SmartROC D65 Tier 4 Final 12 Compressor and air system
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12.3.9 Checking the pressure sensor B456
Pressure tank's top side
A Valve plate
B Pressure sensor B456
Check that the tank pressure shown on the display corresponds with the tank pressure
shown on the pressure gauge at the regulators. The difference must be no greater than 0.1
bar.
12.3.10 Checking the start protection
If tank pressure exceeds 1.5 bar then the engine cannot be started.
1.
Switch off the engine without unloading the compressor.
2.
Try to start the engine again immediately while the pressure exceeds 1.5 bar. The en-
gine cannot be started.
12.3.11 Checking the minimum charge pressure
If tank pressure is less than 4 bar then the compressor cannot be loaded.
1.
Set the drill rig in Tramming position with button (5) on the left-hand operator's panel.
2.
Set engine speed to 1500 rpm.
3.
Load the compressor with button (5) on the right-hand operator's panel.
4.
Check that the compressor does not load until the tank pressure reaches 4 bar.
12.4 Control system
12.4.1 System description
The control system consists of:
n Control valve for low percussion pressure
n Control valve for high percussion pressure
n Loading valve (solenoid valve) Y210A