Smiths John Crane 93LR Series Installation, Operation & Maintenance Instructions Manual

1. Foreword
This manual relates to matters affecting the operation of the T93LR
separation seal within compressor machinery. It covers areas directly
associated with the installation, removal, operation and maintenance of the
separation seal. For other related subjects, such as the correct operation
of associated systems or guidance when conducting hazard analysis (as
may be required under the European ATEX Directives), consult with the
compressor equipment supplier and their documentation.
The T93LR separation seals are robust in operation. However, any
incorrect handling, assembly or fitting can easily lead to seal damage.
Therefore, John Crane T93LR separation seals may only be installed,
commissioned and maintained by a fully trained and authorized plant
machinery specialist. This person must pay close attention to these
instructions, the John Crane seal installation drawing, compressor
equipment supplier's manuals and documentation and all relevant
regulations. Failure to do this relieves the manufacturer John Crane from
any liability or warranties. It is strongly recommended that the seals are
fitted by John Crane trained and approved technicians.
If there are any seal problems that need an urgent response, please
contact your local John Crane sales representative.
2. Safety
The safety notes refer to the arrangement supplied. They can never be
exclusive, and must be used in conjunction with the relevant safety
regulations for the machine, auxiliary equipment, plant and sealed fluid.
2.1 Warning symbols
The following symbols are used in this instruction manual to highlight
information of particular importance
Danger
Mandatory instructions designed to prevent personal
injury or extensive damage.
ATTENTION Special instructions or information to avoid damage to
the system or its surroundings.
NOTE
Information for easy installation and efficient operation.
Please comply with any additional warning signs on the system.
2.2 Safety instructions
Prior to any installation, removal, operation and
maintenance of the T93LR separation seal, all personnel
involved in these activities must have read and
understood this document before the commencement
of any work. If there is not adequate understanding,
contact John Crane for further advice.
All personnel involved in the installation, operation and
maintenance of the separation seal must have adequate
training and understanding with regards to:
• The separation seals being used.
• The equipment being worked on, including any
relevant auxiliary equipment and systems.
TYPE 93LR
SEPARATION SEAL
Installation, Operation & Maintenance Instructions
• All tooling and equipment associated with fitting and
removing seals.
• The environment in which work is being carried out.
• Health, safety and environmental issues associated
with the above points including all relevant local
site, national and international health, safety and
environmental procedures and regulations.
Any working practice that compromises safety must be
avoided.
All personnel involved in the installation, removal,
operation and maintenance of the separation seals must
be authorized by the responsible party to work on the
equipment that the seals are fitted to.
At all times, adequate personal protection equipment
should be worn/used. This equipment needs to be
suitable for the environment and surroundings that a
person is working within.
At all stages in work relating to the separation seal,
reference must be made to the John Crane installation
drawing, this document and the compressor equipment
supplier's manuals and documentation and all relevant
regulations.
Separation seal cartridge disassembly is not required
for normal operation and maintenance and must never
be undertaken other than by a John Crane trained
technician approved for the seal type being worked
on. Where seals require inspection and refurbishment,
please contact John Crane.
Modifications and/or alterations of the separation seal
in any way are not permitted without the authority of
John Crane. Failure to obtain this authority relieves
the manufacturer John Crane from any liabilities or
warranties.
In the event of an operating problem, the machinery
must be immediately switched off and made safe.
Problems must be solved promptly.
A small controlled gas flow (commonly called the seal
leakage) will occur within the separation seal during
normal seal operation. In cases of a worn or defective
seals, the leakage volumes will increase. This leakage
may be hazardous, toxic and or explosive.
Attention is also drawn to the fact that, on its own,
separation seal leakage may not be dangerous.
However, if it was to combine with other gases, liquids
and/or substances with increased or decreased
pressure and temperature or be subjected to heat and/
or an ignition source, then the mixture may become
hazardous, toxic and/or explosive.
All leakage will need to be collected and directed
to a safe location by the equipment and systems
that the separation seals are fitted/connected to.
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