HVAC systems are usually one of the largest sources of energy use within a facility. They also might also be the source of the most problematic failures in any facility. Among the most common failures of HVAC systems are tripped high-pressure limit switches, low refrigerant levels, and an overheated compressor due to a faulty return fan. The key components technicians must inspect to detect potential problems include:
Ductwork and seals. Infrared technology can help pinpoint the location of thermal escape related to these components.
Fans and blowers. The misalignment of these components will manifest itself in overheated bearings and couplings.
Electrical connections. A loose or corroded connection increases resistance at the connection, which results in overheating.
Electric motors use a significant amount of energy in facilities. Overheating and malfunctioning motors and generators tend to indicate mechanical or electrical inefficiencies that can lead to even more energy use and, ultimately, failure.
A robust preventive maintenance program supported by using predictive maintenance technology goes a long way in averting these costs and failures. Technicians should regularly check these components:
Airflow. A restricted airflow causes overheating, which manifests itself throughout the entire motor housing.
Bearings. Thermal imaging is useful in identifying bearing failures well before they become major problems.
Insulation. Technicians should look for higher-than-normal housing temperatures in areas associated with windings.
Electrical connections. As with electrical connections in HVAC systems, technicians should look for loose or corroded connections that increase resistance.
Low-Hanging Fruit: Energy Savings Made Easy
HVAC Systems, Electric Motors Consume Large Amounts of Energy
