Generator Maintenance and Repair: What Is Covered
Facility First manages generator maintenance and repair at every location in a program, including the work below, with the same request, approval and record for each job.
- Preventive maintenance
- Load bank testing
- Fuel system service
- Transfer switch service
- Emergency repair
- Rental generator coordination
Commercial Generator Repair
Repair requests are submitted through the platform or by phone, triaged for priority and dispatched to a vetted generator provider in the location’s market. Common requests include:
- Generator fails to start. A weak starting battery, a failed charger, low fuel or a controller left out of automatic mode are common reasons a unit does not start when power drops. The provider checks the batteries, charger, fuel and controller alarms and runs the unit to confirm the repair.
- Transfer switch faults. The automatic transfer switch moves the building to the generator and back again, and a switch that fails to transfer, or stays on generator power after utility power returns, leaves the site without power or running the generator longer than needed. The provider tests the switch operation, timers and contacts.
- Shutdowns under load. A generator that starts but shuts down once the building load transfers often has a fuel, cooling or overload problem. The provider reviews the controller alarm history and checks fuel delivery, coolant and the connected load.
- Fuel problems. Diesel stored for long periods can collect water and sludge, and clogged filters starve the engine during a long run. The provider samples the fuel, replaces filters and recommends fuel polishing or tank cleaning where needed.
- Leaks. Oil, coolant or fuel under the unit is a fire and environmental concern and can lead to engine damage. The provider finds the source, cleans up within the enclosure and repairs the hoses, gaskets or fittings.
- UPS alarms. A UPS on battery, on bypass or reporting a battery fault can no longer carry registers, servers or security systems through a short outage. The provider tests the unit and its batteries and replaces batteries at end of life.
Every job is closed out with photos and notes, so the repair history for each location is kept in one place.
Preventive Maintenance Schedule for Generators and Backup Power
Generator and Backup Power work runs both on a schedule and on demand. Planned work (sometimes called preventative maintenance, or planned preventive maintenance outside the U.S.) keeps small problems from becoming closures. Backup power is only tested for real during an outage, so regular inspection and run tests are the way a commercial site confirms that a generator will start, transfer and carry the load, and they produce the records the fire code official and insurer ask for. Where a generator serves a required emergency system, NFPA 110 sets the requirements for emergency and standby power systems and the authority having jurisdiction decides how it applies; the program defaults below are a starting point adjusted to the equipment and the site.
| Task | Recommended frequency | Basis |
|---|---|---|
| Visual inspection of the generator: fuel level, oil, coolant, battery, leaks, alarms and controls left in automatic | Weekly | Manufacturer instructionsInterval: Facility First default |
| Run test under load, with the automatic transfer switch operated | Monthly | Manufacturer instructionsInterval: Facility First default |
| Starting battery test, terminal cleaning and charger check | Monthly | Manufacturer instructionsInterval: Facility First default |
| Service of oil, filters, belts, hoses and coolant | Annuallyor sooner by run hours | Manufacturer instructions |
| Load bank test | Annually where monthly runs carry a light loador where the jurisdiction, insurer or manufacturer requires it | Facility First default |
| Diesel fuel quality test and tank inspection | Annually | Facility First default |
| UPS inspection, battery test and alarm check | Quarterly | Manufacturer instructionsInterval: Facility First default |
| Functional test of battery-powered emergency and exit lights, at least 30 seconds | Monthly | NFPA 101 (2012 edition), Section 7.9.3.1.1, as summarized by the Minnesota Department of Health; Kansas State Fire Marshal |
| Functional test of battery-powered emergency and exit lights, at least 90 minutes, where NFPA 101 applies (some adopted fire codes set a shorter annual test) | Annually | NFPA 101 (2012 edition), Section 7.9.3.1.1, as summarized by the Minnesota Department of Health; Kansas State Fire Marshal |
| Record run hours, test results and open deficiencies for each unit | At every visit | Facility First default |
Facility First default is the starting interval in each program, adjusted for each site.
The authority having jurisdiction, the manufacturer and the property’s insurer can require more frequent service, and each location’s schedule is set in its program and recorded on every visit.
Urgent Generator Requests
Urgent requests are flagged at intake and dispatched first. Where a failure leaves a location unsecured, McCray can post an officer until the work is complete. Facility First does not publish response-time guarantees; dispatch priorities are agreed in each client’s program.
Generator calls are ranked by what the location loses if the unit does not run: refrigeration, life safety systems, security and point of sale. During an extended outage, a rental generator can be coordinated while the site’s unit is repaired, and refueling can be arranged for long runs. Requests typically treated as urgent include:
- A utility outage with the generator not running or not carrying the load
- A generator that failed its run test and cannot be returned to automatic
- A fuel or coolant leak at the unit
- A UPS on battery or bypass with critical systems connected
- Low fuel during an extended outage
Load Bank Testing
Load bank testing runs a generator under a controlled load to confirm it can carry the site when it is needed. Testing is scheduled where the equipment, the site or local rules call for it. Many monthly run tests carry only the building’s normal load, which at some retail and office sites is a small part of the generator’s rating. A diesel engine run lightly for long periods can build up unburned fuel and carbon in the exhaust, often called wet stacking, and a load bank test helps clear it and shows whether the unit can carry its rated load.
