When electrical issues occur in HVAC and controls, the problem can often be traced to loose, over-tightened, or corroded connections. It is important to resolve electrical problems promptly to avoid negative effects that can range from mere annoyance, to costly equipment failure and downtime, to catastrophic fire.
All electrical connections begin to deteriorate at installation, and they can be further compromised by factors like vibration, fatigue, environmental conditions, or faulty installation. Re-tightening terminals is often prescribed as a preventative measure, but in doing so it is important to avoid excessive contact pressure, which can create or compound problems.
Faulty connections can sometimes be identified by visual inspection, but not all can be seen by the naked eye. One of the most effective methods of diagnosis is thermal imaging, in which specialized infrared equipment is used to identify overheated connections when subjected to a specific measure of load. Thermal imaging should be performed periodically to identify hot spots on electrical panels, drives, disconnects, controls, and other high-load connections as part of a maintenance program. Baseline images should be established to identify connection problems that develop over time.
PJM utilizes thermal imaging as a diagnostic tool and as part of a preventative maintenance program. For more information, contact us at 609-921-1394.
PJM Mechanical Contractors, Inc. is a multi-faceted mechanical contractor providing construction and installation, service and maintenance, and design/build services in a comprehensive range of mechanical disciplines that include HVAC, plumbing, controls, refrigeration, custom metal fabrication, piping, fire protection, and backflow preventer testing. PJM primarily serves clients in pharmaceuticals, manufacturing, healthcare, institutional, and other various commercial and industrial sectors.