Safety and operating instructions
38 © Construction Tools GmbH | 33905146 01 | 2019-09-05
Original Instructions
6.6.7 Cylinder end positions
n
Avoid operating the hydraulic attachment when the
carrier stick and bucket cylinder is in one of its end
positions.
These end positions have damping facilities; the hy-
draulic cylinder may be damaged by prolonged use
while in its end positions.
n
Reposition the carrier so that you do not have to work
with the cylinder in its end positions.
6.7 Stroke control valve
The Stroke control valve enables you adjust the mode of
operation of the hydraulic breaker to the particular task.
The hydraulic breaker is factory-set to the "AutoStop” =
automatic switch-off and long stroke setting.
Mode of operation: maximum impact energy, normal im-
pact rate
The hydraulic breaker starts only when the working tool
is depressed.
Application:
• solid ground
• breaking very large rocks
• breaking heavy concrete structures
• trenching
• sole construction
• digging foundations in rocks
You can set the Stroke control valve to the “AutoStart”
setting for a short time = easy run and short stroke.
Mode of operation: low impact energy, increased impact
rate
The hydraulic breaker starts even when the working tool
is not depressed.
Application:
• unstable ground
• breaking small rocks
• breaking thin concrete surfaces
• block holing in broken ground or debris
• working in horizontal and/or overhead positions
Switching between AutoStart/AutoStop
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Place the hydraulic breaker on timber support blocks.
WARNING Unexpected movement
Sudden movements of the carrier may cause serious in-
jury.
u Secure the carrier such that it cannot move unex-
pectedly.
u Observe the carrier manufacturer’s instructions.
n
Depressurise the hydraulic system (see chapter De-
pressurising the hydraulic system).
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