Before Starting the Equipment
1.
Check the pump at the coupling for proper alignment of the driver
or motor.
2.
Ensure that the gland plate nuts/bolts are securely tightened according
to the pump manual instructions, and that all screws are securely
fastened.
3.
Complete the assembly of the pump, and turn the shaft (by hand if
possible) to ensure free rotation.
4.
Consult all available equipment operating instructions to check for
correctness of all piping and connections, particularly regarding seal
recirculation/flush, heating or cooling requirements, and services
external to the seal.
This mechanical seal is designed to operate in a liquid
so the heat energy it creates is adequately removed.
Therefore, the following check should be carried out
not only after seal installation, but also after any period
of equipment inactivity.
5.
Check that the seal chamber fluid lines are open and free of any
obstruction, and ensure that the seal chamber is properly vented and
filled with liquid - refer to the pump instruction manual.
Dry-running - often indicated by a squealing noise from
the seal area - will cause overheating and scoring or
other damage to the sealing surfaces, resulting in
excessive leakage or a much shortened seal life.
Before start-up, ensure that all personnel and
assembly equipment have been moved to a safe
distance so there is no contact with rotating parts
on the pump, seal, coupling, or motor.
WARNING:
Seal installation should be handled only by
qualified personnel. If questions arise, contact the
local John Crane Sales/Service Engineer. Improper
use and/or installation of this product could result
in injury to the person and/or harmful emissions to
the environment, and may affect any warranty on
the product. Please contact the company for
information as to exclusive product warranty and
limitations of liability.
Safety Instructions
1.
The following designations are used in the installation instructions to
highlight instructions of particular importance.
NOTE:
Refers to special information on how to install or
operate the seal most efficiently.
Refers to special information or instructions directed
towards the prevention of damage to the seal or its
surroundings.
Refers to mandatory instructions designed to prevent
personal injury or extensive damage to the seal or its
surroundings.
2.
Installation, removal and maintenance of the seal must be carried out
only by qualified personnel who have read and understood these
installation instructions.
3.
The seal is designed exclusively for sealing rotating shafts. The
manufacturer cannot be held liable for use of the seal for purposes
other than this.
4.
The seal must only be used in technically perfect condition, and must
be operated within the recommended performance limits in
accordance with its designated use set out in these installation
instructions.
5.
If the pumped fluid is hazardous or toxic, appropriate precautions
must be taken to ensure that any seal leakage is adequately
contained. Further information on sealing hazardous or toxic fluids
should be obtained from John Crane prior to seal installation.
6.
Fluorocarbon components should never be burned or incinerated as
the fumes and residues are highly toxic. If fluorocarbons are
accidentally heated above 750˚F/400˚C, they can decompose.
Therefore, protective gloves should be worn as hydrofluoric acid may
be present.
7.
PTFE components should never be burned or incinerated as the
fumes are highly toxic.
Foreword
These instructions are provided to familiarize the user with the seal and its
designated use. The instructions must be read and applied whenever work is
done on the seal, and must be kept available for future reference.
These instructions are for the installation and operation of a
seal as used in rotating equipment and will help to avoid
danger and increase reliability. The information required may
change with other types of equipment or installation
arrangements. These instructions must be read in conjunction
with the instruction manuals for both the pump and any
ancillary equipment.
If the seal is to be used for an application other than that originally intended or
outside the recommended performance limits, John Crane must be contacted
before its installation and use.
Any warranty may be affected by improper handling, installation, or use of this
seal. Contact the Company for information as to exclusive product warranty
and limitations of liability.
If questions or problems arise, contact your local John Crane Sales/Service
Engineer or the original equipment manufacturer, as appropriate.
John Crane mechanical seals are precision products and must
be handled appropriately. Take particular care to avoid damage
to lapped sealing faces and to flexible sealing rings. Do not
excessively compress the seal before or during installation.
John Crane
Type 5611 and 5611Q
Elastomer Bellows
Cartridge Seal
Assembly and
Installation Instructions
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5611/5611Q
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5611/5611Q
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