00197469-02_SM_Twin_Kunde_EN - 第39页

4 Pneumatic and pressure control valve (PRV) 4.4 Replace hoses Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 39 Fig.56: Hose on elbow (old version) Fig.57: Hose on elbow (new version) Check the foll…

4 Pneumatic and pressure control valve (PRV)

4.4 Replace hoses

38 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020

4.4.1.1 Replacement of elbow version 1

► Dismantle the buffer on the return unit.

3.1 "Replacing the return unit buffer" [}17]

► If replacing the trick and feather unit, dismantle the control cable first.

5.5 "Replacing the control cable" [}76]

Fig.53: Disconnecting the hose

► Pull the long hose(1) down and off the

precision tube.

(silicone hose 4.5x2.5.96

[03046416‑xx])

Fig.54: Disconnecting the hose

► Pull the silicone hose 4.5x2.5x26

[03046203‑xx](1)

off the pneumatic

rotary supply(2)

and off the elbow (3).

► Fit the new silicone hose 4.5x2.5x26

[03046203‑xx] onto the rotary supply.

This is 26 mm long.

 NOTICE!

Push the hose onto the pneumatic

rotary supply as far as the stopper.

For all other connections, press on ap-

prox. 4-5 mm of the hose.

Fig.55: 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)

4.4 Replace hoses

Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 39

Fig.56: Hose on elbow (old version)

Fig.57: Hose on elbow (new version)

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 on the return unit.

3.1 "Replacing the return unit buffer" [}17]

► Fit the control cable.

5.5 "Replacing the control cable" [}76]

4 Pneumatic and pressure control valve (PRV)

4.4 Replace hoses

40 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020

4.4.1.2 Replacement of elbow version 2

NOTICE

Contamination

When replacing this hose, the strain relief should be cleaned with a pipe cleaner and the

pneumatic rotary supply should be replaced. See also the SIPLACE Job Card Preventive

Maintenance TwinHead [00197604-xx] for details.

► Dismantle the buffer on the return unit.

3.1 "Replacing the return unit buffer" [}17]

Fig.58: Elbow

► Pull the hose(2) off the pneumatic

rotary supply(1)

and off the elbow.

► Push the new hose as far as the stop-

per onto the pneumatic rotary supply.

► Fit the new hose on the elbow.

 CAUTION!

The new hose must be mounted abso-

lutely twist-free!

► Fit the buffer on the return unit.

3.1 "Replacing the return unit buffer" [}17]