Reassembling The Pump - Wilo -SCP Einbau- Und Betriebsanleitung

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9.5 Reassembling the pump

9.5.1 Reassembly of rotating element (Gland pack
version pump)
• Place the impeller key(6) at its seat on the shaft(4)
• Now slide the impeller(3) at its position on the
shaft(4), matching the marked position done
while disassembly
• Place the neck ring(5) on the impeller eye
• Slide the sleeve(7) on both side of the impeller
over the shaft
• Insert the O-ring(8) in between the shaft(4) and
sleeve(7)
• Now place the spacer sleeve(9);ensuring proper
positioning of the O-ring(8)
• Screw the sleeve nut(10);but don't tight it now,
keep it loose
• Now slide in the stuffing box bush(11) over the
shaft on both sides
• Place the logging ring (13) next to the stuffing box
bush(11)
• Side in the gland (14), followed by water thrower
(32) n both side
• Now slide the bearing inner cover(16 & 20) on eit-
her side of the shaft(4)
• Now place the thrust collar (19) followed by thrust
end bearing (22). To place the bearing at its posi-
tion using proper mounting aid
• Now place the lock washer (23) and lock nut(24).
• Tight the lock nut completely with proper tigh-
tening tool and lock it with the lock washer (23).
For tightening sequence refer figure 10
• Now place the bearing(17) at the driving end using
proper mounting aid
• Press the bearing housing(18 & 25) over the bea-
rings(17 & 22) using a mallet
Table for Gland Packing Details For SCP pumps
Pump
SCP 50-220 HA
SCP 50-180 HA
SCP 50-340 HA
SCP 50-340 DS
SCP 65-390 HS
SCP 80-230 HA
SCP 80-200 HA
SCP 80-380 DS
SCP 80-340 HA
70
Gland Packing ring
packing quantity
size
2
mm
12 2
14 3
10 5
9 5
14 3
14 3
14 3
10 5
14 3
9.5.2 Re-assembly of the pump (Gland pack version
pump)
• Ensure that casing is clean, dry and free from
foreign matter. Clean casing neck ring and stuf-
fing box bush seating thoroughly and ensure
they have no burrs.
• Now lift the rotor assembly and place it on the
bottom half casing (2)
• Put a gasket(31) from 0.25 mm thick black joint
paper or similar gasket material and locate on
split flange of bottom half casing.
• Make sure the neck ring pin(38) provided to the
neck ring (5) and stuffing box bush(11) sits pro-
perly in their respective sit
• Now screw the bearing end cover(16 & 20) to
the bearing housing (18 & 25) and bearing
housing to the bottom casing(2)
• Pull the water thrower(32), gland(14) and log-
ging ring(13) towards the bearings(17 & 22) on
both side
• Now check the position of impeller; if adjust-
ment is required, do it by loosing / tightening the
sleeve nut(10) on either side of the impeller
• After proper positioning of the impeller, tight
the sleeve nut(10)
• Place all the studs for split flange(29) at their
respective positions
• Now place the top half casing(1)
• Insert the steady pins(33) of casing(1 & 2) and
bearing housing(18 & 25) at respective their
position
• Tighten the bolts with a torsion bar with the
proper sequence
• Check for the proper position of neck ring(5) and
stuffing box bush(11)
• Now stuff in the stuffing box with the number of
gland pack rings. For proper cutting procedure
of packing rings refer figure 9.
• Press in the logging ring and stuff in remaining
gland pack rings
• Now place the gland at its position and hand
tight its studs(15)
• Check for free rotation of the shaft
Pump
SCP 200-390 HA 20
SCP 200-440 HA 20
SCP 200-460 HA 20
SCP 200-550 HA 20
SCP 200-480 HA 20
SCP 200-560 HA 22
SCP 200-660 DV 22
SCP 250-250 HA 16
SCP 250-390 HA 20
Gland Packing ring
packing quantity
size
2
mm
3
3
3
3
3
3
3
3
3
WILO SE 10/2019