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Safety Precautions for All H3CR Models
Note: The undermentioned is common for all H3CR models.
Warning Indications
Caution
Precautions for
Safe Use
Precautions for
Correct Use
Meaning of Product Safety Symbols
Used to warn of the risk of electric shock under
specific conditions.
Used for general prohibitions precautions for which
there is no specified symbol.
Use to indicate prohibitions when there is a risk of
minor injury from electrical shock or other source if
the product is disassembled.
Used for general mandatory action precautions for
which there is no specified symbol.
Risk of fire and explosion due to arcing and relay heat
generation that accompanies switching. Do not use in an
environment where flammable or explosive gas is present.
The H3CR series uses a transformer-less power
supply. Exercise full caution as there is a risk of
electrical shock if input terminal is touched when
power voltage is applied.
The service life of the output relay varies widely
depending on switching capacity and switching
conditions. Use only within the rated load and
electrical life count, based on actual conditions of use.
Risk of contact sticking and burning if used past the
service life. Always use a load current that does not
exceed the rating, and if a heater is used, use a thermal switch in the
load circuit.
Do not remove the outer casing.
56
Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury or in property damage.
Supplementary comments on what to do
or avoid doing, to use the product safely.
Supplementary comments on what to do
or avoid doing, to prevent failure to
operate, malfunction or undesirable effect
on product performance.
CAUTION
In rare circumstances there is a risk of slight electrical
shock, fire, or device damage. Do not disassemble,
modify, repair, or otherwise touch the inside.
In rare circumstances there is a risk of fire if the
screws become loose. Tighten the terminal screws to
·
the specified torque (1.08N
m).
■ Precautions for Safe Use
Do not use the Timer in the following locations.
• Locations with radical temperature changes.
• Locations with high humidity that may result in condensation.
• Locations with excessive vibration or shock.
• Locations with corrosive gas or dust.
• Locations where the Timer is exposed to sprayed water, oil, or
chemicals.
Pay the utmost attention not to make mistakes in polarity when wiring
the Timer.
Do not connect anything to terminals that are not used.
Risk of internal element damage if a voltage that exceeds the rating
is applied.
Using a surge absorber is recommended if surge voltages occur.
The H3CR Series uses a transformerless power supply. Do not touch
the input terminals while the supply voltage is applied, otherwise an
electric shock may be received.
Verify that the power and output LEDs (LCD) are operating normally.
In some usage environments, the LEDs/LCD/ resin components may
deteriorate faster than normal, resulting in display failure. Inspect and
replace regularly.
When disposing of this product, follow the procedures for disposal of
industrial waste that apply in your region.
Verify that the product is the desired product before use.
Exercise caution as the outer casing of the timer may be immersed in
organic solvents (thinner, benzene, etc.), strong alkali, or strong
acids.
■ Precautions for Correct Use
Changing the Setting
Do not change the time unit, time range, or operation mode while the
Timer is in operation, otherwise the Timer may malfunction.
The time unit and time range can be set with the respective selectors
turned clockwise or counterclockwise.
The selectors are of notched so that they will snap when they are
properly set. Do not set the selectors midway between notches,
otherwise the Timer may break or malfunction.
Do not use H3CR-A models (except for H3CR-A@S) in flicker mode
at the lowest selector setting, or H3CR-F models at the lowest
selector setting. Doing so may result in damage to contacts.
H3CR
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