00197463-03_SM_CPP_Customer_EN.pdf - 第96页

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-…

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. -850mbar

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.

8 Screwed joint, silencer and holding circuit

8.3 Silencer

Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018 97

Solution

► Replace the silencer in this event.

► Check the silencer regularly when you service the head, to see if there is any dirt and replace

as a preventative measure if necessary.

8.3.3 Replacing the silencer

NOTICE

Various versions

There are two different versions of the silencer (one-part and two-part).

The removal and installation steps are largely the same for both versions. Any relevant dif-

ferences will be mentioned explicitly.

Parts, equipment and tools

Select the required spare part:

Fig.163: One-part silencer with holding circuit housing

[03081381‑xx] (all versions)

All head versions:

●

One-part silencer with holding circuit housing

[03081381‑xx]

 NOTICE!

The one-part silencer has downwards compatib-

ility.

We recommend that you use the versions for all

heads.

Fig.164: Silencer assembly CPP [03061440‑xx] (two-part, up to

version 04)

Up to head version 04:

●

Silencer assembly CPP [03061440‑xx] (two-part)

 CAUTION!

Use only the improved silencer from version -02

onwards with the plastic pin and white dot on the

plastic flange.

Replace any defective seals, where required:

●

Seal kit for holding circuit / CPP [03095007‑xx]

Keep any seals which are not needed.