00197463-03_SM_CPP_Customer_EN.pdf - 第95页
8 Screwed joint, silencer and holding circuit 8.2 Replacing the screwed joint Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018 95 Preparation ► Remove the head from the machine. For details about removing and fitti…
8 Screwed joint, silencer and holding circuit
8.2 Replacing the screwed joint
94 Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018
Fig.158: Overview of installation points for the parts from the "Seal kit for holding circuit CPP" [03095007‑xx]
NOTICE
The seals(3) for the two-part silencer are no longer needed when using the one-part silen-
cer.
8.2 Replacing the screwed joint
NOTICE
Observe the head version
Different screwed joints are used for the SIPLACE CPP heads up to version 04 and those
from version 05 onwards.
Relevant differences for removal and installation work will be mentioned.
Parts, equipment and tools
●
Select the required screwed joint:
– Up to version 04: screwed joint assembly CPP [03080101-xx]
– From version 05: screwed joint assembly CPP [03080144‑xx]
Replace any defective seals, where required:
●
Seal kit for holding circuit / CPP [03095007‑xx]
Keep any seals which are not needed.
Overview
► Observe the following section:
8.1 "Overview of screwed joint, holding circuit and seals" [}93]
8 Screwed joint, silencer and holding circuit
8.2 Replacing the screwed joint
Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018 95
Preparation
► Remove the head from the machine. For details about removing and fitting the placement
head, refer to the service manual for your machine.
fit the head on the head mount [03056231‑xx].
► Make sure that the component sensor protective cap is fitted.
1.1.3 "Protecting the component sensor" [}8]
Removal
► If required, dismantle the front plate.
5.1 "Replacing the front plate [03061102-xx]" [}35]
Fig.159: Screwed joint
► Unscrew the fixture nut for the screwed joint until
you can remove the screwed joint.
► Remove the screwed joint together with the hold-
ing circuit housing and one-part silencer.
Installation
► Follow the removal instructions in reverse order for installation. Also observe the following in-
structions:
CAUTION
Installation instructions
► Insert the screwed joint and hand-tighten the fixture nut for the screwed joint.
► Up to version 04 only: Always attach the retaining clips for the silencer from above.
If these are fitted from the side, the seals(3a) and (3b) might be damaged.
All versions:
► Observe the installation instructions in the following sections:
8.3.3 "Replacing the silencer" [}97]
5.1 "Replacing the front plate [03061102-xx]" [}35]
► Observe in particular the torques specified!
See also
2 8.3 "Silencer" [}96]
8 Screwed joint, silencer and holding circuit
8.3 Silencer
96 Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018
8.3 Silencer
8.3.1 Overview of silencer versions
There are two versions of the silencer:
Fig.160: Two-part silencer [03061440‑03]
Fig.161: One-part silencer [03061440‑04]
8.3.2 Checking the silencer for contamination
Problem
Fig.162: Contaminated silencer
If the silencer [03061440‑xx] for the CPP head is full of
dust, this reduces the flow of air. This then reduces the
vacuum for the holding circuit for all 12 DP drives.
Contaminants which are sucked up will block the
pores of the silencer. This increases the pressure
building up behind the 12 venturi nozzles, the flow
through is reduced and the vacuum capacity of the
venturi nozzles is reduced.
Contaminated silencers reduce the holding circuit va-
cuum. A reduced vacuum can lead to numerous DP
stations being automatically switched off per head in
the production environment.
Analysis of holding circuit
►
At the station, perform a vacuum check in the holding circuit.
(See "Service Manual: Testing the vacuum system with closed nozzles" [00196101‑xx])
Target vacuum: approx. -850mbar
The following error situations could occur during this check:
All 12 DP drives demonstrate a reduced vacuum compared to the target value.
The values for the individual DP drives are however relatively even.
If this error situation occurs, it is probable that the silencer is dirty.