General Repair and Calibration guidelines for BW Technologies / Honeywell Analytics instruments

General Repair Guidelines

• Prior to returning a monitor to customer always
  • Calibrate
  • Bump and check for stability
• By rules of intrinsic safety
  • NO SOLDERING permitted
• Sensor Warranties
  • NH₃, ETO, ClO₂, Cl₂,O₃, sensors carry 1 year warranty
  • 3 year Clip Extremes have a 3 year warranty
  • All others are 2 year
• Corroded monitors are not covered by warranty
  • Not to be repaired
  • Owner must buy new replacement

Universal Repair Tips

• If monitor display is missing segments
  • Clean zebra strips
• Replace sensor if
  • Sensor shows fail
  • Fails to bump and calibrate
  • Values constantly float up and down
• If unit has erratic toxic sensor
  • Try airing out over a weekend and then recalibrating
  • Often fixes poisoned sensors
• When reassembling a monitor
  • Always turn counter clockwise until a click is felt then tighten
  • If monitor has more than three stripped screws replace case
• 180 days is default calibration interval for GasAlert Family

Factors Affecting Battery Life

• Amount of time unit is in alarm
• How often backlight is used
• Operating Temperature
  • Colder temperatures significantly shorten battery life
• Age of rechargeable battery
• Initial charge/discharge cycle
  • Rechargeable batteries should be fully discharged then fully charged again 3 times to ensure maximum life

Monitor Cleaning