1、 Daily inspection and recording

1. Visual inspection
   • Shell integrityCheck the switch housing daily for cracks, deformation, or severe wear to prevent moisture or dust from entering the interior.
   • Connection tightnessConfirm that the wiring terminals are not loose, the cables are not damaged or aged, and avoid poor contact causing signal abnormalities.
   • Indicator light statusObserve whether the power indicator light (usually green) and output signal light (usually red) are on and off normally, and determine whether the switch is powered on and triggered.
2. operation log
   • Record the triggering frequency, response time, and environmental parameters (such as temperature and humidity) of the switch, establish maintenance records, and facilitate the analysis of fault trends.

2、 Cleaning and Anti fouling

1. regular cleaning
   • Cleaning cycleClean once every 1-3 months according to the concentration of environmental dust.
   • Cleaning Method：
     • Use dry compressed air to blow away metal dust and oil stains on the surface of the switch and near the sensing head.
     • Avoid using chemical solvents or highly corrosive cleaning agents to prevent damage to the casing or induction coil.
     • For stubborn stains, a slightly damp soft cloth can be used to wipe them off, and immediately dry them with a dry cloth.
2. Anti pollution measures
   • In environments with severe dust or oil mist, install protective covers or sealing sleeves for switches to reduce the adhesion of pollutants.

3、 Electrical performance maintenance

1. Power supply stability check
   • Regularly measure the supply voltage using a multimeter to ensure it is within the rated voltage range of the switch (e.g. DC24V ± 10%).
   • Check if the power cord is aging or damaged to avoid voltage fluctuations causing switch misoperation or damage.
2. Output signal verification
   • Check the stability of the output signal through PLC or oscilloscope to confirm that there is no jitter or intermittent interruption.
   • Adjust the sensitivity knob (if any) to ensure reliable triggering of the switch within the set distance, avoiding performance degradation caused by out of range use.
3. Load matching
   • Confirm that the output current of the switch (such as ≤ 200mA) matches the load device (such as PLC input module) to avoid overload and burnout.

4、 Environmental adaptability management

1. temperature control
   • Ensure that the operating temperature of the switch is between -25 ℃ and+70 ℃ (refer to the product manual for details), to avoid high temperature causing coil insulation aging or low temperature causing material brittleness.
   • Install heat sinks or forced ventilation devices in high-temperature environments.
2. Humidity and Corrosion Protection
   • When the humidity exceeds 85%, condensation may form inside the switch, causing a short circuit. It can be achieved by installing a dehumidifier or selecting a switch with an IP67 or higher protection level.
   • In corrosive gas environments such as chlorine and hydrogen sulfide, stainless steel casings or anti-corrosion coating products should be selected.
3. Vibration and shock isolation
   • When installing on equipment with strong vibrations, such as punch presses and vibrating screens, use rubber shock pads or spring brackets to reduce the impact of mechanical stress on switches.

5、 Storage and Transportation Standards

1. Long-term storage
   • The storage environment should be dry (relative humidity ≤ 60%), ventilated, and the temperature should be controlled between 0 ℃ and+40 ℃.
   • The switch should be placed vertically to avoid deformation of the sensing head under pressure.
   • Regularly power on (once every 3 months) to prevent internal components from getting damp.
2. transport protection
   • Use original packaging or shockproof foam during transportation to avoid violent vibration or collision.
   • Do not invert or place on the side to prevent the internal coil of the induction head from shifting.