Maintenance
25
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit
C 7520
Operating instructions
12.4.1 Disassembling the drive
The following section is based on the assumption that the ball valve is a
ball valve with a handle. However, if the ball valve is fitted with a drive, the
drive must be removed for the maintenance work.
Fig. 15: Disassembling the drive
Perform the following working steps:
1.
Disconnect the drive from the power supply.
2.
Remove the four fastening screws (4), which connect the drive (1) in-
cluding the bridge (2) with the ball valve (5).
3.
Lift the drive off and put it to one side.
4.
Remove the adapter (3) from the control rod and put it to one side.
ü
The drive has been disassembled.
i
The centre part of the ball valve can be removed irrespective
of the design (internal thread, flange) of the ball valve.
12.4.2 Remove the ball valve and open
i
The seal on the ball valve can also be replaced
if the ball valve is not removed. However, expanding
makes the work much easier
Perform the following working steps:
1.
Disconnect all hydraulic connections from the changeover unit.
2.
Remove the pressure gauge cable from the control and remove it
from the cable conduit.
3.
Remove the four screws above on the ball valve and then pull the ball
valve downwards.
ü
The ball valve has been removed.
Flansche lösen
BA 22300
Fig. 16: Removing the centre part of the ball valve
Perform the following working steps:
1.
Loosen the nuts (1) individually by approx. 1 to 2 turns. Only remove
the nuts completely afterwards doing this.
2.
Remove the tension rods (4) the centring sleeves (3) and the flange
(2).
ü
Ball valve opened
12.4.3 Remove the seals
6
7
1
2
3
4
5
8
9
10
9
7
Fig. 17: Remove the seals in the ball valve
1
3
4
5
2
3
4
5
2
1
