Yokota YED-90, Manual

Page: 32 / 54

-30-
● Be prepared for reaction force
Be prepared for reaction force by holding the tool securely
since there is a chance that an operator might be pushed
around by the reaction force.
● Be careful with the operation of a tool at no load.
When running the tool at no load, be sure that the tip tool
was removed without fail and be careful about the
surroundings. The operation at no load for a long time will
be the reason for the part breakdown with seizure, early
wear and so on.
● Be careful of burn injury.
Make sure not to touch attachments carelessly because
attachments, bolts and nuts might have been heated up
after operation.
● Do not give the impact externally.
Be careful since the electronic parts are used in the follow-
ing units: Cover plate, Electric buzzer, Connector of the
connecting cable, Inside of hammer case.
● Check the torque periodically by the torque wrench
after tightening the bolt, nut etc.
About the controller
● Be careful against the chemicals and water.
Especially the intrusion of water to the inside of the control-
ler may cause the short circuit.
● Do not put more load than specified to the relay
output terminals.
● Install the proper surge killer near the load in parallel
in case that the controller malfunctions owing to the
surge(noise) during the usage of the output terminals.
● In case that the controller has the built-in battery,
exchange it periodically.
WARNING