Flowserve Mark 3 Sealed Metallic Durco User Manual
Page 40
MARK 3 USER INSTRUCTIONS ENGLISH 71569102 01-13
Page 40 of 72
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5.5.1
Clam shell guard - standard
The standard coupling guard for all Mark 3 pumps is
the “clam shell” design and is shown in figure 5.15. It
is hinged at the top and it can be removed by
loosening one of the foot bolts and sliding the support
leg out from under the cap screw. Note that the foot
is slotted. The leg can then be rotated upward and
half of the guard can be disengaged (unhinged) from
the other. Only one side of the guard needs to be
removed. To reassemble simply reverse the above
procedure.
Figure 5.15
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™ - optional
Flowserve offers 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.
Disassembly of the ClearGuard™ is accomplished by
removing the fasteners that hold the two guard
halves together followed by removing the foot bolts
and rotating the support leg out of the slot on the
guard.
Figure 5.16
5.5.3
Trimming instructions
In order to correctly fit the pump/motor configuration,
each guard must be trimmed to a specific length.
This trimming is done on the motor end of the guard.
a)
Measure minimum distance from the center of
mounting hole in the baseplate to the motor.
If clam shell guard proceed to step c
b)
Locate a reference center in the slot of the
ClearGuard™ coupling guard flange, see figure
5.17. Transfer the length measurement to the
guard using this reference center.
c)
Trim the motor end of the 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)
If motor diameter is smaller than 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 if ClearGuard™. Care must be taken to
eliminate all sharp edges.
Figure 5.17
5.5.4
Assembly instructions
Clam shell guard
a)
Mount support leg to each clam shell, figure
5.15.
b)
Attach one half of the guard to the baseplate.
c)
Engage the tabs of guard halves together.
d)
Attach the second support leg to the baseplate.
ClearGuard™
a)
Place the bottom and top halves of the guard
around the coupling.
b)
Install the support legs by inserting and then
rotating the tab on the leg through the slot in the
guard until it comes through and locks the top
and bottom halves of the guard 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.
REFERENCE
CENTER
TRIM THIS END
MEASUREMENT STEP a)