Maintenance And Preventive Maintenance

At Hodge International, our actions continue to be guided by the one principle that has served us well over the years – a desire to provide our customers with the highest quality products engineered to meet the most demanding applications. In addition to the renowned Hodge quick-opening doors, our product line consists of systems that include autoclaves, vacuum chambers, sterilizers, and other pressure vessels for such industries as food, rubber, plastics, aerospace, health care, electronics, concrete, defense, wood treating, sintering furnaces, and crystal growing.


Guide for Preventive Maintenance

Preparation for Preventive Maintenance

  • Check Electrical Connections
  • Inspect printout for signs of trouble
  • Install test equipment
  • When necessary, shut off building services and drain all lines.


Door Assembly

  • Inspect door for easy operation
  • Check condiation of door gasket for wear and tear and replace as necessary
  • Verify proper door alignment
  • Grease hinge, door lock, wedges, and back surface of sliding ring
  • Inspect door lock mechanism for wear


Unit Piping

  • Inspect input strainer for debris
  • Clean strainers as necessary
  • Inspect steam trap for proper operation
  • Rebuild steam trap
  • Inspect each gauge for accuracy
  • Calibrate or replace gauge if required
  • Make internal inspection of each check valve
  • Replace or rebuild check valve if necessary
  • Check safety valve for proper operation
  • Check each solenoid and ball valve for proper operation
  • Rebuild each solenoid and ball valve
  • Inspect chamber drain strainer for debris
  • Flush chamber and drain line


Lift Table

  • Check valve for sticking
  • If motor growls, pump is pickup up air. Check suction line for loose fittings
  • Check level of oil in resevoir
  • Check for bounces or vibrations of platform and bleed
  • Check fittings, pistons and ram
  • Check for obstructions under lift table



  • Check gear box oil
  • Check piping for leaks
  • Check oil levels


Control System

– Solid state electronic device. No Maintenance Required.


Hydraulic Power Units

  • Verify correct operation of system
  • Check piping for leaks
  • Check oil level
  • Change oil
  • Check pump output, adjust as necessary
  • Verify system enable/disable switch works
  • Inspect door lock cylinders, rebuild as required