Full Diagnostic Inspections & General Repair

NFPA 110 calls for a weekly inspection, a monthly exercise run of at least 30 continuous minutes at 30% or more of nameplate kW (or the manufacturer’s minimum exhaust gas temperature), monthly operation of each transfer switch, annual fuel quality testing, and, for Level 1 systems, a 4-hour run at least once every 36 months. The edition that applies is the one adopted by your local authority having jurisdiction, so confirm it with your AHJ.

A standard visit covers fluid checks (oil, coolant, fuel), filter inspections and replacements, battery testing, visual inspection for leaks or wear, control panel inspection, and system performance verification. Every visit ends with a written record of what was found and what was done.

NFPA 110 requires a written maintenance and testing schedule plus a permanent record kept on site and available to the authority having jurisdiction. Each entry should show the date, the technician, any unsatisfactory condition and the corrective action taken, parts replaced, and the results of testing after a repair. For exercise runs, the record should also capture engine hours, transfer times, voltage and amperage by phase, frequency, pressures, and temperatures. Hedgehog Power Systems delivers a written report after every visit that covers these fields.