Diagnostic Manual, Body and Accessories,
Volume 1.1
Pneumatic Test Program - Test (Orthopedic Seat Backrest)
|
Data (mbar)
| Test Procedure |
Permissible deviation |
| Allowable system leakage at 600 mbar
pressure in 1 minute. |
 30
mbar |
Preparation for Test:
1. Provide access to PSE control module (A37) and disconnect grey
OSB pneumatic line with socket from PSE control module.
2. Connect tester to disconnected pneumatic line using connector
202 805 03 44.
Parts Required for Test:
1 Connector 202 805 03 44
2 Pneumatic hose, 50 mm long 007 997 61 82
1 Pneumatic line, 1 m long 000 158 14 35
Note:
The connections on the PSE control module and pneumatic multiple connector
are marked with their German acronyms. In other words:
ZV (German) = CL (English),
SRU (German) = MVA (English),
OSL (German) = OSB (English).
|
 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Complete multi-contour backrest
system
Lower OSB center insert |
Yellow connector
on tester. |
Set pressure adjuster for lower OSB
center insert to maximum.
Set pressure adjuster for upper OSB center insert and seat cushion length
to minimum.
Set side bolster rocker switch to minimum.
Apply 600 mbar pressure in each of the 3 height settings.
|
Pressure loss
30 mbar in
1 minute. |
5.0-9.0 |
| 2.0 |
Complete multi-contour backrest
system
Upper OSB center insert |
Yellow connector
on tester. |
Set pressure adjuster for upper insert
to maximum.
Set pressure adjuster for lower OSB center insert and seat cushion length
to minimum.
Set side bolster rocker switch to minimum.
Apply 600 mbar pressure in each of the 3 height settings.
|
Pressure loss
30 mbar in
1 minute. |
5.0-9.0 |
| 3.0 |
Complete multi-contour backrest
system
Side bolster |
Yellow connector
on tester. |
Set side bolster rocker switch to
maximum.
Set pressure adjuster for lower and upper OSB inserts and seat lengthen
to minimum.
Apply 600 mbar pressure in each of the 3 height settings.
|
Pressure loss
30 mbar in
1 minute. |
5.0-9.0 |
| 4.0 |
Complete multi-contour backrest
system
Seat cushion length |
Yellow connector
on tester. |
Set pressure adjuster for seat cushion
lengthen to maximum.
Set pressure adjuster for lower and upper OSB center insert to minimum.
Set side bolster rocker switch to minimum.
Apply 600 mbar pressure in each of the 3 height settings.
|
Pressure loss
30 mbar in
1 minute. |
5.0-9.0 |
Preparation for Test:
1. Connect tester to the grey OSB pneumatic line which leads to either
the pressure reservoir below the rear seat cushion or to the control valve,
using connector 202 805 03 44.
Notes:
 When testing the pneumatic lines
with the pressure reservior, cap the pneumatic lines which lead to the control
valves.
When testing the pneumatic lines
with control valves, disconnect the pneumatic line at pressure reservior
and cap using
connector 124 805 02 44.
The disconnected pneumatic lines are to be reconnected to the distributor
with connector 007 997 61 82.
Parts Required for Test:
1 Connector, 50 mm long 007 997 61 82
1 Connector 202 805 03 44
1 Cap 000 987 11 45
2 Connector 124 805 02 44 |
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 5.0 |
Line and pressure reservoir |
Yellow connector
on tester. |
Apply 600 mbar pressure to line and
pressure reservoir. |
Pressure drop
5 mbar in
1 minute.
|
32 8.0,
Pressure reservoir leaks. Replace reservoir. |
| 6.0 |
Line and control valve |
Yellow connector
on tester.
|
Set pressure adjusters as well as
rocker switch at control valve to mimmum.
Apply 600 mbar pressure to line and control valve.
|
Pressure drop
5 mbar in
1 minute. |
32 7.0-8.0 |
Preparation for Test:
1. Connect tester to separation connection underneath seat.
Parts Required for Test:
1 connector 202 805 03 44
2 Rubber hose, 50 mm long 007 997 61 82
1 Pneumatic line, 1 m long 000 158 14 35
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 7.0 |
OSB control valve pressurized
in each of the 3 height positions
|
Yellow connector
on tester. |
Set pressure adjusters and rocker
switches to minimum.
Apply 600 mbar pressure to pressure regulator.
|
Pressure drop
5 mbar in
1 minute. |
Control valve or pneumatic line to
control valve leaks.
Replace. |
Preparation for Test:
1. Connect tester to one end of pneumatic line and plug other end with cap,
part no. 000 987 11 45.
Parts Required for Test:
1 Cap 000 987 11 45
1 Rubber hose, 50 mm long 007 997 61 82
1 Connector 202 805 03 44
1 Connector 124 805 02 44
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 8.0 |
Leakage while pressurized |
Yellow connector
on tester. |
Apply 600 mbar pressure
to lines. |
Pressure drop
0 mbar in
1 minute.
|
Pneumatic line with connectors leak.
Replace. |
Preparation for Test:
1. Provide access to connector between control valve and pneumatic lines.
Parts Required for Test:
1 Rubber hose, 50 mm long 007 997 61 82
1 Pneumatic line, 1 m long 000 158 14 35
|
|
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 9.0 |
Air cushion and pneumatic line
leakage in side bolster or seat cushion |
Yellow connector
on tester. |
Apply 200 mbar pressure individually
to each line in the pneumatic harness.
|
Pressure drop
5 mbar in
1 minute. |
Air cushion and pneumatic line in
side bolster or seat cushion leak.
Replace. |
|
Printable
version
