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06/2002 E dition Studen t Guide H S-50 Advance d I 5 DLM1 C&P H ead 86 5.5 .3.3 A dj ust men t s o f the Air Pr essu re Values w i th the H elp o f a Com pr esse d Air T e sting De vice fi g 5.5 - 4 F lo w cha rt det…
Student Guide HS-50 Advanced I 06/2002 Edition
5 DLM1 C&P Head
85
5.5.3 Air Pressure Values
5.5.3.1 Tools and Devices
– A set of slotted screw drivers
– Compressed air testing device
5.5.3.2 Adjustment of Air Pressure Values
5
fig 5.5 - 3 Adjustment of air pressure values
KEY:
(1) Forced air unit / DLM1
(2) Micro - relay valve
(3) Restrictor valve for the reject circuit
(4) Restrictor valve for the pick - up / placement circuit
NOTE
Use a nozzle type 914 to adjust the blast air. 5
4
3
2
1
06/2002 Edition Student Guide HS-50 Advanced I
5 DLM1 C&P Head
86
5.5.3.3 Adjustments of the Air Pressure Values with the Help of a Compressed Air Testing
Device
fig 5.5 - 4 Flow chart determining air pressure values
NOTE
Air pressure values, displayed on the screen of the station computer, under option "Measure air
pressure" of the "Single functions", or in the SITEST program, do not correspond to the air
pressure values actually set at the nozzles.
They solely serve to check that the forced air valve is functioning correctly.
Therefore, the air pressure may not be adjusted with the values displayed on the screen.
Instead, use only the values determined with the compressed air testing device. 5
4
1
2
3
Student Guide HS-50 Advanced I 06/2002 Edition
5 DLM1 C&P Head
87
➠ Adjust to the values of the table below:
NOTE
Both forced air circuits are controlled by a single valve and therefore are mutually dependent.
Using two different restrictor valves (compare item 3 and 4 in Fig. 5.1.10), it is however possible,
to adjust differing pressure values for each circuit. 5
➠ Repeat these adjustments several times, as the pick - up / placement circuit are mutually
dependent.
NOTE
Make sure that the test sensor tube is attached air - tight on the nozzle. 5
5.5.4 RSF Digital Rotary Transducer of DP - Axis
5.5.5 RSF Digital Transducer of DP - Axis
➠ Remove sleeve 1 and insert the star zero point gauge, in order to mechanically fix the star.
➠ Now, remove sleeve 4 as well and align the transducer.
➠ With the help of a parallel pin, set the digital transducer of the dp - axis to 1.5 mm, parallel to
the glass pane of the segment.
NOTE
A parallel pin of 1.4 mm must easily fit through the gap, a parallel pin of 1.6 mm must be too big
to fit. 5
Forced Air Values
Adjustment with Compressed Air
Testing Device
Measurement taken on Nozzle
Displayed on the Monitor:
(Only in Pick - Up and Placement
Circuit)
pick - up / placement
circuit 150 mbar (100 - 200 mbar) e.g.: 250 mbar
reject circuit 250 mbar (200 - 300 mbar) reject cicuit does not have a sensor