00197490-03_SM_CP20-P-M2_EN保养维护 - 第66页

7 Holding circuit, aperture ring and silencer 7.1 Replacing the holding circuit/reflecting ring 66 Service Manual SIPLACE SpeedStar (C&P20 P / C&P20 M2) 03/2018 Fig.101: Cleaning ► Clean the seat of the aperture…

7 Holding circuit, aperture ring and silencer

7.1 Replacing the holding circuit/reflecting ring

Service Manual SIPLACE SpeedStar (C&P20 P / C&P20 M2) 03/2018 65

Removal

Fig.98: Dismantling the cover

► Remove the screw fastening the cover(1) and

then take the cover off.

Fig.99: Screws fastening the aperture ring

► Remove the three screws(1) fastening the aper-

ture ring.

Fig.100: Removing the aperture ring

► Carefully lever the aperture ring off the locating

pins. Make sure that the O-ring is not damaged.

7 Holding circuit, aperture ring and silencer

7.1 Replacing the holding circuit/reflecting ring

66 Service Manual SIPLACE SpeedStar (C&P20 P / C&P20 M2) 03/2018

Fig.101: Cleaning

► Clean the seat of the aperture ring with a lint-free

cleaning cloth, if required.

 CAUTION!

Do not use compressed air for cleaning!

Installation

Fig.102: O‑Ring and sealing disc

► If the O-ring (1) is damaged, replace it with a new

one.

► Correctly position the sealing disc on the aperture

ring. Make sure all openings are aligned.

Fig.103: Inserting the aperture ring

► Position the aperture ring (with sealing disc) cor-

rectly onto the locating pins in the star carrier.

7 Holding circuit, aperture ring and silencer

7.1 Replacing the holding circuit/reflecting ring

Service Manual SIPLACE SpeedStar (C&P20 P / C&P20 M2) 03/2018 67

Fig.104: Fastening the holding circuit/aperture ring

► Venturi operation with holding circuit only:

Fix the holding circuit into place with the three

fastening screws. Tighten the screws to a torque

of 0.25 Ncm.

► Vacuum pump operation with aperture ring

only: Fix the aperture ring with the three fasten-

ing screws. Tighten the screws to a torque of 1.3

Ncm.

Fig.105: Greasing the O-ring

► Grease the O-ring. To do this, use a cleaning

stick coated with "Isoflex Topas 5051 50ml

(green)".

Fig.106: Fitting the cover

► Venturi operation only:

Fit the silencer. Tighten the screw fastening the

silencer only hand-tight.

► Vacuum pump operation only:

Fit the cover. Tighten the screw fastening the

cover only hand-tight.

► Follow the removal instructions in reverse order for further installation.