00197469-02_SM_Twin_Kunde_EN - 第49页

4 Pneumatic and pressure control valve (PRV) 4.7 Replacing the pneumatic rotary supply Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 49 Fig.76: Cleaning the pneumatic rotary supply seat 2 ► Clean the…

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4 Pneumatic and pressure control valve (PRV)
4.7 Replacing the pneumatic rotary supply
48 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020
Fig.73: Removing the pneumatic rotary supply
► Pull the pneumatic rotary supply out of
the DP unit.
Installation
Fig.74: Cleaning the pneumatic rotary supply seat 1
► Clean the inside of the DP station shaft
with a cotton swab soaked in isopro-
panol.
Clean both sides as the cotton swab
will not be able to get fully into the guid-
ance from just one side.
Fig.75: Cleaning the pneumatic rotary supply
► Clean the shaft of the pneumatic rotary
supply.
4 Pneumatic and pressure control valve (PRV)
4.7 Replacing the pneumatic rotary supply
Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 49
Fig.76: Cleaning the pneumatic rotary supply seat 2
► Clean the seat with compressed air.
Cover the outlet on the other side while
doing this.
Fig.77: Inserting the pneumatic rotary supply
► Insert the new pneumatic rotary supply
into the seat.
Fig.78: Silicone hose 4.5x2.5x26
► Fit the hose from the pneumatic rotary
supply onto the elbow. Connect the
hose so that no tension is applied to
the pneumatic rotary supply.
 CAUTION!
The new hose must be mounted abso-
lutely twist-free!
.
4 Pneumatic and pressure control valve (PRV)
4.7 Replacing the pneumatic rotary supply
50 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020
Fig.79: Hose on elbow version 1 (old)
(pipe holder)
Fig.80: Hose on elbow version 2 (new)
(pipe holder and clamp)
The procedure is basically the same for both
elbow versions:
Check the following points:
► The pneumatic rotary supply and the Z
axis must be centered in their guidance
(1)
.
► The short hose must always remain
against the pneumatic rotary supply
stopper.
Press or move the hose on the elbow
to set its position.
Press the hose onto the elbow connec-
tion or away from it, until the axis is po-
sitioned in the center.
► The short hose must also run horizont-
ally(2)
to the elbow, without tension.
 CAUTION!
An eccentric position of the Z axis can
alter the balance of forces and lead to
placement errors.
.
► Reconnect the long hose at the top.
► Fit the buffer.
3.1 "Replacing the return unit buffer" [}17]
Follow the removal instructions in reverse order for further installation.
Also observe the installation instructions in the following section:
4.6 "Replacing the sleeve with ball fixing/seal" [}43]