00195166-0402_SM_D4_EN.pdf - 第236页
Settings C&P12 Performing a Vacuum T est on the C&P 6/12 DLM Heads 236 Serv ice Manual SIPLACE D4 Scenario 2 Example of defective vacuum values, which indicate a damaged silic one hose on segment 1 and an open no…
Settings
Performing a Vacuum Test on the C&P 6/12 DLM Heads C&P12
Service Manual SIPLACE D4
235
Vacuum test with closed nozzle
X Start SITEST and perform the first reference
run, if required.
X Select the gantry for the required vacuum test
on the C&P6/12 placement head.
X Place all the nozzles for the placement head in
the nozzle changer.
X Replace the full magazine at one magazine
position with the magazine holding the test
nozzles [03067029-01].
X Go to the Nozzle on head for segment 1 menu
and select the nozzle type which was originally
configured for this magazine position.
X Select the checkbox
All segments as
segment 1
X Pick up the vacuum test nozzles with all
segments.
X Select the vacuum test menu and perform a
vacuum test.
X The error message
Vacuum difference open/
closed too low
can be ignored here.
As you can see in the measurement values
here, the
Open
values deviate by up to 3mbar
from the
Closed
values.
However, this is within the tolerance of 5
mbar, in which correct function can be reliably
assumed.
X If this tolerance value is exceeded, check the
valve plunger and vacuum plate and replace
these a a precaution, if necessary.
Scenario 1
Example of faulty vacuum values, which indicate a
damaged vacuum plate at segment 2 here.
NOTE: Irreparably damaged vacuum
plate
If both measurements for a particular
segment are around 640mbar, this
indicates that the vacuum plate is
irreparably damaged.
Settings
C&P12 Performing a Vacuum Test on the C&P 6/12 DLM Heads
236 Service Manual SIPLACE D4
Scenario 2
Example of defective vacuum values, which
indicate a damaged silicone hose on segment 1
and an open nozzle at segment 3.
NOTE: Silicone hose defect
Under certain circumstances, silicone hose defects might only be detected when the segments
are moved out. It could therefore be advisable to release the Z axis and to perform a vacuum
test of the segment in its lowered state (single measurement run).
NOTE: Missing valve plunger
If both measurements for a particular segment are only around 210mbar, this indicates that the
valve plunger is missing.
Vacuum values and valve plunger
positions
If the valve plunger is in the position "nozzle
open", the vacuum area will be sealed against
the environment with two seals.
If the valve plunger is in the position "nozzle
closed", the vacuum area (at the rear, near the
drive) will be sealed against the environment
with only one seal.
If the "vacuum value closed" is too low, this
indicates that the seal is not sufficiently greased or
that it is damaged.
Settings
Other Mechanical Settings on the Star C&P12
Service Manual SIPLACE D4
237
Maintenance recommendations:
Use the valve plunger ONLY when greased. (Isoflex topas).
Replacing the valve plunger also means:
– Clean the valve plunger housing! Otherwise good plungers with new grease are installed in the
old, contaminated environment.
– Grease the valve plunger: Use the appropriate tool [03049689-01] to grease the valve plunger.
– Perform vacuum tests with the red SOKO nozzles, vacuum test DLM [03067029-01].
Regularly check the sleeve-nozzle vacuum plate "blue" (available from 10/2008, white) and replace
when necessary (with 1.5mm Allen key).
6.3.13 Other Mechanical Settings on the Star
Set the air blast tube so that it overlaps the circular guide frame by 0.7 mm.