M SLURRY USER
INSTRUCTION ENGLISH 71569241 - 02/08
Page 44 of 60
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bore.
c)
Install additional rings as required, staggering the
joints.
d)
Ensure that the shaft can be turned by hand.
e)
Install the remaining rings of packing, alternating the
joints.
It may not be possible to insert the last
ring in the box and still insert the gland. In this case,
omit the last ring of packing and install the gland.
Standard Packed Box Arrangement
(
2200
)
(2445)
(
4132)
)
(
9321)
)
(4120)
(2445)
(4100)
(1915.2)
The last ring of packing should be installed after the
pump has been in service and sufficient space is
available.
f)
Install the gland halves [4120], tighten the gland
nuts [6580] only finger tight.
N
ew packing has to be run-in and it
is good practice to start the pump with the stuffing
box gland quite loose. Packing that is too tight in the
box will cause undue friction, creating heat which will
glaze the packing and possible score the shaft
sleeves. To be effective, the packing must remain
soft and pliable. If stuffing box friction is so great that
the pump shaft cannot be turned by hand, the box is
not properly packed.
6.10.10.2 Mechanical seal
These details are specific to non cartridge
seals therefore they may not apply. Refer to any
special instructions supplied with the mechanical seal.
a) Before the mechanical seal can be installed, the
pump must be assembled with the correct impeller
running clearances (ie: all assembly steps above). A
scribe mark is then placed on the circumference of
the sleeve to mark the end of the box. This mark is
used to locate the seal position referenced by the
mechanical seal drawing provided.
b) After scribing the sleeve, remove the rotating
element from the casing. Do not adjust the bearing
housing.
c) Remove the impeller [2200] and stuffing box head
[4100]. Assemble the mechanical seal components,
including gland plates, gaskets and rotating parts
over the sleeve. Locate the seal relative to the
scribed markings on the shaft sleeve [2445] as
indicated by the seal manufacturers’ instruction.
d) Remove lubricating compound from the impeller nut
and shaft threads. Re-assemble components in
accordance with original assembly procedure with
the exception that Loctite 242 is applied to the
impeller nut [6580] threads. Torque the nut in
accordance with information below.
MINIMUM IMPELLER NUT
TIGHTENING TORQUE
FRAME
Ft. lbs.
Nm.
1
100
140
2
300
400
3
300
400
4
550
750
e) Assemble the mechanical seal gland plate and
gasket and fasten using gland studs [6572]. Secure
with nuts [6580] and tighten each by hand. Further
tighten the nuts in accordance with Table in 6.6.
Rotate the shaft to ensure that it turns freely without
rubbing or binding.
f) Re-assemble the rotating element into the casing.
Do not adjust the thrust bearing housing.
g) Set the deflector [2540] at the line bearing cover
[3260] so that they do not contact when the shaft is
rotated. Lock in place with the setscrews provided.
6.10.11 Final assembly
a) Lift the assembled pump onto the baseplate and
position the casing feet over the tapped holes in the
baseplate.
b) On frame sizes 1 to 4, loosen the bolts which attach
the rear support foot [3134] to the bearing frame
[3122]. Level the unit and align with the piping.
Tighten the bolts attaching the casing feet to the
baseplate in accordance with Table 6.6 using for
tightening torques. Do not distort casing or frame.
c) Install the pump coupling or sheave as required.
d) Refer to Section 4, Installation and Section 5,
