Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 57)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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7. Maintenance Instructions
7.1 General Maintenance
The SafEye system requires only simple periodic maintenance to provide
satisfactory service and achieve maximum performance. The Detector and
Source units can be maintained with the use of common tools and equipment.
Record the periodic test results in a Maintenance Logbook with a copy of the
delivery form inside.
Note
The maintenance can be performed through RS-485, for more details refer to
TM792050.
7.2 Periodic Maintenance
Recommended cleaning of optical surfaces to be performed periodically.
Note:
The frequency of cleaning operations is ultimately dependent upon
the existing environmental conditions and the applications used.
1 Proper maintenance will allow the SafEye system to retain maximum
performance and reliability.
2 The optical surfaces of the Source and Detector viewing windows should be
kept as clean as possible as it is an active device.
3 Alignment procedures must be performed each time that the Source or the
Detector unit has been opened or moved for any reason.
4 The Signal Verification Check corroborates the current signals from the Light
Source compared to that of previous alignments. It is recommended to
perform this check every 6-12 months. The signal should be checked
according to threshold levels (see. 7.2.2).
5 The functional check should be performed every 6 months (see 6.7)
6 Zero calibration (see 6.6) must be done every time the Detector or Source is
realigned or windows cleaned.