Flowserve PolyChem GRP - Manual (Page 28)

USER INSTRUCTIONS POLYCHEM GRP ENGLISH 71569132 12-04A
Page 28 of 52
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Figure 5-15
Flowserve coupling guards are safety devices intended
to protect workers from inherent dangers of the rotating
pump shaft, motor shaft and coupling. It is intended to
prevent entry of hands, fingers or other body parts into a
point of hazard by reaching through, over, under or
around the guard. No standard coupling guard provides
complete protection from a disintegrating coupling.
Flowserve cannot guarantee their guards will
completely contain an exploding coupling.
The coupling guard shown in figure 5-15 conforms to
the USA standard ASME B15.1,
“Safety Standard for
Mechanical Power Transmission Apparatus.”
Flowserve manufacturing facilities worldwide conform
to local coupling guard regulations.
5.5.2
ClearGuard™ - option
Flowserve of fers as an option a ClearGuard™ which
allows you to see the condition of the coupling. (See
figure 5-16.) This guard can be used in place of the
existing clamshell guard described above. The
following instructions enable the user to properly fit
this guard to the pump and motor.
Figure 5-
16: ClearGuard™
5.5.2.1 Trimming and assembly instructions
In order to correctly fit the pump/motor configuration,
each ClearGuard must be trimmed to a specific
length. This trimming is done on the motor end of the
guard as described below. (See figure 5-17.)
Figure 5- 17: ClearGuard™ trimming
5.5.2.1a Trimming
a) Measure minimum distance from the center of
mounting hole in the baseplate to the motor at
diameter as shown above.
b) Locate a reference center of the slot in the coupling
guard flange. Transfer measurement from step 1 to
the guard using this reference center.
c) Trim the motor end of guard according to the above
measurement. Trimming is best done with a band
saw, but most other types of manual or power saws
give acceptable results. Care must be taken to
ensure that there is no gap larger than 6 mm (0.24
in.) between the motor and the coupling guard.
d) Note - if motor diameter is smaller than the guard
diameter, trim guard so that it extends over the
end of the motor as far as possible.
e) Deburr the trimmed end with a file or a sharp knife.
Care must be taken to eliminate all sharp edges.
5.5.2.1b Assembly
a) Place the bottom and top halves of the
ClearGuard around the coupling.
b) Install the support legs by inserting and then
rotating the top flange of the leg through the slot
in the shell flange until it comes all the way
through and locks the top and bottom together.
c) Attach the support legs to the baseplate using the
fasteners and washers provided.
d) Install fasteners in the holes provided to secure
the guard flanges together.
5.6 Priming and auxiliary supplies
The PolyChem GRP pump will not move liquid unless
the pump is primed. A pump is said to be “primed”
when the casing and the suction piping are
completely filled with liquid.
Open discharge valves a slight amount. This will allow
any entrapped air to escape and will normally allow the
pump to prime if the suction source is above the pump.