Thomas
XTSR71 Installation and
®
Maintenance Manual • Sizes 494-5258
Indicates a hazard which, if not avoided, will result in
serious injury or death.
Indicates a hazard which, if not avoided, could result
in serious injury or death.
GENERAL SAFETY INSTRUCTIONS
• Safety should be a primary concern in all aspects of coupling
installation, operation, and maintenance.
• Proper lockout/tagout procedures must be followed to safeguard
against unintentional starting of the equipment.
• Make sure to disengage the electrical power and any other sources
of potential energy before you perform work on the coupling.
• Do not make contact with the coupling when it is rotating and/or in
operation.
• Because of the possible danger to person(s) or property from
accidents which may result from improper use or installation of these
products, it is extremely important to follow the proper selection,
installation, maintenance and operational procedures.
• Installation should be carried out by skilled personnel only.
All personnel involved in the installation, service, operation,
maintenance, and repair of this coupling and the connected
equipment must read, understand, and comply with these
Installation and Maintenance instructions. The Installation and
Maintenance instructions and assembly drawing, if provided, must
be at hand at the installation site.
• Packaging material can generate electrostatic charges. It may then
become an explosive hazard. It must be removed from the coupling
outside any hazardous areas.
• All rotating power transmission products are potentially dangerous
and can cause serious injury. They must be properly guarded in
compliance with OSHA, ANSI, ATEX, European machine safety
standards and other local standards. It is the responsibility of the
user to provide proper guarding.
• For this coupling to meet the ATEX requirements, you must precisely
follow these installation and maintenance instructions, and the
supplement form 0005-08-49-01. This supplement outlines the ATEX
requirements. If the operator does not follow these instructions, the
coupling will immediately be considered non-conforming to ATEX.
Industrial Powertrain Solutions
Regal Rexnord
Application Engineering: 800 626 2093
PTSAppEng@regalrexnord.com
rexnord.com/couplings
Indicates a hazard which, if not avoided, could result
in minor or moderate personal injury.
Indicates information considered important, but not hazard-
related (e.g. messages relating to property damage).
• The coupling should be stored in a dry corrosion protected
environment, free from external loads (for example by stacking) to
prevent damage which may cause a hazard when the coupling is put
into service.
• For ATEX requirements the guard must have a minimum of 12.7 mm
(1/2 in) radial clearance to the coupling outside diameter and allow for
proper ventilation.
• All conductive parts of the equipment should be connected in such
a way that hazardous electrical potential differences cannot occur. In
case insulated metal parts could be charged thus becoming a potential
ignition source, earth connections must be provided.
• All work on the coupling must be performed when the coupling is at
rest with no load.
• Do not start or jog the motor, engine, or drive system without securing
the coupling components. If the equipment is started with only a hub
attached, the hub must be properly mounted and ready for operation,
with the key and set screw (if included) fastened. When the full
coupling assembly is started, all fasteners and hardware must be
completely and properly secured. Do not run the coupling with loose
fasteners.
• Use explosive environment appropriate tools only, for more information
see DIN EN 1127-1:2008:02, Annex A.
• The coupling may only be used in accordance with the technical data
provided in the Thomas disc coupling catalog. Customer modifications
and alterations to the coupling are not permissible.
• All spare parts for service or replacement must originate from or be
approved by Rexnord.
© 2013, 2023 Regal Rexnord Corporation, All Rights Reserved. MCIM23014E • Form# CP3-001E
F O R M
CP3-001E
Revised
June 2023
1
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