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Operating Instructions
10/2010
1096.0799 | VU / VH Series
27
2.
Discharge casing and inter casing
Clamp in the bearing housing (330) and the pump
shaft (211) with the drive side pointing up.
Adjust the inter casing (137.3) to the discharge casing
(107) (marks), force it into position and compress it.
Push both parts (107/137.3) onto the pump shaft, ad-
just and put them down on the shaft sealing casing
(441).
3.
Installation of inter casings, stage casings and impellers
Fix the fitting key (940.1) in the pump shaft.
VU 20/40
Push the impeller (230) onto the pump shaft.
The impeller blades must be tilted in the direction of rota-
tion.
Force the stage casing (110) into the inter casing
(137.3).
VH 20/40/60
Push the impeller (230.1) onto the pump shaft.
The impeller blades must be tilted in the direction of rota-
tion.
Force the stage casing (110.1) into the inter cas-
ing (137.3).
Insert the packing gland (461) and the ring (500)
into the inter casing (137.2).
Insert the packing gland (461) into the inter casing
(137.1).
Adjust the inter casing (137.1) to the inter casing
(137.2) (marks), force it into position and com-
press it.
Push both inter casings (137.1/137.2) onto the
pump shaft, adjust them to the discharge casing
(marks) and put them down on the stage casing
(110.1).
Fix the fitting key (940.1) in the pump shaft.
Push the impeller (230) onto the pump shaft.
The impeller blades must be tilted in the direction of rota-
tion.
Force the stage casing (110) into the inter casing
(137.1) (with VH60: adjust mark).
4.
Suction casing and inter casing
Adjust the inter casing (137) to the suction casing
(106) (marks), force it into position and compress it.
Push both parts (106/137) onto the pump shaft (211),
adjust and put them down on the stage casing (110).
5.
Installation of mechanical seal and shaft sealing casing
Push the ring (500.2) onto the pump shaft (211).
Moisten the auxiliary seal of the rotating unit (047.1)
with lubricant (grease containing PTFE).
Push the rotating unit (047) onto the pump shaft (211)
by a screwing movement in the sense of winding of the
spring.
Adjust the shaft sealing casing (441) to the suction
casing (106), force it into position it and put it down.
6.
Installation of bearing housing and floating bearing
Force the bearing housing (330) into the shaft sealing
casing (441), adjust it and put it down.
Insert the casing bolts (563) and slightly fasten them
with hexagon nuts (920).
Press-fit the rolling bearing (320) into the bearing
housing (330).
Force the bearing cover (360) into the bearing housing
(330) and adjust, fasten by means of hexagon head
screws (901.1).
Insert the fitting key (940) into the pump shaft (211).
Horizontally position the pump on a level surface and
adjust it using the pump feet.
Tighten the casing bolts (563) and hexagon nuts (920)
crosswise.
Verify unobstructed movement of the pump. Manually
rotate the pump shaft.
Additional steps for VH 60
Put down seals (400/400.1) and connecting pipe
(700) on the suction/discharge casing, fasten it
with hexagon head screws (901) and hexagon
nuts (920).
7.5.11 Assembly of VU 80/140/220,
VH 110/140/180
Cross-sectional drawing VU 80 – 220
Cross-sectional drawing, page 57
Cross-sectional drawing VH 110 – 180
Cross-sectional drawing, page 60
1.
Installation of inter casings on suction/discharge casing
Adjust the inter casing (137) (marks) and force it into
the suction casing (106).
Adjust the inter casing (137.3) (marks) and force it into
the discharge casing (107).
Screw hexagon socket head screws (914) through the
suction/discharge casing into the inter casings
(137/137.3) and fasten them.
Additional steps for VH 110/140/180
Insert the packing gland (461) into the inter casing
(137.1)
Adjust the inter casings (137.1/137.2) (mark),
force them into position and compress them.
2.
Installation of impeller and pump shaft
Push the lock washer (931) onto the non-drive side of
the pump shaft.
Screw the impeller nut (922) onto the pump shaft
(211).
Insert the fitting key (940.1) into the pump shaft.
Vertically clamp the pump shaft (211) with the drive
side pointing up.
VU 80/140/220
Push the impeller (230) onto the pump shaft
(211).
The impeller blades must be tilted in the direction of rota-
tion.
VH 110/140/180
Push the impeller (230.1) onto the pump shaft
(211).
The impeller blades must be tilted in the direction of rota-
tion.
Push the shaft sleeve (523) onto the pump shaft
(211).
Push the inter casings (137.1/137.2) jointly over
the shaft sleeve (523) .
Insert the fitting key (940.1) into the pump shaft.
Push the impeller (230) onto the pump shaft.
The impeller blades must be tilted in the direction of rota-
tion.
Slide the lock washer (931) onto the pump shaft.
Screw the impeller nut (922) onto the pump shaft
(211).
Set the impellers in accordance with adjustment di-
mension L by turning the impeller nuts.
Following the setting procedure, secure the impeller
nuts (922) using lock washers (931).