The provider brings a portable load bank, connects it at the generator and steps the load up over a set period while recording voltage, frequency, temperatures and pressures. Testing is usually scheduled outside trading hours, and the location is told in advance that the generator will run for the length of the test. Results go into the unit’s record.
How Generator Requests Are Handled
- Request. Submitted through the platform or by phone, with photos where available.
- Triage. Facility First confirms the scope, priority and any warranty.
- Dispatch. A vetted provider for this trade in the location’s market receives the work order.
- Completion. The provider checks in, documents the work with photos and closes out.
- Verification and invoice. The work is checked against the request and invoiced in one format.
What Affects the Cost of Generator Work
- Generator size and fuel type. Larger units and diesel, natural gas or propane engines each have their own service parts, fluids and procedures.
- Test scope. A monthly run test, an annual service and a full load bank test each take different time and equipment.
- Transfer switches and UPS units. Each transfer switch and UPS on the program adds testing time and parts.
- Location of the unit. Rooftop, basement and enclosed units can take longer to service and to reach with a load bank or fuel truck.
- Fuel. Refueling, fuel testing and fuel polishing are separate from labor and parts.
- Rental equipment. A temporary generator during repairs adds delivery, hookup and rental time.
Approval limits set by the client decide what proceeds automatically and what is quoted first.
Generator and Backup Power for Restaurants, Retail and Offices
Backup power work is planned around what each location needs to keep running when utility power fails.
- Restaurant Facility Maintenance. Walk-in coolers and freezers hold stock that can be lost in a long outage, so the generator’s connected load and fuel supply are confirmed before storm season.
- Retail Facility Maintenance. Backup power keeps lighting, registers, security systems and refrigerated cases running, so a failed run test is corrected before the next outage.
- Jewelry and Watch Retail. Alarm, camera and access control systems need power through an outage, so the UPS and generator serving them are tested on schedule.
- Corporate Offices. Server rooms, elevators and emergency lighting can depend on the generator and UPS, so tests are scheduled outside working hours.
One Standard in Every Market
Facility First manages generator work the same way in New York, London, Dubai or Sydney. Outside the United States, the same work is often searched for as standby power maintenance or UPS servicing. Each market is served by vetted local providers who hold the licenses and insurance the work requires, and every location follows the same request process, approval limits and reporting.
Why Multi-Site Businesses Use Facility First for Generator Work
- One request process for every location
- Vetted providers with the licenses and insurance the work requires
- Photos and notes on every job
- Approval limits set by the client
- One invoice format across markets
- Security through McCray when a site needs protection during or after the work
For Generator Providers
Licensed and insured generator providers can apply to join the Facility First network for commercial work at multi-site retail and corporate locations. Apply to join the network
Frequently Asked Questions
Can Generator Testing Be Scheduled?
Yes. Testing and maintenance can be scheduled on a recurring basis, with results recorded for each unit.
How Often Should Backup Generators Be Tested?
Testing schedules depend on the equipment, the site and local rules. The schedule is set for each location and recorded.
Can UPS Systems Be Included?
Yes. UPS batteries and units can be serviced under the same program.
Does Facility First Manage Generator Work Outside the United States?
Yes. Facility First runs generator work as a managed service in the same markets McCray serves worldwide, through vetted local providers, with the same request, approval and reporting process at every location.
How Is Generator Work Priced?
Pricing depends on the scope, the location, the time of day and the materials required. Routine work proceeds within the approval limits set for the program, and anything above a limit is quoted for approval before it starts.
Can Generator Work Be Combined with Other Trades Under One Program?
Yes. Most clients put every trade under one program, with one request process, one invoice format and one record for each location.
How Often Should Generator and Backup Power Maintenance Be Scheduled at a Commercial Site?
Facility First programs start with a weekly visual inspection, a monthly run test under load with the transfer switch operated, and annual service by run hours or the manufacturer’s schedule. Where NFPA 101 applies, battery-powered emergency lights are tested for 30 seconds monthly and 90 minutes annually, and NFPA 110, the local fire code official or the insurer can require more.
Can a Rental Generator Be Arranged During Repairs?
Yes. Where the site’s generator will be out of service for some time, a rental unit can be coordinated through the program, including delivery, hookup and fuel.
What Does a Generator Need After a Long Outage?
After a long run, the provider checks fuel, oil and coolant levels, looks for leaks and alarms, and confirms the unit is back in automatic mode. The tank is refilled so the generator is ready for the next outage.