7Chapter 2 Safety and Information
Searchline Excel™ Plus / Searchline Excel™ Edge – Technical Manual
2 Safety and Information
2.1Warnings and Cautions
1. Searchline Excel Plus & Searchline Excel Edge Open Path Flammable Hydrocarbon Gas Detectors are certified for and
intended for use in potentially hazardous areas. Installation, operation and maintenance of the instruments must meet
requirements on safety and operation in hazardous areas.
2. Installation must be in accordance with the recognized standards of the appropriate authority in the country
concerned. For Europe see EN 6007914 and EN 60079292.
3. For installations in the UK, the Code of Practice SELECTION, INSTALLATION AND MAINTENANCE OF ELECTRICAL
APPARATUS FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES should be strictly observed. General
recommendations are given in BS EN 6007914 & IEC 6007914. Refer to BS EN 60079292 & IEC 60079292 in
the UK or the appropriate local or national regulations.
4. For installations in North America, the National Electrical Code (NFPA 70) or later issues should be strictly observed.
5. Searchline Excel Plus & Searchline Excel Edge Open Path Flammable Hydrocarbon Gas Detectors must be properly
earthed to protect against electrical shock and minimise electrical interference. For electrical installation design
considerations refer to Chapter 6 Electrical Installation.
6. Operators must be fully aware of the action to be taken if the gas concentration exceeds an alarm level.
7. Dismantling or repair of equipment should be carried out in the safe area only.
8. Test gases may be toxic and/or combustible. Refer to Material Safety Sheets for appropriate warnings.
9. Do NOT drill holes in any housing as this will invalidate the explosion protection.
10. In order to maintain electrical safety, the instruments must NOT be operated in atmospheres containing more than
21% oxygen.
11. Ensure that the bolts which secure flame-proof enclosures are fully tightened. The securing bolts used are made from
a special certified grade of steel. Only bolts supplied by Honeywell Analytics should be fitted for this purpose.
12. Do NOT open the enclosure in the presence of an explosive atmosphere.
13. The transmitter units contain high voltages when operational. These are discharged when the unit is removed from its
enclosure.
14. The conduit and cable glands fitted to Searchline Excel should NOT be modified. If, however, it becomes necessary to
make modifications they must comply with the relevant national Codes of Practice.
15. The irradiance and power emitted by the Searchline Excel transmitters is less than 5 mW/mm2 and 15 mW/mm2
respectively. This is designated as eye safe.
16. The equipment is NOT intended to be mounted onto surfaces which may act as sources of heating or cooling.
17. Do NOT operate the instruments outside the temperature range stated in the Specification chapter.
18. Do NOT open the front enclosures. Doing so will invalidate the warranty. Front enclosures may be opened only for
advised repair maintenance by a Honeywell-authorized and qualified person.
19. Do NOT modify or alter the construction of the product as essential safety and certification requirements may be
invalidated.
20. Installation, set-up and maintenance must be conducted only by trained personnel. Refer to the manual at all times.
21. Access to the interior of the product, when carrying out any work, must be conducted only by trained personnel.
22. The plastic transport cap supplied must be replaced with suitably certified closers (such as glands or stopping plugs)
prior to commissioning. Failure to do so presents a potential source of ignition. One certified stopping plug is supplied
as standard.
23. Do NOT rely on the local visual indicator for safety related purposes.
NOTE:
If the last connection and synchronization between the Honeywell Fixed Platform App and the server was established
more than 1 year previously, a caution message will be shown in the App with request to establish an Internet connection and
renew security certificate. This will NOT affect instrument’s operation.
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