WABCO 973 002 Test Instruction Download Page 8

8/9

© 2006 American Standard  All rights reserved  973 002 981 3/05.2006

4

Test side valve

Fig. 4  Test diagram "Side Valve"

Orifice diameter 2.5

8 bar

Manometer 11

Manometers 12/21

Shut-off cock 11

42

1 dcm³

Manometer 41

Shut-off cock 41

Fine control valve 41

8 bar

Shut-off cock 22

Shut-off cock 43

11

41

22

12

Shut-off cock 21

Manometer 22

21

43

Manometer 43

8 bar

Fine control valve 22

Test step

Manometer (M)

Comment

Default value

Test value

M 11
bar

M 41
bar

M 22
bar

M 43
bar

M 12 / 
M 21
bar

Shut-off cocks 12, 21 and 22: 
Open the pass.
Shut-off cock 12/21: Shut the 
pass.

0

0

0

0

0

Fine control valve 41: 
Increase pressure.

0

2,7

0

0

0

Fine control valve 22: 
Increase pressure.

0

2,7

2,5

0

0

Fine control valves 11 and 43: 
Increase pressure.

5,5

2,2

2,5

5,5

-

Pressure flows off via nozzle at 
connection 21:

Fine control valve 41: 
Increase the pressure until the 
pressure drops by 3.5 bar at 
M 12/21 (test bench: M 3). 
Wait for this value at M 12/21, 
then test M 41 (test bench: 
M 2).

-

-

2,7

4,5...5,3

2,5

2,5

5,5

5,5

M 12/21
- 3.5 bar in 
compari-
son to the 
value in 
the line 
before.

-

Precision control valve 11, 22, 
41 and 43: Reduce the pres-
sure.

0

0

0

0

0

Summary of Contents for 973 002

Page 1: ...product or document number in INFORM Test Bench 435 197 000 0 Operating Instructions General Repair and Test Information Potential hazard situation which can cause serious personal injury or death if...

Page 2: ...output side of pressure regulator D must be unpressurised Table 1 Normal position of stopcocks on the test bench If you do not have test bench 435 197 000 0 you must test the device according to the f...

Page 3: ...e Test value M 11 bar M 41 bar M 42 bar M 43 bar M 12 M 21 bar M 22 bar Shut off cocks 11 12 21 and 43 Open the pass 0 0 0 0 0 0 Fine control valves 11 and 43 Increase pressure slowly 8 0 0 8 8 0 Fine...

Page 4: ...y an immediate drop in pressure Shut off cock 41 Open the pass 8 0 0 8 0 Fine control valve 41 Increase and lower the pressure rapidly twice 8 8 0 8 8 0 0 0 8 8 0 8 8 0 M 22 test bench Manome ter 4 mu...

Page 5: ...alue in the line before Fine control valve 41 Increase pressure slowly 8 V3 0 8 P3 Pressure progression test upwards Fine control valve 41 Increase pressure slowly 8 8 V4 3 2 0 0 8 8 P5 Pressure displ...

Page 6: ...y 8 8 8 8 8 P6 Check for leaks Check the tightness of the entire device separation joints including exhaust 8 8 8 8 8 P7 Permissible leakage 8 cm3 min Never install a leaking trailer con trol valve on...

Page 7: ...ues 973 002 0 Variant P1 P2 V3 P3 V4 P5 P6 P7 500 M41 0 2 8 7 7 7 2 M41 0 2 7 7 7 7 501 M41 0 2 0 1 M41 0 2 0 1 7 5 8 8 7 2 0 0 4 503 M41 0 2 8 7 7 7 2 M41 0 2 7 7 7 7 505 M41 1 0 2 0 7 2 7 8 8 0 8 1...

Page 8: ...bar M 43 bar M 12 M 21 bar Shut off cocks 12 21 and 22 Open the pass Shut off cock 12 21 Shut the pass 0 0 0 0 0 Fine control valve 41 Increase pressure 0 2 7 0 0 0 Fine control valve 22 Increase pres...

Page 9: ...2006 Table 4 Test steps Side Valve Shut off cocks 12 21 and 22 Shut the pass Shut off cocks 11 41 42 and 43 Open the vent 0 0 0 0 0 Clean device and unclamp Test step Manometer M Comment Default valu...

Reviews: