SM-131-006.pdf - 第35页
Safe-30 Safety Precautions z They should put on safety shoes. It is advisable that they should wear safety shoes to avoid injuries that may be caused while they are handling a heavy stuf f such as a motor . It may someti…
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Safety Precautions
5. Safety and Health Standard
z Enclosing the machine area with a barricade tape, etc., for maintenance.
During maintenance, enclose the machine area with a barricade tape, etc., to prevent
any third party from operating the machine.
Put the caution label "DO NOT OPERATE" on the machine where people can easily
notice to prevent any third party from operating the machine. Otherwise, a third party
may turn on the power switch of the machine during the maintenance work and the
machine will start running abruptly, causing an electric shock or an injury.
z The service personnel should wear specified work uniforms not only urge them
to realize that they are in charge of an important service but also to make it easily
noticeable that they are sent off on servicing work by Hitachi High-Technologies.
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Safety Precautions
z They should put on safety shoes.
It is advisable that they should wear safety shoes to avoid injuries that may be caused
while they are handling a heavy stuff such as a motor.
It may sometimes be recommended that service personnel should wear the customer
specified pairs of shoes.
z When more than one person should be engaged in servicing, a leader should
be selected in advance. The others should follow the leader's instructions.
A group of people in charge of servicing work should clearly understand the
assignments to avoid any misjudgment or mistaken actions.
For safety purposes, it is really essential to select a leader who will decide what or
how to do next and give proper assignments to the others.
z Be sure to turn off the power unless necessary.
"Power ON" means that the machine can be activated at any time.
As long as the machine has some defects, it must be assumed that the machine will
work in an unexpected condition.
It is strongly advisable that the power should always be kept off unless necessary.
z When the machine should be powered, be sure to confirm the location of the
[EMERGENCY STOP] switches and the [POWER] switch beforehand to be
ready for emergencies.
The past reported cases indicate that most of the accidents must have been avoided by
pressing an [EMERGENCY STOP] switch.
Unfortunately some accidents were not avoided because any one of the
[EMERGENCY STOP] switches was not pushed.
When a hazardous element is perceived, an [EMERGENCY STOP] switch must be
pushed immediately, giving no time to visually confirm the location of the button.
An accident will occur so suddenly that no one can think of even pressing an
[EMERGENCY STOP] switch.
Whenever you or someone else enters a hazardous area, one of you must put your
hand on an [EMERGENCY STOP] switch and get ready for pressing it at an
emergency before the other one starts any assigned job.
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Safety Precautions
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z Be sure to select the rear one and lock it, making it unavailable to perform
any operations on the front operation panel.
If someone else can easily switch over to his or her desired panel, it is very dangerous
because he or she can operate the machine any time even though you are not ready for
it.
Be sure to lock the operation panel to avoid any major injuries.
z When more than one person are working, ensure good communication by
giving loud verbal instructions for safety purposes.
When several people are engaged in maintenance work, all of them cannot keep the
same observation (observer's eye) and the same way of thinking.
Whenever a person activates the machine, he or she should give a clear signal such as
"Power ON" to the others and the others should give a clear response such as "OK" to
the operator. No confirmation will result in a major injury.
It is important to have good timing between verbal instructions and responses, paying
attention to the intervals. People working should not get too much accustomed to this
signal exchange and no one should operate the machine without the best timing for
each other.
It will be most regrettable if an accident is caused by wrong operations.
z Before work, it is advisable to discuss whether or not it is surely required to
enter a moving area of the machine for repair work.
It is, of course, better to keep away from any moving area of the machine as long as
some other ways (even if a way might be somewhat troublesome) are possible for
repair.
Remember "Consideration leads to safe and efficient results!".
z Be sure to check the pattern program data for a test run by actually making
the machine perform a series of actions (from "Start" to "Stop"). After the good
performance is confirmed, proceed to your work in the safe range.
The machine works in various ways, depending on the executed pattern program and
the results of detection in execution.
It is required to carefully confirm that the [PAUSE] button works correctly and the
pattern program data for a test run does not have any deficiencies in addition to the
confirmation to a series of actions based on the pattern program data for a test run.
It should also be understood that safety is accredited only with the results, not with
the confirmation.
If you don't have a confidence, do not hesitate to ask another one repeatedly if the
steps (procedure) selected by you is correct or not.