Regulators, insurers, and facility auditors increasingly ask for measured values during supervised tests rather than checkbox attendance.
Garrett Mechanical load testing aligns with electrical service contracts and exercise guidance in generator exercise logs.
Loaded test versus no-load exercise
No-load crank proves start. Loaded test proves voltage and frequency under transfer with HVAC, elevators, or other designated branches online.
Skipping loaded steps may satisfy a calendar invite while leaving transfer contact pitting undiscovered until outage.
Frequency drift logged over minutes may predict governor service needs before hard failure.
Minimum fields on a useful log
Date, runtime duration, ambient temperature, fuel level or pressure note, battery voltage, utility disconnect time, transfer close time, and steady-state voltage on each step should appear on every entry.
Technicians should note abnormal sounds, vibration, exhaust color, and any alarm codes that self-cleared.
Oil samples may be required on larger diesel sets; note if analysis was due the same visit.
Measured load versus nameplate
Ammeter readings on each step compared to generator rating show headroom. Well pumps and RTUs that spike above steady reading belong beside peak numbers, not only averages.
Trending year over year reveals brush wear, fuel system drift, or added building load since original sizing.
Building automation snapshots during test help reproduce alarm states for the control vendor.
Corrective actions tied to findings
Logs without work orders for failed items recreate the same failure next season. Each red line should map to a part, adjustment, or explicit owner acceptance of risk.
Link corrective tickets to preventive maintenance when HVAC steps fail during generator tests.
Critical refrigeration on standby should appear explicitly in the test script, not assumed.
Who keeps the canonical record
Binder, CMMS, and controller onboard history may disagree. Designate one system as authoritative and copy summaries to the others after each annual test.
Multi-site portfolios should use consistent field names across properties.
Electronic signatures on PDF logs satisfy some auditors better than scanned pencil cards.
Witnessing and third-party review
Some occupancies require witnessed tests. Witness signatures, license numbers, and scope of what was observed should be stored with the log scan.
We provide readable summaries for property managers who do not parse controller jargon.
Failed loaded test without owner sign-off on risk acceptance should not close the work order.
Schedule the annual loaded test
Plan before hurricane season peaks when generator queues are long. Confirm fuel delivery after tests that burn significant volume.
Contact (904) 822-3339 or contact to book supervised load testing with documented closeout.
Compare this year log fields to last year; field consistency matters more than page count.
Documentation that survives staff turnover
Southeast coastal sites share storm calendars that compress both utility make-ready and generator exercise windows into the same weeks. Treating electrical readiness as a single plan across sizing, transfer timing, and fuel reduces conflicting advice from separate vendors.
Garrett Mechanical documents storm electrical work so facility leads can compare year-over-year test values instead of relying on memory after staff turnover. Written closeout belongs beside permits, insurance packets, and landlord reporting folders.
Browse the knowledge base, coverage map, and facilities vendor management resources when planning multi-site consistency. Call (904) 822-3339 or submit a service request when measured values—not assumptions—should drive the next decision.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Measured field notes from prior visits should travel with the property when ownership changes. Screenshots of controller settings and labeled panel photos reduce repeat discovery fees on the next call.
Disclaimer: This article is for general informational purposes only. It is not professional advice, a quote, or a service agreement. Conditions at your home or property may differ; contact a qualified professional for an on-site evaluation before making repair, safety, or spending decisions.