Trimmer Auto Switch Precautions 2

Be sure to read before handling

Operating Environment

Warning

1. Never use in an atmosphere with explosive gases.

The structure of trimmer auto switches is not designed to prevent explosion. Never use in an atmosphere with an explosive gas since this may cause a serious explosion.

2. Do not use in an area where a magnetic field is generated.

Trimmer auto switches will malfunction or magnets inside cylinders will become demagnetized.

3.Do not use in an environment where the trimmer auto switch will be continually exposed to water.

Although the sensor units of trimmer auto switches satisfy the IEC standard IP67 structure (JIS C0920: watertight construction), do not use trimmer auto switches in applications where continually exposed to water splash or spray. Poor insulation or swelling of the potting resin inside switches may cause malfunction.

(Amplifier part D-RNK and RPK: IP40)

4. Do not use in an environment with oil or chemicals.

Consult SMC if auto switches will be used in an environment with coolant, cleaning solvent, various oils or chemicals. If auto switches are used under these conditions for even a short time, they may be adversely affected by improper insulation, malfunction due to swelling of the potting resin, or hardening of the lead wires.

5. Do not use in an environment with temperature cycles.

Consult SMC if switches are used where there are temperature cycles other than normal temperature changes, as they may be adversely affected.

6.Do not use in an area where surges are generated.

When there are units (solenoid type lifter, high frequency induction furnace, motor, etc.) which generate a large amount of surge in the area around cylinders with trimmer auto switches, this may cause deterioration or damage to the circuit element inside the switch. Take measures against sources of surge generation and take caution to crossed lines.

7. Avoid accumulation of iron powder or close contact with magnetic substances.

When a large amount of ferrous powder such as machining chips or spatter is accumulated, or a magnetic substance is brought into close proximity with an auto switch cylinder, it may cause the auto switch to malfunction due to a loss of the magnetic force inside the cylinder.

8.Take measures against freezing when operating at 5°C or less.
Maintenance

Warning

1.Perform the following maintenance periodical in order to prevent possible danger due unexpected trimmer auto switch malfunctio

1)Secure and tighten switch mounting screws.

If screws become loose or the mounting position dislocated, retighten them after readjusting the mounti position.

2)Confirm that there is no damage to lead wires.

To prevent faulty insulation, replace switches or repair le wires, etc., if damage is discovered.

Other

Warning

1.Consult SMC concerning water resistanc elasticity of lead wires, and usage at weldin sites, etc.