A22LK
8
Safety Precautions
Be sure to read the precautions
for All Pushbutton Switches
in the website at:http://www.ia.omron.com/.
Indication and Meaning for Safe Use
Installation Environment
• Do not use the switch in locations where explosive or flammable
gasses may be present.
• Do not use the switch submerged in oil or water or in locations
continuously subject to splashes of oil or water. Doing so may
result in oil or water entering the switch.
Wiring
• Connect the fuse to the Switch in series to prevent it from short
circuit damage. The value of the breaking current of the fuse must
be increased to cover the rated current by 150 to 200%.
• Always make sure that the power is turned OFF before wiring the
Switch.
Also, do not touch the terminals or other current-carrying ports
while power is being supplied. Electric shock may occur.
• Mount the Switch unit in accordance with the specifications of the
contacts. Use an NC contact for the safety circuit. Check the
safety of operation before use. The device may fail to operate
normally.
• Mount the operation unit in accordance with the operation
specifications. Check the safety of operation before use. The
device may fail to operate normally.
• Be sure to install a protect after the wiring. Do not put the electric
power when protect is opened.
Installation
• Do not drop the Switch. Doing so may prevent the Switch from
functioning to its full capability.
• Make sure the Switch is mounted securely to prevent it from falling
off. Otherwise injury may result.
• Mount the Operation Key so that it will not come into contact with
persons in the area when the door is opened and closed. Injury
may result.
• Do not use a Switch as a stopper. Otherwise, the switch may be
damaged and may not operate properly.
• Be sure to use the supplied Lock Ring. Otherwise, the switch may
rotate and may not operate properly.
Others
• Do not attempt to disassemble or modify the Switch. Doing so may
cause the Switch to malfunction.
• The durability of the Switch is greatly influenced by the switching
conditions. Always test the switch under actual working conditions
before application and use it in a switching circuit for which there
are no problems with performance.
• The user must not maintain or repair equipment incorporating the
Switch. Contact the manufacturer of the equipment for any
maintenance or repairs required.
Indicates an imminently hazardous
situation which, if not avoided, is likely to
result in serious injury or may result in
death. Additionally there may be severe
property damage.
Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury or in property damage.
Precautions
for Safe Use
Supplementary comments on what to do
or avoid doing, to use the product safely.
Precautions
for Correct
Use
Supplementary comments on what to do
or avoid doing, to prevent failure to
operate, or undesirable effect on product
performance.
DANGER
Always verify the operation of the safety functions
before starting the system. Not do so may result that
the safety functions may not be performed as
expected if wiring or settings are incorrect or the
Switch have failed. The controlled system may
continue to operate and possibly resulting in injury or
death.
CAUTION
If the Operation Unit is separated from the Switch Unit,
the equipment will not stop, creating a hazardous
condition.
Secure the lever on the Switch Unit by using the Lock
pin so that the Operation Unit cannot be easily
separated from the Switch Unit.
[When the slide key is used]
The machine may start to operate accidentally and
cause an injury. Do not disable the device by using
the spare door Switch operation key or spare key
while the door is open.
[When the outer-fence Switch or inner-fence
Switch is used]
The machine may start to operate accidentally and
cause an injury. Do not disable the inner-fence
Switch or outer-fence Switch by using the spare
key.
DANGER
CAUTION
Precautions for Safe Use
