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SiBE611027_A
Introduction
iv
1. Introduction
1.1
Safety Cautions
Cautions and
Warnings
Be sure to read the following safety cautions before conducting repair work.
The caution items are classified into “
Warning
” and “
Caution
”. The “
Warning
”
items are especially important since they can lead to death or serious injury if they are not
followed closely. The “
Caution
” items can also lead to serious accidents under some
conditions if they are not followed. Therefore, be sure to observe all the safety caution items
described below.
About the pictograms
This symbol indicates the item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates the prohibited action.
The prohibited item or action is shown in the illustration or near the symbol.
This symbol indicates the action that must be taken, or the instruction.
The instruction is shown in the illustration or near the symbol.
After the repair work is complete, be sure to conduct a trial operation to ensure that the unit
operates normally, and explain the cautions for operating the product to the customer.
1.1.1 Cautions Regarding Safety of Workers
Warning
Be sure to turn off the power breaker before disassembling the unit for repair.
Working on the unit with power supplied may cause an electrical shock.
If it is necessary to supply power to the unit to conduct the repair or inspecting
the circuits, do not touch any electrically charged sections of the unit.
Do not start or stop operation by turning ON/OFF the power breaker.
Turning ON/OFF the power breaker to operate the unit may cause an electrical
shock or fire.
Be sure to wear a safety helmet, gloves, and a safety belt when working at a
high place (more than 2 m). Insufficient safety measures may cause a fall
accident.