4
4
2. Wiring precautions
Warning
Turn the power supply to the instrument OFF before wiring or checking.
Working or touching the terminal with the power switched ON may result in an
Electric Shock which could cause severe injury or death.
The instrument must be grounded before the power supply to the instrument
is turned on.
Caution
• Do not put wire chips into the instrument, because they could cause fire, malfunction or trouble.
• For the DC power source wiring, do not confuse the polarity as described in this instruction
manual.
• For the CMT-240-K ground terminal, use a wire whose thickness is 2mm
2
or greater.
However, avoid grounding in conjunction with the power line.
• Use the solderless terminal with an insulation sleeve that fits to the M3 screw when wiring the
CMT-240-K terminals.
• Tighten the terminal screw with the specified torque.
If excessive force is applied to the screw when tightening, the screw or case may be damaged.
• The protective device should be used in environmental conditions which may cause damage
to the device or contribute to the deterioration of its parts.
3. Running and maintenance precautions
Warning
• Do not touch live terminals. This may cause electric shock or problems in operation.
• Turn the power off before cleaning the module or retightening the screws.
Doing this work while the power is on may result in an electric shock which could cause
severe injury or death.
