Ion Science GasCheck IS - Manual (Page 24)

GASCHECK 3000 & 3000IS MANUAL Ion Science Ltd
Page 24 of 28 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)
Display appears blank/dim Contrast control setting wrong Turn off & on; press & hold contrast
Numbers do not change Peak hold selected Press zero or change from Peak hold
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
Blocked probe Probe blocked Remove probe and clean
Stalled motor Motor failed & probe not blocked Return to Ion Science for repair
Instrument readings noisy Loose probe Tighten nut slightly
Instrument readings noisy Test environment contaminated Move item under test into cleaner area
3000is unit will not turn on Internal fuse blown Return to supplier for repair
Table 5 – Fault finding