Ion Science GasCheck IS - Manual (Page 21)

GASCHECK 3000 & 3000IS MANUAL Ion Science Ltd
Page 21 of 28 Unrivalled Detection. www.ionscience.com
Maintenance
Inspect and clean the GasCheck
1. Switch off the GasCheck.
2. 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 GasCheck.
3. With the small end of the box spanner towards the GasCheck, guide the end of the probe (2 or 7)
through the middle of the supplied box spanner. Push the box spanner onto the nut (3) and turn the box
spanner anticlockwise to undo and remove the probe.
4. Inspect the GasCheck. If the case of the GasCheck is cracked or dented, we recommend that you do not
continue maintenance, but return the GasCheck to your supplier for inspection and calibration.
5. Wipe the GasCheck with a clean, lint-free cloth moistened with a weak solution of detergent.
6. Carefully wipe the outer faces of the probe/nozzle fitting to remove any small particles of dirt or debris.
7. Use a suitable tool to push any blockage out of the end of the nozzle, and then wipe the outside of and
the inner face of the wide part of the nozzle.
8. 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: refer to section 7.
9. Refit the required probe to the GasCheck: refer to Steps 4 to 6 in Section 4.4.2.
10. 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 GasCheck.
11. Place the GasCheck and nozzle (and the long probe, if just removed) in its storage case. Store the case
in suitable conditions: refer to Section 6.1.
CAUTION
Do not clean the probe while it is attached to the GasCheck 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