l The combustible sensor is factory calibrated to 50% LEL methane. If monitoring a
different combustible gas in the % LEL range, calibrate the sensor using the appropriate
gas.
l Warning: High off-scale LEL readings may indicate an explosive concentration.
l Only the combustible gas detection portion of this instrument has been assessed for
performance by CSA International.
l For use only in potentially explosive atmospheres where oxygen concentrations do not
exceed 20.9% (v/v).
l Any rapid up-scaling reading followed by a declining or erratic reading may indicate a
gas concentration beyond upper scale limit, which may be hazardous.
l Calibrate only in a safe area that is free of hazardous gas.
l Use only Honeywell approved batteries for the MaxXT II detector. Refer to Replacement
Parts and Accessories.
l Charge the detector before first-time use. Honeywell recommends the detector be
charged after every workday.
l Charge the BW MaxXT II using the recommended charging adapter only. Do not use any
other charging adapter. Failure to adhere to this precaution can lead to fire and/or
explosion. Read and adhere to all instructions in the charger guide. Failure to do so can
result in fire, electrical shock, personal injury, and/or property damage.
l Extended exposure of the BW MaxXT II to certain concentrations of combustible gases
and air may stress a detector element, which can seriously affect its performance. If an
alarm occurs due to high concentration of combustible gases, recalibration should be
performed, or if needed, the sensor replaced.
l Do not test the combustible sensor’s response with a butane cigarette lighter; doing so
will damage the sensor.
l Do not expose the detector to electrical shock or severe continuous mechanical shock.
l Do not immerse the detector in liquids.
l The pump (XT-RPUMP-K1) is certified for use with the BW MaxXT IIdetector only.
l Do not attempt to disassemble, adjust, or service the detector unless instructions for that
procedure are provided in the technical reference guide and/or that part is listed as a
replacement part. Use only Honeywell BW™ MaxXT II Replacement Parts and Accessories.
l The detector warranty will be voided if customer, personnel, or third parties damage the
detector during repair attempts. Non-Honeywell BW™ MaxXT II repair/service attempts
void this warranty.
l Warning: DO NOT to use any tool (i.e., metal needle nose pliers) to manipulate the battery
wires, insulation, or connector. There is a potential to short-circuit the battery wires that
could result in battery damage and injury to the user.
l Warning: The lithium battery (MX-BAT01) may present a risk of fire or chemical burn
hazard if misused. Do not disassemble, heat above 212°F (100°C), or incinerate. Do not
use any other lithium batteries with theBW MaxXT II detector. Use of any other cell can
cause fire and/or explosion. To order and replace the MX-BAT01 battery, refer to
BW MaxXT II 8 User Manual
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