7
10/2018
EN1377027BA
12.5
Checking dismantled valve parts
→
Check dismantled valve parts for damages
and aging phenomena.
→
Replace diaphragm in case of cracks or
fractures.
→
Replace seals if they are brittle, fissured or
strongly deformed.
12.6
Cleaning parts, checking valve seat
1. Clean the diaphragm
6
.
2. Clean all surfaces that are in contact to
seals or diaphragm.
3. Remove dirt inside control bores, control
spaces and on threads.
4. Clean the core
9
.
5. Remove dirt inside control bores, control
spaces and on threads.
6. Check whether the valve seat
3
is intact.
Valve seat must not have any damages.
3
Valve seat in valve body
7. If the valve seat is
damaged
you must repla-
ce the valve body.
12.7
Replacing spare parts
!
CAUTION
Risk of injury caused through the
installation of wrong parts
Installation of wrong components may
lead to early wear or early failure of the
component and more risk of injury.
→
Only install original spare parts.
→
Specify the valve number when ordering a
spare part kit.
Buschjost recommends to replace all spare
parts included in the kit at the same time.
Spare parts related to the core tube assembly
1. Replace the used core
8
and the compres-
sion spring
9
inside core.
10
4
9
8
Replace core and compression spring
2. Replace o-ring
11
that is situated on the
core tube
10
. Replace the o-ring
12
that is
situated in the valve cover.
6
4
12
11
Replace o-rings
3. Screw the core tube
10
on valve cover
4
− tighten only hand tight.
Spare parts related to the valve body
→
Replace the used diaphragm
6
and the
compression spring
7
above diaphragm.
7
6
Replace diaphragm and compression spring
12.8
Reassembling valve
1. Put diaphragm
6
centered on the valve
seat and fit compression spring
7
into
diaphragm.
7
6
Put diaphragm and compression spring
2. Put the valve cover
4
on valve body.
3. Fix the valve with six fixing screws
5
(Torx
M4 x 16 mm). Tighten screws with 2 Nm.
tightening torque: 2 Nm ±10%
5
2
Insert and tighten fixing screws
4. Tighten the core tube
10
at its screw
piece
2
with 20 Nm.
wrench size 27; tightening torque 20 Nm ±2
12.9
Mounting solenoid
1. Push the Click-on
®
solenoid
1
onto core
tube
10
.
2. Slightly bend back fixing clamp
2
and snap
solenoid to spring fixing clamp.
2
1
10
Mount solenoid 9101
info
Solenoid and fixing clamp may be
rotated 360°. Choose an appropriate angle.
13
Re-commissioning
1. Check valve’s switching function without
fluid (refer to section
10.1
).
2. Prime the valve slowly (refer to section
10.2
).
3. Perform a leak and strength tests (refer to
section
12.2
).
14
Decommissioning
1.
!
DANGER
Disconnect the solenoid from
power supply.
2.
!
WARNING
Depressurize the pipe system.
Completely drain the pipework. Deal with
water-endangering fluids according to legal
regulations.
3. Loosen fixing screws from valve cover.
4. Unmount the valve.
5. Drain and dry the valve.
A2
