English
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English
1. Introduction
This manual contains essential health and safety requirements (ESHR’s) and instruc
-
tions for the safe installation and use of the
Xgard
range of gas detectors.
Full instructions for commissioning, operation and maintenance along with spare parts
and warranty information can be found in the full manual available for download from
https://www.crowcon.com/uk/products/fixed-detectors/xgard.html.
2. Safety Information
•
Xgard
gas detectors must be installed, operated and maintained in strict accordance
with these instructions, warnings, label information, and within the limitations stated.
•
The lid on Exd certified versions of
Xgard
(Types 2-6 and IR) must be kept tightly
closed until power to the detector is isolated otherwise ignition of a flammable
atmosphere can occur. Before removing the cover for maintenance or calibra
-
tion purposes, ensure the surrounding atmosphere is free of flammable gases or
vapours.
•
Xgard
detectors are designed to detect gases or vapours in air, and not inert or
oxygen deficient atmospheres.
Xgard
oxygen detectors can measure in oxygen
deficient atmospheres.
•
Electrochemical cells used in toxic and oxygen versions of
Xgard
contain small
volumes of corrosive electrolyte. Care should be observed when replacing cells to
ensure that the electrolyte does not come into contact with skin or eyes.
•
Maintenance and calibration operations must only be performed by qualified ser
-
vice personnel.
•
Only genuine Crowcon replacement parts must be used, substitute components
may invalidate the certification and warranty of the detector.
•
Xgard
detectors must be protected from extreme vibration, and direct sunlight in
hot environments as this may cause the temperature of the detector to rise above
its specified limits and cause premature failure. A sunshade is available for
Xgard
.
•
This equipment must not be used in a Carbon Disulphide atmosphere.
•
Xgard
Types 2, 3, 5 & 6 and IR are certified for use in atmospheres that may
contain flammable dusts. They will not however detect the presence of flammable
dust, and the response of the gas sensor may be compromised by becoming
blocked in a dusty environment.
Xgard
detectors should be inspected regularly if
used in a dusty environment.
•
Xgard IR
will not detect hydrogen.
•
For Exd certified versions of
Xgard
(Types 2-6 and IR) cable glands with a sealing
compound must be used where Group IIC gases are likely to be present.
