SnowPure Electropure EXL Series, Руководство по проектированию OEM

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SNOWPURE, LLC, 2005-2018 VERSION 3.5 (XL+EXL)
–FEBRUARY 2018
PAGE 65
Appendix #3: Resetting Bolt Torques-XL & XL-HTS Series Only
Torque is only critical for EDI XL & XL-HTS series; the EXL & EXL-HTS series do not
require torqueing. It is important for maintaining internal pressure to achieve water
quality, and for preventing internal and external leakage.
Do not torque the module while
it is in operation or while water pressure is being applied. The torque should be set at the
following times:
1) After it has been mounted to the skid
2) Before operation at the customers' site
3) After water pressure has been applied and has been released
4) Periodically (weekly) for the first month until all of the internal plastic parts
have fully compressed, and
5) Whenever the product quality declines a little.
Refer to the illustration below for resetting the torque of the bolts. Both final torque and
torque sequence/pattern is important. Following the torque pattern ensures that the
module is torqued evenly, and that local stresses are eliminated. There are 19 bolts.
Bolts require a 9/16-
inch (”) hex socket. Tighten the bolts in the numbered sequence,
with the center 8 bolts torqued first. Then tighten the upper and lower bolts following the
numbered sequence without causing the plates to deform or bend.
The distance “X”
should be the same from top to bottom (parallel plates).
Recommended Torque Settings:
Module Target Torque
XL (all) 20 ft-lbs (27 N-m)
XL-HTS (all) 10 ft-lbs (13 N-m)
EXL (all)
No Torque Required
EXL-HTS (all) No Torque Required
Figure 8: Torque Sequence
– XL & XL-HTS Only