KSB BOA-H User manual

Caution
0570.812/04-EN
Assembly instructions
Limit switch set
BOA-H DN 15-150 PN 16/25
Material variant EN-GJS-400-18-LT
Fig. 1 Exploded view of limit switch set 2..................................................
Fig. 2 Parts list for limit switch set 2.......................................................
Fig. 3 Dismantling 3......................................................................
Fig. 4 Fitting the threaded bush 3..........................................................
Fig. 5 Fitting the switching nut and fixing plate 4...........................................
Fig. 6 Fitting the mounting bracket 4.......................................................
Fig. 7 Fitting the contact piece 5...........................................................
Fig. 8 Fitting the limit switch(es) 5.........................................................
Fig. 9 Setting the limit switch(es) 6........................................................
The operating manual 0570.8 must be observed and adhered to in all details.
For installation of the limit switch set, the valve may or may not be in situ. However, the preferred option is to install the set before
the valve itself is mounted in the piping.
Special care must be exercised if the limit switch set is to be fitted with the valve in situ. In this case, safety sections 3.1 to 3.6 of
the operating manual (precautionary notes; pressureless, cool condition of valve, ...) must be complied with under all
circumstances.
See operating manual 0570.8 for bolt tightening torques.
Non-observance could cause leakage around the bonnet flange of the installed valve.

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Fig. 1 Exploded view of limit switch set
The set includes one limit switch.
A second limit switch is available on request.
Please refer to Fig. 2 (example: DN 50, set 4) regarding
individual components.
Assembly instructions: see Fig. 3 to Fig. 9.
Fig. 2 Parts list for limit switch set (example: DN 50, set 4).
16 1Spring washer A6 DIN 128 A4
15 1Protective cap A7x16NT ZN 1252 01183921
14 2Hexagon head bolt M12x35 ISO 4017 A2-70
13 4Hexagon nut M5 ISO 4032 8+A2A
12 4Serrated lockwasher J5.3 ISO 6798 FSTPHR
11 4Socket head cap screw M5x35 ISO 4762 8.8
10 1Limit switch XCK-P2110P16 UG1020001 as specified 46001831
91Hexagon nut M8 ISO 4032 8+A2A 00182269
82Grub screw M6x12 ISO 4026 A4-21H
71Grub screw M8x55 ISO 4026 45H + A2A 01037673
61Hexagon head bolt M6x12 ISO 4017 8.8 + A2A
51Contact piece UG1297318 1.4021
41Fixing plate UG1295815 1.4016
31Switching nut UG1295756 1.4021
21Threaded bush UG1295675 1.4021
11Mounting bracket UG1295367 1.4016
Pos. Qty. Description Stock
Halbzeug
Stock
Drawing/Norm-No. Material Ident-No.

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Fig. 3 Dismantling
Grub screw with hexagon nut and washer
Handwheel
Transverse hole in stem nut
Collar bush
First turn valve OPEN.
The valve cannot be operated during the modification work (because the handwheel must be removed).
Withvalveinsitu:
Prior to modification, valve pressure must be released and the valve must be allowed to cool down to below the fluid’s evaporation
temperature in all areas in contact with the fluid in order to effectively prevent any risk of scalding (see operating manual).
The collar bush must be removed with the valve OPEN.
Carefully lever off the collar bush (interference fit on stem nut).
CLOSE the valve.
The valve cannot be operated during the modification work (because the handwheel must be removed).
Dismantle the following parts:
-- Grub screw
-- Hexagon nut
-- Washer
-- Handwheel
-- Collar bush (no longer required)
Fig. 4 Fitting the threaded bush
Stem nut
Grub screw (8), 2 ea.
Transverse hole
approx. 2--3 mm
Threaded
bush
-- Push the threaded bush (2) onto the stem nut up to the stop.
-- Turn the threaded bush (2) such that the threaded holes align with the transverse hole (cf. Fig. 3).
-- Fit the threaded bush (2) on the stem nut with two grub screws (8) so that the grub screws extend into the transverse hole.
-- Turn the grub screws (8) in another approx. 2–3mm.
The switching nut (3) must fit on top, as shown in Fig. 5.

