action
Unit will not switch on No/dead batteries fitted Try another battery set (safely)
Unit will not switch off Software locked out Remove & replace battery clip
(safely)
Battery symbol appears Battery state low Replace batteries (safely)
Back light drains battery
life Excessive use of backlight Avoid or reduce use of backlight
Unit will not zero Software locked out by
hardware Remove & replace batteries (safely)
LCD appears blank/dim Contrast control setting wrong Turn off & on; press & hold contrast
Bar graph/number do not
change Peak hold selected Press zero or change Peak Hold
state
Range does not change Range not set in Auto-range Press & hold Range until Auto-range
He range will not show –5 Unit with nozzle ON and/or
range
Reset via Nozzle and Range keys
Gas group is wrong Gas Group not set correctly Press & hold Gases until shown OK
Nozzle/Peak not showing Nozzle/Peak is not set
correctly Press & hold Nozzle until both
correct
Calibration due message Unit has exceeded 1 year on
cal Return to Ion Science for
recalibration
Unit will not zero correctly Sensor contaminated Leave to stabilise
Blocked probe Probe blocked by solid or
liquid Remove probe; clean; check now OK
Stalled motor Motor failed & probe not
blocked Return to supplier for repair
Instrument readings noisy Loose probe Tighten nut slightly
Instrument readings noisy Test environment
contaminated
Move test into clean area
5000is will not switch on Internal fuse blown Return to supplier for repair
Table 5 – Fault finding