Flowserve Machinery Components - Manual (Page 3)

General Installation and Maintenance Instructions for Machinery Components
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ESA position statement: http://www.europeansealing.com/statements.html
For applications which require information on expected surface temperatures of
the mechanical seal faces, Flowserve document “ATEX 137 information declaration”
is available upon request. This document allows users to determine typical surface
temperatures based upon seal design, operating conditions and face materials and
may be used by the users to comply with ATEX 1999/92/EC (ATEX 137).
1.4 Functional requirements
The proper functioning of a mechanical seal is only achieved once the following
conditions have been met:
• The sealing surfaces are lapped within specification.
• Perpendicularity and concentricity between the shaft and the seal chamber face
and bore respectively
• Freedom of movement of the spring loaded components in axial direction
• Axial and radial shaft movements within Flowserve or OEM tolerances whichever
is the tightest.
• The seal is used under the conditions for which it was selected.
• The equipment in which the seal(s) is (are) installed is operated within normal
parameters (no cavitation, excess vibration etc.)
• Prevention of sedimentation on shaft or sleeve surfaces caused by for instance
crystallisation or polymerisation
• Permanent liquid or gas film between the sealing surfaces, depending on seal type.
Failure to meet these requirements will result in excessive leakage and / or shortened seal life
and may result in high component and surface temperatures (see the directive 94/9/EC,
1999/92/EC and EN 13463-5).
2. Safety
DANGER:
This means that personal danger or major material damage can occur when no attention
is paid to this.
ATTENTION:
This means that important information is pointed out that may also be overlooked by skilled
personnel. The information can be important to avoid personal injury or material damage.
Please read these instructions carefully. Installation in accordance with the following instruc-
tions will contribute to long and trouble free running of the mechanical seal. For related mecha-
nical seal auxiliary equipment (reservoirs, coolers, etc.), separate instructions will be provided.
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