Heating Ventilating and Air Conditioning

Example Specification of Services

• Preventative Maintenance (“PM”) will be provided quarterly on all of your units.
• Contractor will perform PM work in accordance with the manufacturers’ specifications.
• PM work may include:
  • Check operating head pressure, suction pressure and superheat.
  • Check condenser for coil blockage.
  • Clean out condenser coil with coil cleaner.
  • Clean out evaporator coil with coil cleaner.
  • Check compressor starting and running amps.
  • Ensure starting devices switching properly.
  • Inspect accessible areas for signs of leaks and rust.
  • Ensure refrigeration charge is correct.
  • Check High and Low pressure safety controls.
  • Oil condenser fan motor, ensure that outdoor fan blade is free of vibration and not bent, check running amps for overheating.
  • Ensure that all installed time delays function properly.
  • Inspect compressor terminal wiring. Ensure no signs of burning, overheating, brittle insulation or pinching. Inspect start and run capacitors for signs of aging and deterioration.
  • Clean all contactors and motor starter electrical contacts
  • Wipe down inside of blower section.
  • Wipe down condenser area.
  • Replace air filters.
  • Oil blower motor (needed and oilable).
  • Check blower motor V-belts tension and replace belts as needed
  • Check indoor thermostat for proper operation.
  • Check for visible signs of poor electrical connections.
  • Check blower wheel for dirt and balance.
  • Cycle fan relay and check for proper operation.
  • Check gas valve for proper operation.
  • Check and cycle fan safety and upper limit switch.
  • Check flame safety limits and safety controls.
  • Check control transformers output voltage and FLA.
  • Check blower motor bearings and shaft.
  • Check blower motor run capacitor.
  • Check blower motor amp draw.
  • Check main burners for proper ignition and burning flame.
  • Cycle and check out electronic ignition controls.
  • Cycle and cheek combustion air/induced draft blower.
  • Check for proper operation of draft inducers.
  • Check thermocouple for proper operation.
  • Check pilot flame for proper burning flame.