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© 2018 Dehaco B.V. • Operation and maintenance manual IBEX Hydraulic breakers G-type – Version 17-08-2018
4. Installation
4.3 Setting the breaker
4.3.1 Set operating pressure
1) Stop the carrier engine.
2) Assemble the high pressure gauge to the high
pressure measuring port. Start the engine.
3) Set the tool of the breaker e.g. on a thick steel
plate or concrete.
4) Calibrate the excavator computer to produce the
correct flow and pressure.
5) Read the average pressure from the high pressure
gauge operating pressure.
6) Operating pressure is preadjusted at the factory
and there should be no reason to adjust it.
7) Stop the carrier and remove the gauge.
8) Tighten the plug of the pressure measuring point.
Relief valve
1) The relief valve is a safety device which is used to
protect the breaker when the pressure rises in the
hydraulic circuit.
2) The operating pressure of the breaker determines
the setting of the relief valve in the pressure line.
3) The relief valve setting should be acceptable as
per the specifications of each model.
We advise that this work is to be undertaken by
a qualified technician from a Dehaco approved
dealership.
Stop valve
Hydraulic breaker
Working pressure
Return line
Relief pressure
Pressure line
Relief valve
Control valve
Oil cooler
Main pump
Return filter
4.3.2 Setting of impact frequency
(from IBEX 1200GS)
To set the frequency (bpm), there is a standard
controller (set screw) installed in the IBEX hydraulic
breakers. As a result, the most efficient way of
breaking can be adjusted, depending on the working
conditions.
◊ This control is located on the right side of the
cylinder.
◊ Use a wrench and tighten the set screw to the end
for a minimum number of beats per minute.
◊ By loosening the screw, frequency will increase.
After setting, tighten the nut properly.