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Note on assembly:
Check the threaded bush (2) for assemblability. If necessary, remove (residual) paint with a suitable solvent.
Fig. 5 Fitting the switching nut and fixing plate
Slot
Hexagon head bolt (6)
with spring washer (16)
Fixing plate (4)
Switching nut (3)
approx. 5 mm
-- Turn the switching nut (3) onto the threaded bush (2). Caution: Left-hand thread!
-- Maintain clearance to the bonnet (approx. 5 mm).
-- Take care to ensure that the slot in the switching nut (3) is located on the side where the mounting bracket (1) is to be fitted.
If the switching nut (3) does not fit properly, check the grub screws (8) and their installed depth (Fig. 4) and turn them in somewhat
more deeply if necessary.
Do not turn the grub screws (8) in too far, as this could cause malfunctioning.
-- Use a hexagon head bolt (6) and spring washer (16) to attach the fixing plate (4) to the threaded bush.
Fig. 6 Fitting the mounting bracket
Alternative bracket mounting position
Mounting bracket (1)
Hexagon head bolt (14)
The following procedure shall be adhered to:
-- If the valve is installed in the system, valve pressure must be released and the valve must be allowed to cool down to below the
fluid’s evaporation temperature in all areas in contact with the fluid in order to effectively prevent any risk of scalding.
-- Preferably, the bracket should be mounted to the left or right of the pipe, but it can also be mounted to the left or right of the
handwheel, i.e. normal to the pipe axis.
-- Unscrew and remove the studs one at a time, and replace each of them in turn with a loosely tightened hexagon head bolt (14)
– together with the bracket (1), of course.
-- Do not yet tighten the hexagon head bolts (14) all the way!

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Use only the accompanying original bolts; non-compliance will result in loss of warranty cover.
Fig. 7 Fitting the contact piece
Grub screw (7)
Contact piece (5)
Hexagon nut (9)
-- Turn the hexagon nut (9) onto the grub screw (7), and slide the contact piece (5) onto the grub screw (7).
-- Slip the assembly from above into the slot in the mounting bracket (1).
-- Now, turn the grub screw (7) all the way into the fixing plate (4), allowing part of it to protrude.
-- Firmly tighten the hexagon nut (9).
-- Position the mounting bracket (1) such that the contact piece (3) is not blocked. The contact piece (3) must be able to rotate on
the grub screw (7).
-- Now, bolt down the mounting bracket (1); see also Fig. 6).
Fig. 8 Fitting the limit switch(es)
Limit switch (10) ”OPEN”
Socket head cap screw (10) with
serrated lockwasher (12) and
hexagon nut (13)
Limit switch (10)
”CLOSED”
The standard set includes one limit switch (10). A second limit switch is available on option.
Install the limit switch (10; at bottom for ”CLOSED” position or at top for ”OPEN” position):
There are two socket head cap screws (11), each with a serrated lockwasher (12) and a hexagon nut, (13) per limit switch set.
-- The mounting bracket (1) has slotted holes to facilitate setting of the limit switches (10).
-- Mount the limit switches (10) in the desired switching positions, and loosely tighten screws.
Note: The set includes sufficient screws for two limit switches.

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Fig. 9 Setting the limit switch(es)
Handwheel with grub screw,
washer and hexagon nut
Limit switch (10) “CLOSED”
Limit switch (10) “OPEN”
Plug (15)
-- Fit the grub screw, the hexagon nut, the washer and the handwheel again.
-- Insert the plug (15).
-- Run the valve to both limit positions, respectively adjusting the limit switch and tightening the screws.
-- The limit switches (10) have snap-action contacts (audible ”click”).
-- After completing the installation and checking the limit switch set (limit switch setpoints adjusted), check the hexagon head bolts
and the remaining studs, and tighten them in accordance with the table entitled ”Bolt tightening torques” (cf. operating manual
0570.8).
-- Check the valve with limit switches for proper functioning.
-- Check the limit switches (10) for correct ”CLOSED” and ”OPEN” function and switching points, as applicable.
This concludes the assembly procedure for the limit switch variant set.
If, for example, the ”OPEN” position does not function properly, adjust the clearance of the switching nut (3) (Fig. 5). Then repeat
all steps described in Fig. 4 to Fig. 8.
Electrical connection
Unscrew the screw to enable
connection
Wire up connections 13, 14 and 21, 22 (behind cover) as follows:
-- NC contact: 21 and 22
-- NO contact: 13 and 14
The scope of supply includes no M16 cable gland (strain relief).

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Technical data of limit switches
Position switch type:
Telemecanique
Design Compact, type XCK P, plastic housing
Osiswitch XCK-P2110P16 (ident. No. 46001831)
Complete unit with ISO M16 x 1.5 cable entry
for cable diameter 4 -- 8 mm
with metal end plunger B1
Type to EN 50047
Enclosure to DIN EN 60529/ IEC 60529
IP 66 -- IP 67
NC+NO (normally closed + normally open) snap-action
auxiliary switches
Contact travel:
Position switch
XCK P2110P16
Snap-action NC+NO auxiliary switches
Closed
Open
NC positive-opening
auxiliary switch
P = Positive opening

KSB Aktiengesellschaft
Johann-Klein-Strasse 9 67227 Frankenthal (Germany)
Tel.: [phone] fax: [phone]
E-mail: [email protected] www.ksb.com
Subject to technical modification without prior notice.0570.812/04-EN 01.01.2017