Flowserve MJ Slurry - Manual (Page 27)

MJ SLURRY USER INSTRUCTIONS ENGLISH 71569294 - 02/08
Page 27 of 42
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6.4 Recommended spares and consumables
For start up purposes:
1 - complete set of gland packing
2 - shaft sleeves
1 - set of gaskets and seals
(optional: 2 - mechanical seals)
For 2 years operation:
1 - set of bearings (line and thrust)
2 - sets of gland packing
2 - shaft sleeves
2 - sets of gaskets and seals
2 - lantern rings
2 - casing wear rings
(optional: 2 - mechanical seals
2 - impeller wear rings)
For 4 years operation:
1 - set of bearings (line and thrust)
2 - sets of gland packing
2 - shaft sleeves
2 - sets of gaskets and seals
2 - lantern rings
2 - casing wear rings
1 - impeller
(optional: 2 - mechanical seals
2 - impeller wear rings)
6.5 Tools required
A typical range of tools that will be required to
maintain these pumps is listed below.
Readily available in standard tool kits, and dependent
on pump size:
• Open ended spanners (wrenches) to suit up to
M 48 screws/nuts
• Socket spanners (wrenches), up to M 48 screws
• Allen keys, up to 10 mm (A/F)
• Range of screwdrivers
• Soft mallet
More specialized equipment:
• Bearing pullers
• Bearing induction heater
• Dial test indicator
• C-spanner (wrench) - for removing shaft nut.
(If difficulties in sourcing are encountered,
consult Flowserve.)
6.6 Fastener torques
Torque Nm (lb yft)
Bolt size
Pump feet
fasteners
All other
fasteners
M 16 (⅝ in.)
M 20 (¾ in.)
M 24 (⅞ in.)
M 27 (1 in.)
M 30 (1⅛ in.)
M 36 (1⅜ in.)
M 42 (1⅝ in.)
M 48 (1⅞ in.)
170 (125)
340 (250)
590 (435)
770 (570)
1 100 (810)
1 840 (1 350)
2 000 (1 475)
2 240 (1 650)
84 (62)
165 (120)
285 (210)
375 (275)
540 (400)
900 (660)
1 410 (1 040)
2 060 (1 500)
TIGHTENING TORQUE
FOR STAINLESS STEEL STUDS
WITH LUBRICATED THREADS
THREAD SIZE TIGHTENING TORQUE
Nm. Ft. lbs.
M10x1.5 (3/8–16UNC) 13 10
M12x1.75 (1/2–13UNC) 27 20
M16X2 (5/8-11UNC) 60 45
M20x2.5 (¾-10UNC) 100 75
6.7 Renewal clearances
As wear takes place between the impeller and casing
ring the overall efficiency of the pump set will
decrease. To maintain optimum efficiency it is
recommended that rings are replaced and the
impeller renovated when the radial clearance detailed
in section 3.4.2 has doubled to 0.6 to 0.8 mm (0.024
to 0.032 in.), depending on pump size. On FRBH it is
recommended that the product lubricated bearing be
renewed at a diametrical clearance of 0.5 mm
(0.04 in.).
6.8 Disassembly
Refer to section 1.6, Safety, before dismantling
the pump.
Before dismantling the pump for
overhaul, ensure genuine Flowserve replacement
parts are available.
To disassemble the pump consult the sectional
drawings, see section 8, Parts list and drawings.
6.8.1 Rotating
Element
The following procedure is recommended for removing
and disassembling the rotating assembly.
Note that the replacement gaskets and similar
consumable materials should be available since they
will be required for reassembly.
a) Isolate motor and lock off electrical supply in
accordance with local regulations.
b) Isolate suction and discharge valves.
c) Remove
guards