Routine Maintenance; Changing Gas Types - Crowcon IRmax Instructions D'installation, D'utilisation Et De Maintenance

3.2 Routine maintenance

Site practices will dictate the frequency with which detectors are tested. Crowcon
recommends that IRmax is gas tested at least every 6 months and re-calibrated as
necessary. To re-calibrate an IRmax follow the steps given in Section 3.1.
In the event of an electronic failure please consult your local Crowcon representative.
Calibration interval:
Remote calibration via pipe:
Cleaning of optics:
Mirrors:

3.3 Changing gas types

Each IRmax is supplied pre-calibrated for a particular type of gas (for example methane
or propane). If re-calibration for a different gas type is required, the IRmax can be
re-configured using the PC communications kit (see Section 5, Accessories and spare
parts on page 16), and then calibrated.
Detecting Gas Saving Lives
Crowcon recommend calibration every 12 months.
Wind speed should be less than 2.0 metres per second. If
greater, use the calibration cap to prevent gas dilution.
Is not recommended unless the IRmax is in obscuration
fault. If the window or mirror become contaminated, clean
carefully with the IPA impregnated wipes and/or the soft
cloth supplied in the mirror cleaning kit (see Section 5,
Accessories and spare parts on page 16).
If the mirror is damaged, obtain a mirror replacement
kit (see Section 5, Accessories and spare parts on
page 16). The IRmax must always be re-zeroed and
re-calibrated after mirror replacement.
If condensation starts to cause faults replace mirror
(optical coating may be damaged). Crowcon recommends
replacing mirror every 5 years.
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3. Operation