Ion Science GasCheck IS - Manual (Page 33)

GASCHECK 5000IS MANUAL Ion Science Ltd
Page 33 of 40 Unrivalled Detection. www.ionscience.com
Maintenance
Inspect and clean the Gas Check
Switch off the Gas Check.
Refer to Figure 5. If the nozzle is fitted, hold the nozzle (1) by its wide base and gently twist and pull it to
remove it from the Gas Check.
With the small end of the box spanner towards the Gas Check, guide the end of the probe (2 or 7) through
the middle of the box spanner. Push the box spanner onto the nut (3) and turn the box spanner anticlockwise
to undo and remove the probe.
Inspect the Gas Check. If the case of the Gas Check is cracked is cracked or dented, we recommend that
you do not continue maintenance, but return the Gas Check to your supplier for inspection and calibration.
Wipe the Gas Check with a clean, lint-free cloth moistened with a weak solution of detergent.
Carefully wipe the outer faces of the probe/nozzle fitting to remove any small particles of dirt or debris.
Use a suitable tool to push any blockage out of the end of the nozzle, then wipe the outside of and the inner
face of the wide part of the nozzle.
Inspect the probe:
The hole in the short probe is approximately 0.47mm (0.0185inches) in diameter. We recommend that you
push stiff wire of 0.25mm (0.01inches) diameter or less into the hole in the probe to remove any blockage.
The long probe is too long to be effectively cleaned. If the probe is blocked, we recommend that you obtain a
new probe, available as a spare.
Refit the required probe to the Gas Check.
Place a light wipe of thin petroleum jelly around the inner face of the wide part of the nozzle, then fit the
nozzle to the Gas Check.
Place the Gas Check and nozzle (and the long probe, if just removed) in its storage case. Store the case in
suitable conditions.
CAUTION
Do not clean the probe while it is attached to the Gas Check and do not try to clean the sample
hole inside the probe/nozzle fitting which leads to the detector. If you do, you can damage the
Gas Check.