Xylem LSB - Manual (Page 96)

Installation, Operation and Maintenance Instruction Model LSB
LSB 100-english page 92 Revision 02
Artikel Nr. 771076129 Ausgabe 01/2010
Installation Manual - Single mech. seal with quench without shaft sleeve
(Design code S4..2)
1. Safety Instructions
Every person, who is responsible for the
installation, removal, operation, start-up and
maintenance of the shaft seal, must also have
read and understood the Installation, Operation
and Maintenance Instruction of the particular
pump and especially chapter 8.1 "General
remarks" and chapter 8.2 "General", and follow
the instructions under any circumstances!
For pumps which are designed in conformity
with the Directive 94/9/EG (Atex95) for
environment endangered to explosion, the
additional Operating Instruction for explosion
protection of the mech. seal must be noticed.
The following descriptions are only valid commonly, as
far as they refer to the inner design of the mech. seal.
For possible particularities refer to the data sheet of
the mech. seal or instruction of the mech. seal-
manufacturer.
2. Description
This shaft seal is a single mech. seal with installation
dimensions acc. EN 12756 (DIN 24960) design "K",
form "U". API plan 62 / ISO plan 09. The resistance of
the materials in the mech. seal chamber (especially of
elastomeres) against the quench liquid has to be
noticed.
The quench chamber must be flown through by the
quench liquid without pressure. For connection refer to
the following sectional drawing.
The liquid of the quench must be selected in
such way that there can not occur any
dangerous reactions with the handled fluid. The
liquid of the quench can be contaminated due to
the handled fluid, therefore the operator must
care for an adequate disposal.
Because of the patented Cyclone Seal Chamber no
additional flushing of the seal chamber is necessary.
For description of materials and operational range of
the mech. seals supplied please refer to the data
sheet in the Operation Instruction resp. order
confirmation.
QI ... Quench suction (471Q)
Q0 ... Quench discharge (471Q)