operating system and without it they will be paying for energy that is not doing anything useful.
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in more effective treatment of the air and lower operating costs. Stress that good airflow is the key to a properly
• Inspection and, if necessary, cleaning of both the evaporator and condenser
coils. Doing so will result in better movement of heat from the inside to outside and less cost to do so. It will also keep the compressor operating cooler which extends motor life
and greatly reduce the chance of the refrigerant damaging the compressor. • Checking the electrical quality. Measuring the voltage, current and power factor values will make sure the electrical motors in the system are not using more power and operating hotter than necessary. This is very important in the summer months when the load on the utilities is high and voltage can suffer. Customers will also be able to relate to this as it gets good press coverage. Power factor can be explained as essentially gas mileage as it relates to how efficiently the system uses the electricity that is supplied to it. Poor power factor means that the system cannot use all the energy that is supplied to it (and is being paid for) and what is not used is wasted as heat. • General inspection and maintenance of the system components and surrounding area. This covers the usual stuff from fan belts to electrical connections. Stress that things like these can result in failure down the road if they are not corrected. Point out that electrical connections need to be tight to avoid overheating or interrupting the power. Vibrations or slipping belts are not only a noise nuisance but also cause other components to fail prematurely.
SUMMARY The benefits of a PM program for the customer is the peace of mind that their system is inspected and maintained on a regular basis without the worry of what steps are required and when to keep their system healthy and working properly. Any issues that occur are likely to be caught early and corrected before they can become major problems and result in a large expenditure to correct. For the contractor, maintaining an ongoing relationship and communication with quality customers will result in greater revenue opportunities and lower effort required in bringing in additional business. Good service also results in good recommendations in both social media as well as traditional word of mouth. u
Jamie Kitchen is an account manager for Danfoss. He previously was the training manager for Danfoss in North America. For additional information, visit danfoss.us.
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HVACR BUSINESS AUGUST 2021
www.hvacrbusiness.com
