00197469-02_SM_Twin_Kunde_EN.pdf - 第26页
4 Pneumatic and pressure control valve (PRV) 4.1 Replacing the air filter 26 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 CAUTION Observing the orientation Observe the orientation of the replacement …
4 Pneumatic and pressure control valve (PRV)
4.1 Replacing the air filter
Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 25
4 Pneumatic and pressure control valve (PRV)
NOTICE
Replacing small parts on the PRV
For details about replacing the small parts on the PRV, please read the job card:
► JobCard Preventive Maintenance SIPLACE TwinHead [DE:00197604‑xx]
[EN:00197603‑xx]
4.1 Replacing the air filter
Parts
●
Air filter assembly [03051420-xx] (suitable for all Twin types)
NOTICE
Head board function state
The head board must have at least FS 09.
Overview
Fig.24: Air filter assembly (example of Twin VHF shown)
1. Air filter assembly
2. Screws fastening the air filter
CAUTION!
Only digital PRV
Do not use an older filter with the new
PRV or a new filter with an analog
PRV. This filter may ONLY be used
with the digital PRV. The hose volume
specified will only work correctly here.
.
Fig.25: Air filter assembly
1. Air filter, closed
2. Air filter, open, with replacement filter
FE50 pulled out halfway
3. Replacement filter FE50 [03047489-xx]
The digital PRV has a precision tube in the
vacuum supply to the nozzle. Between this
tube and the vacuum connection of the PRV
you will find the air filter which protects the
generator from contaminants introduced via
the nozzle (this also applies to the analog
PRV).
4 Pneumatic and pressure control valve (PRV)
4.1 Replacing the air filter
26 Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020
CAUTION
Observing the orientation
Observe the orientation of the replacement filter.
► The replacement filter is pushed thicker end first into the lower opening of the air fil-
ter.
► Otherwise the air filter could be damaged.
CAUTION
Housing could break
Take care when screwing the housing into place.
Preparation
► Remove the head from the machine. For details about removing and fitting the placement
head, refer to the service manual for your machine.
Removal/installation
Removal and installation of the air filter follows the same procedure as that for the pressure control
valve.
4.2 "Replacing the pressure control valve (PRV)" [}27]
Observe the following instructions:
► Tighten the air filter cover and the two fastening screws hand-tight.
4 Pneumatic and pressure control valve (PRV)
4.2 Replacing the pressure control valve (PRV)
Service Manual SIPLACE TwinStar (Twin, Twin HF, Twin VHF) 07/2020 27
4.2 Replacing the pressure control valve (PRV)
NOTICE
Head board function state
The head board must have a function state of at least 09.
NOTICE
Converting the analog/digital PRV
► To convert the analog PRV to a digital one, read the retrofit instructions "Digital pres-
sure control valve and new TH air filter" [DEEN:00196286‑xx].
Parts
●
Digital pressure control valve for the TwinHead [03058802-xx] (suitable for all Twin types)
Overview
Fig.26: PRV and air filter (example of Twin VHF shown)
1. Air filter assembly [03051420-xx]
2. Screws fastening the air filter
3. Digital pressure control valve for the
TwinHead [03058802-xx]
In contrast to the analog version, the digital
PRV has a thin high-precision tube (addi-
tional volume tube) in the vacuum supply to
the nozzle. Between this tube and the
vacuum connection of the PRV, there is an
air filter attached to the Twin module.
Preparation
► Remove the head from the machine. For details about removing and fitting the placement
head, refer to the service manual for your machine.
Removal
► Dismantle the buffer on the return unit.
3.1 "Replacing the return unit buffer" [}17]
► For Twin VHF only:
Dismantle the head main board.
(in the Twin VHF the PRV is removed upwards, in the Twin and Twin HF, it is pulled sideways
out of the head.
5.1 "Replacing the head main board" [}65]