-6-
No.PS
※※
-OMJ0004-E
●
Product handling
Installation
Do no drop, hit or apply shock to the Pressure switch.
Otherwise it can result in damage to the Pressure switch causing failure or malfunction.
Do not pull lead wires or lift the body with lead wires. (Tensile force 50N or less)
Hold the body when handing.
Otherwise it can result in damage of the Pressure switch causing failure or malfunction.
Follow the specified tightening torque
Excessive tightening torque can break the Pressure switch, bracket, and mounting screws.
Insufficient tightening torque can displace the Pressure switch from the original position or loosen the mounting
screws.
Eliminate any dust left in the piping by air blow before connecting the piping to the Pressure switch.
When using a sealing tape, leave a couple of threads exposed.
Otherwise it can cause damage or malfunction.
Do not insert wires or other foreign matter into the pressure measurement port.
It can damage the pressure sensor causing failure or malfunction.
Connect terminal frame-ground (FG) to the ground when using a switch-mode power supply.
Wiring
Avoid repeatedly bending or stretching the lead wires.
Wiring with repetitive bending stress or tensile stress can cause breakage of the lead wires.
Replace the product when damage to a lead wire is observed.
Wire correctly.
Incorrect wiring can break the Pressure switch depending on a miswired circuit.
Do not perform wiring while the power is on.
Otherwise it can break the circuit inside the Pressure switch causing malfunction.
Do not route wires or cables together with power or high-voltage cable.
Otherwise the wires to the Pressure switch can be contaminated with noise or induced surge voltage from the
power or high-voltage line causing malfunction.
Lay the wires to the Pressure switch to a wire duct or in a protective tube other than those for the power or
high-voltage cables.
Confirm proper insulation of wiring.
Poor insulation (interference with other circuit, poor insulation between terminals, etc.) can introduce over
voltage
or current to the Pressure switch causing damage.
Keep wiring as short as possible to prevent contamination from noise and induced surge voltage.
Do not use a cable longer than 30 m. Consult with SMC for the use with a cable longer than 30 m.
Connect 0 VDC wire (blue line) directly or as close as possible to 0 VDC terminal of the DC power supply.
Environment
Do not use the Pressure switch in environment containing corrosive gas, chemicals, sea water, water or
vapor, or in a place where there is a possibility of adhesion of those substances to the Pressure switch.
It can cause failure or malfunction.
Avoid exposure of the Pressure switch to direct sunlight.
Use sunshade if the Pressure switch is exposed to direct sunlight.
Otherwise it can cause failure or malfunction.
Do not use in a place where water, oil or chemicals splashes.
Otherwise it can cause failure or malfunction.
Do not use the Pressure switch nearby a place where electric surges are generated.
Internal circuit elements of the Pressure switch can deteriorate or break when equipment generating a large surge
(electromagnetic lifter, high frequency induction furnace, motor, etc.) is located near the Pressure switch. Provide
surge preventives, and avoid interference.
Do not use a load which generates surge voltage.
Relays or solenoid values generate electric surge voltage. When using the Pressure switch to drive these loads
directly, provide a surge absorber.
