Meritor ThermALERT A MTIS by PSI Technology

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Meritor ThermALERT a MTIS by P.S.I.
Technology June 2006
meritorhvs.com
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Meritor Tire Inflation System by P.S.I.
Air is supplied from the trailer air tank to the
control box, which regulates the air pressure to
a preset value. The regulated air then flows
through the tapped axle into the hoses on the
wheel end, which keeps the tires properly
inflated at all times.
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Components of MTIS
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ThermALERT Features Benefits

• ThermALERT is a value added option when you
  purchase MTIS the proven leader with nearly two
  million tires protected.
• New patented ThermALERT technology leverages
  MTIS system.
• Helps alert drivers to stop for repairs before
  serious damage occurs due to elevated wheel-end
  temperatures.
• Helps reduce downtime, risk and operating cost.

ThermALERT Press Plug
ThermALERTTM helps alert drivers to stop for
repairs before serious damage occurs due to
elevated wheel-end temperatures
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Why ThermALERT ?
Market research suggests over half the fleets
surveyed have experienced problems with wheel end
heat build up.
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Why ThermALERT ?
The cost of wheel end heat build up can be
substantial.
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How ThermALERT Works

• If the temperature of the wheel-end exceeds the
  melting point of the eutectic material the
  thermal screw will melt causing pressurized air
  to vent through the hub cap tee vent. The
  indicator light will come ON, there will be an
  audible sound at the wheel-end as air vents
  through the hub cap tee vent.
• Inspect and repair components that caused the
  wheel-end to exceed normal operating temperatures
  before the trailer is put back into service to
  prevent serious personal injury and damage to the
  trailer components.
• Please note that the ThermALERT system does not
  alleviate the need to perform recommended
  wheel-end maintenance procedures.
• ArvinMeritor Technical Publication TP-9914 for
  complete system overview and Maintenance Manual
  14P for service and installation procedures.

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ThermALERT System Requirements

• For the ThermALERT to operate as it was designed
  the system must use
• New control box with gray color flow switch
• 6 vent hub caps
• Thermal press plugs (includes thermal screw)
• New LED light and warning decal provide operating
  guidelines to the driver.

New control box (31082-00) with gray colored flow
switch
New ThermALERT decal and LED trailer light
included in kit H2712-XX.
Example press plug with thermal screw
Example 6 vent hubcap
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6 Vent Hub Caps

• All MTIS systems now use 6 vent hub caps.
• Changed from 3 vent to 6 vent for additional
  venting capacity in the event the eutectic
  material melts
• Oil and grease style hub caps come equipped with
  vent holes extensions.

Six Vents
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ThermALERT Press Plugs

• The press plug must be installed so that the
  thermal screw is located at the 12 oclock when
  the axle is sitting in the running position.
• The ThermALERT system cannot be installed onto a
  solid axle spindle
• Eutectic alloy melts when wheel end operating
  temperature reach an abnormal temperature.
• Thermal screw replacement procedure specified in
  Maintenance Manual 14P.

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New Control Box
Gray Color Flow Switch

• All MTIS systems now use the new style control
  box with gray color flow switch.
• Flow switch orifice size reduced
• The earlier version had a black color housing
• New control box part number 31082

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Warning Decals lights

• Standard MTIS light and decal is replaced by new
  ThermALERT decal and light
• Trailer manufacturers must use the light supplied
  in the MTIS ThermALERT kit.

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ThermALERTTM Warning Decal
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ThermALERTTM Warning Light

• If the indicator light comes ON during operation,
  the driver should immediately find a safe place
  to pull over, stop and assess the problem.
• The warning light illumination can be caused by
  one or more of the following reasons
• Damaged inflation system components
• System unable to keep up with a leaking tire
• Wheel-end temperature is high enough to activate
  the ThermALERT warning system

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ThermALERTTM Hub Cap Decal

• Install the ThermALERT decal to each hub cap.

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Limited Production Release

• Guidelines for limited release
• For approximately 6 months, ThermALERT sales
  will be limited to prepped axles - TN, TQ, and TP
  spindle profiles. (Not offered on the TL at this
  time).
• A prepped axle implies beam, brakes, plugs, and
  stators factory assembled by ArvinMeritor
• In the initial phase of introduction a minimum
  order quantity for 10 trailers will be required.
• OEMs will be required to identify the fleet so an
  ArvinMeritor DSM can contact them to review
  ThermALERT operating guidelines.
• Available on 16.5 Q and Q brakes
• Not offered on 12.25 brakes at this time.
• Not offered with cast spoke wheels at this time.
• Full kits for retrofits are not available until
  full production release.

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ThermALERTTM Product Information Letter
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Supplemental Information

• System Overview Technical Publication TP-9914
• Service Installation Procedures Maintenance
  Manual 14P
• Parts Book (PB 9999)

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