If an owner expects his refrigeration devices to carry out dependably for several years, preventive maintenance is a need.When equipment constantly breaks down or does not carry out to expectations, it’s often since there has actually never been any preventive upkeep– just emergency situation service. Bear in mind, devices is just as good as the service performed on it.

All mechanical devices need routine service to keep it in the best operating condition. Good service can mean the difference in between a few mechanical breakdowns or constant issues.

The following is a guide to developing a comprehensive preventive maintenance program.

To correctly preserve a system, all the major components must be consisted of in the maintenance schedule. These include the evaporator(s), compressor system, and condenser.

For this post, just air-cooled condensing systems will certainly be discussed. Systems with water-cooled condensers or towers require particular assessment techniques, however the other parts of those systems can be thought about within the context of this short article.


Check the evaporators monthly for proper defrosting. Ice build-up on the evaporator coil can trigger inefficiencies in the operation of the system, and can be detrimental to the coil surface itself.

Every 6 months:

1. Tighten up all electrical connections in the electrical panel.

Check for worn away wiring insulation and wore away terminals, and make certain all spade connections are tight.

2. Examine all defrost heaters.

Ensure heating systems are in the appropriate position for optimum heat transfer to the evaporator coil. Follow the maker’s suggestions.

  • Inspect each heater for proper amp draw.
  • Examine the voltage at each heater terminal.
  • Ensure the heater terminals are in good condition.

3. Inspect fan motors and blades.

Do the blades turn freely? Check the blades for uncommon wear patterns or anxiety fractures. Clean the surface area of each fan blade. Replace any worn blades and tighten up the fan set screws.On motors with lubrication fittings, use the correct lubricant. Replace any motor that is tough to turn or has worn bearings.

4. Clean the drain pan and look for correct drainage.

All foreign material ought to be gotten rid of from the drain pan. The pan should drain freely.The drain line needs to be free-draining with visible slope far from the evaporator.Examine the drain line heater in applications below freezing.

5. Clean the evaporator coil surface area.

The coil must be washed occasionally to remove dust and other foreign materials that might have been drawn into the fins. Commercial-grade cleaning foam can be used. Follow the label directions of the proper cleaner to clean refrigerant coils.