RAMMER 255E, Operator'S Manual

Page: 24 / 68

COPYRIGHT © 2020 SANDVIK MINING AND CONSTRUCTION OY Page 24 - Operation
Operation 255E
5. OPERATION
5.1 OPERATING INSTRUCTIONS
RECOMMENDED USE
The hammer is designed to be used in breaking concrete, road surface or asphalt,
hard or frozen ground. It is also suitable for light trenching and benching
applications or in ground compacting. It can be also used in breaking small and soft
boulders. Your local dealer will gladly give you more information.
OPERATING CONDITIONS
Principle of installation
Almost all carriers meeting mechanical and hydraulic requirements can be used to
operate the attachment. See “Hammer specifications” on page 60. The product is
installed on the carrier much in the same manner as installing a bucket or other
attachments. A flange mounted attachment requires a separate mounting bracket.
If the carrier has already auxiliary hydraulic circuit, the installation requires only
suitable hoses and fittings. If the carrier does not have suitable kit to run the
attachment, one must be built. This may require installation including new piping
and additional valves such as directional valve and pressure relief valve.
Suitable kits can be ordered from the local dealers, from carrier manufacturers and
their dealers or from third party suppliers.
Hydraulic oil
In general the hydraulic oil originally intended for the carrier can be used with this
product. See “Requirements for hydraulic oil” on page 41.
Operating temperature
The operating temperature is -20 °C (-4 °F) to 80 °C (176 °F). If the temperature is
lower than -20 °C (-4 °F), the hammer and tool have to be preheated before any
operations can begin, in order to avoid breaking the accumulator's membrane and
the tool. During operation they will remain warm.
Note: The temperature of the hydraulic oil must be monitored. Ensure that oil grade
and monitored oil temperature together guarantee correct oil viscosity. See “Oil
specifications” on page 42.