19
APV_SWmini4_GB-2_042020.indd
Single Seat and Change-over Valve
DELTA SWmini4
Instruction manual: GB – rev. 2
GB
APV
13. Service Instructions - Change-over valve
13.2. Dismantling of wear parts
1.
Remove the covering cap (17).
Valve design with proximity switch holder:
Remove proximity switch holder (18) and actuator screw (19).
Valve design with control unit:
Remove cover, actuator screw and guide rod extension (24).
Remove the control unit.
2.
Unscrew the safety nut (16) while holding up the centering washer
(15), take off centering washer.
3.
Withdraw the valve shaft (4) with guide rod (12) to the bottom.
4.
Withdraw upper housing (2) and remove the housing seal (5).
5.
Separate the yoke (9) from the actuator (13) by releasing the hex.
screws (10). Remove the washer (11) from the yoke.
6.
Remove the o-ring (20).
7.
Take off the seat seal (3) by means of a pointed object from the
valve shaft (4).
8.
Remove the housing seal (5) from the yoke (9).
9.
Dismantle guide bush (8), seat seal (7) and shaft seal (6) from the
yoke.
!
Replacement of actuator seals, see chapter 14.
Service Instructions - Actuator.
10.
In the design with steam chamber, the standard yoke is replaced by
the yoke (9.1) with steam connections. Additionally, one o-ring (9.2)
is required.
illustration SWmini4-DPF
O-ring (9.2)
17
16
15
12
20
13
10
9
5
2
3
8
5
4
7, 6
yoke
SWmini4-DPF (9.1)
