BW Technologies Max XT II Operator's Manual page 4

GasAlertMax XT II
Operator's Manual
• Calibrate only in a safe area that is free of hazardous gas in
an atmosphere of 20.9 % oxygen.
• 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.
• Only the combustible gas detection portion of this
instrument has been assessed for performance by CSA
International.
• Protect the combustible sensor from exposure to lead
compounds, silicones, and chlorinated hydrocarbons.
Although certain organic vapors (such as leaded gasoline
and halogenated hydrocarbons) may temporarily inhibit
sensor performance, in most cases the sensor will recover
after calibration.
• BW recommends that the combustible sensor be checked
with a known concentration of calibration gas after any
exposure to contaminants/poisons such as sulfur
compounds, silicon vapors, halogenated compounds, etc.
• BW recommends to bump test the sensors before each
day's use to confirm their ability to respond to gas by
exposing the detector to a gas concentration that exceeds
the alarm setpoints. Manually verify that the audible and
visual alarms are activated. Calibrate if the readings are not
within the specified limits.
• Caution: High off-scale LEL readings may indicate an
explosive concentration.
• Any rapid up scaling reading followed by a declining or
erratic reading may indicate a gas concentration beyond
upper scale limit, which can be hazardous.
2
• For use only in potentially explosive atmospheres where
oxygen concentrations do not exceed 20.9% (v/v).
• Extended exposure of the GasAlertMax XT II to certain
concentrations of combustible gases and air may stress the
detector element that can seriously affect its performance. If
an alarm occurs due to a high concentration of combustible
gases, recalibration should be performed, or if needed, the
sensor replaced.
• The BW pump (XT-RPUMP-K1) is certified for use with the
GasAlertMax XT II only.
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.
Warning:
• Do not use any other lithium batteries with the
GasAlertMax XT II detector. Use of any other cell can cause
fire and/or explosion. To order and replace the MX-BAT01
lithium battery, contact BW Technologies by
Warning:
• Lithium polymer cells exposed to heat at 266°F
(130°C) for 10 minutes can cause fire and/or explosion.
• Dispose of used lithium cells immediately. Do not
disassemble and do not dispose of in fire. Do not mix with
the solid waste stream. Spent batteries must be disposed
of by a qualified recycler or hazardous materials handler.
• Keep lithium cells away from children.
• Calibrations and bump tests can be performed using a
0.5 l/min. regulator or a demand flow regulator. If the demand
flow regulator is used, it must meet the following maximum
inlet pressure specifications:
• Disposable cylinders 0-3000 psig/70 bar
• Refillable cylinders 0-3000 psig/70 bar
Honeywell.