
ClearCommand
Communications System
OPERATING AND MAINTENANCE INSTRUCTIONS
Voice Amplifier/Radio Interface
mplifier P/N 10023056
A
mplifier Kit P/N 10024074
A
Amplifier RI P/N 10051289
mplifier RI Kit P/N 10051290
A
®
See Page 8 for Part Numbers
Read this manual carefully if you have, or will have, the responsibility for using or servicing the product. The
ClearCommand Communication System from MSA will perform as designed only if used and serviced according to the instructions. Otherwise, the product could fail to perform as designed and persons who rely on
this product could sustain serious personal injury or death.
The warranties made by MSA with respect to the product are voided if the product is not installed, used,
and serviced in accordance with the instructions in this manual. Please protect yourself and your employees
by following the instructions. Please read and observe the WARNINGS and CAUTIONS inside. For any additional information relative to use or repair, write or call 1-800-MSA-2222 during regular working hours.
This product is NIOSH certified as an accessory for the Ultra Elite® Facepiece for use with all MSA MMR
breathing apparatus. Only the Amplifier and Amplifier Radio Interface are approved by NIOSH for use in a
CBRN application when used in an approved configuration.
TAL 7001 (L) Rev. 4 © MSA 2007 Prnt. Spec. 10000005389(A) Mat. 10053366
Doc. 10000018636

TABLE OF CONTENTS
INTRODUCTION
Cautions and Limitations....................................................2
pecial User’s Instructions .................................................2
S
Description .........................................................................2
Intrinsically-Safe Rating......................................................3
Preparing For Use ..............................................................4
Cleaning and Maintenance.................................................6
NIOSH APPROVAL INFORMATION
CAUTIONS AND LIMITATIONS
I - Contains electrical parts which have not been evaluat-
ed as an ignition source in flammable or explosive
atmospheres by MSHA/NIOSH.
N - Never substitute, modify, add, or omit parts. Use only
exact replacement parts in the configuration as specified by the manufacturer.
S - Special or critical User’s Instructions and/or specific
use limitations apply. Refer to User’s Instructions
before donning.
SPECIAL OR CRITICAL USER’S INSTRUCTIONS
1. Do not alter this unit. You will void the intrinsic-safety
rating, and may affect the intrinsic-safety of the
device.
2. Evaluate this unit, and any radio transceiver with
which it may be used, before entering a hazardous
atmosphere. Be certain that this unit is not affected
adversely by radio frequency energy.
3. Evaluate this unit, and any radio transceiver with
which it may be used, as a source of radio frequency
interference to other apparatus before entering a hazardous atmosphere.
4. Misuse or abuse of the ClearCommand
Communications System, or the equipment to which it
is attached, or using this equipment in a manner or
situation not intended by the manufacturers, may
result in damage to the ClearCommand, or equipment
connected to the ClearCommand Communications
System, or may result in personal injury or death to
the user or persons dependent on the user.
5. Always inspect the ClearCommand Communications
System for damage before use. If damage is found,
tag the cable and immediately remove the device from
service. NEVER USE A DAMAGED OR NON-FUNCTIONAL COMMUNICATION SYSTEM!
DESCRIPTION
The ClearCommand Communications System Amplifier
Radio Interface (RI) Version allows a user to communicate
clearly and easily, both face-to-face and over a hand-held
radio, while wearing an SCBA equipped with an Ultra
Elite Facepiece.
Inspection ...........................................................................6
torage ...............................................................................6
S
Installing the Batteries ........................................................6
Replacement Parts and User’s Instructions.......................8
Drawing ..............................................................................8
The system consists of three main components that
attach to the user’s radio:
• An internal microphone assembly
• An Amplifier or Amplifier RI hooked to the facepiece
with a mounting bracket. The Amplifier RI (Radio
Interface) includes an ear speaker and a cable to connect to a lapel microphone or Push-To-Talk.
• A Lapel Microphone or optional Basic Push-To-Talk
(PTT) with specific radio interface connection. The
amplifier can be attached or removed from the facepiece in seconds without tools.
Note: To complete the system, the user must select and
purchase the proper Lapel Microphone or Basic Push-ToTalk (PTT) Unit that fits their specific radio. (see Table in
Parts List)
When the Amplifier RI Assembly is connected to the Lapel
Microphone, communication is the same as with the
Basic PTT interface.
The Lapel Microphone Unit can be used without the
Amplifier RI. The Lapel Microphone interface contains a
remote speaker and microphone with a Push-To-Talk
Button. This unit allows remote, shoulder mounted, radio
transmission and reception.
When the Amplifier RI Microphone is connected to the
Basic PTT, the user presses the button to transmit and
incoming radio messages are heard at the Amplifier RI ear
speaker.
The Lapel Microphone is equipped with the following:
• Female connection for the male connector of the helmet microphone assembly.
• Belt clip on the back of the Lapel Microphone for
attaching the Lapel Microphone to the user’s clothing.
(An optional, clothespin type clip assembly is also
available as an accessory)
• Microphone, speaker, and a Push-To-Talk Button.
• The Push-To-Talk Button is protected against inadvertent operation by a guard. The unit is shipped with the
taller guard. When the taller guard is removed, the
Push-To-Talk Button becomes fully exposed and easier to access. The shorter guard is included and available for replacement.
• Cable and radio-specific connector.
• Connection port for an optional remote finger PushTo-Talk Button used when wearing a Level A Suit.
TAL 7001 (L) Rev 4 - 10053366
2

INTRODUCTION
The amplifier operates from two standard AAA alkaline
atteries and notifies the user when the batteries need
b
replaced. Each Amplifier and Amplifier RI has a low bat-
ery LED indicator.
t
Intrinsically-Safe Rating
The ClearCommand Communications System is certified
ntrinsically-Safe in the United States for use in Class 1,
I
Division 1, Groups A, B, C, D, E, F, and G hazardous locations.
The ClearCommand Communications System is certified
intrinsically-safe in Canada CAN CSA-C22-2-No.157-92.
Failure to follow this warning can result in serious personal injury or death.
Note: The intrinsically-safe level of any system which
uses the ClearCommand Communications System is that
of the lowest intrinsically-safe rating of any single component in the system.
Risk of Explosion - Use only Helmet Communication
Systems with the proper intrinsically safe rating in
hazardous environments. Misuse can result in serious
personal injury or death.
A copy of the Control Drawing may be obtained by down-
oading it from MSA’s website,
l
www.msanet.com/catalog/product852.html or by contact-
ng MSA’s Customer Service Department directly:
i
Phone: 1-800-MSA-2222
Fax: 1-800-967-0398
Email: info@msanet.com
Mail: Attn: Customer Service
ine Safety Appliances Company
M
PO Box 426
Pittsburgh, PA 15230
Ensure each component of the intrinsically safe system is
suitable for the Hazardous (Classified) Location prior to
entering.
Substitution of components may eliminate or compromise intrinsic safety.
Ensure the radio used is intrinsically safe before entering a hazardous atmosphere. Failure to following this
warning can result in serious personal injury or death.
The ClearCommand Communications System must be
tested before entering a hazardous atmosphere. If the
ClearCommand Communications System fails to operate as designed, disconnect at the radio and use the
radio independently from the communication system.
3
TAL 7001 (L) Rev 4 - 10053366