Tadano GR-700N - (Pneumatic Pressure)

Y-3.
Y-3.
Adjusting Pressure (Pneumatic Pressure)
24
WY03-0351E
Y-3 Adjusting Pressure (Pneumatic Pressure)
Item
Set pressure
Remarks
No. in
circuit
diagram
kPa kgf/cm
2
psi
Pressure regulator
On-load 740
+29
–20
7.5
+0.3
–0.2
107
+4
–3
Check that the air dryer
recovers its
performance
during unloading.
200
Unload 830 ± 20 8.5 ± 0.2 120 ± 3
Safety valve
Cracking pressure 850 8.7 123
Must be no leakage
within pressure regulator
operation range.
197
Full opening
pressure
950 ± 20 9.7 ± 0.2 138 ± 3
Air low-pressure
switch
(low air pressure
warning)
Light-on pressure 540
+10
–49
5.5
+0.1
–0.5
78
+1.5
–7
173
Light-off pressure 540
+59
–49
5.5
+0.6
–0.5
78
+8.5
–7
Reducing valve
For service brake
of front wheels
None
194
For service brake
of rear wheels (al
so
for brake lock)
440 ± 29 4.5 ± 0.3 64 ± 4 Check upper tank.
Air pressure switch
(stop lamp)
Operating pressure
29
+20
–10
0.3
+0.2
–0.1
4.2
+3
–1.5
187
Air low-pressure
switch
(parking brake)
Operating pressure
372 ± 20 3.8 ± 0.2 54 ± 3 163
△
0
345-804-
22000