Standby Generator Weekly Visual Check: What Facility Staff Should Look For
Generator readiness starts with controller status, fuel level, leaks, charger indication, housekeeping, and whether the unit is in AUTO. Visual checks do not replace required exercise or service.
Last reviewed 2026-09-12 · General facility-maintenance information, not a substitute for site procedures, manufacturer instructions, codes, or qualified professional judgment.
Safety boundary
Likely causes
- Controller left out of auto
- Low fuel
- Battery charger alarm
- Fluid leak
- Blocked ventilation or debris
Symptom → cause → first move
Controller left out of auto
Check: Check controller status
First move: Restore authorized operating mode
Low fuel
Check: Verify auto if required
First move: Arrange fuel delivery
Battery charger alarm
Check: Look for fuel, oil, or coolant leaks
First move: Create service work order for alarms or leaks
Fluid leak
Check: Check battery and charger indicators
First move: Keep area clear
Blocked ventilation or debris
Check: Check fuel level and housekeeping
First move: Restore authorized operating mode
What to check first
Bring these
- Checklist or work-order app
- Flashlight
- Camera
- Basic inspection tools
Before touching anything
- Confirm the exact location and complaint.
- Photograph labels, settings, fault codes, and the original condition.
- Determine whether the failure affects one item or several nearby items.
- Know how to safely isolate the system if the task requires it.
Step-by-step procedure
- 1Check controller statusRead controller status and active alarms from normal access; do not open electrical panels or initiate an unscheduled run.
- 2Verify auto if requiredConfirm AUTO only if required by the site operating plan; do not switch modes during service or override a technician's lockout.
- 3Look for fuel, oil, or coolant leaksObserve accessible areas for fuel, oil, or coolant leakage without approaching hot or moving parts; do not remove a hot coolant cap.
- 4Check battery and charger indicatorsRecord charger and battery indicators; leave battery terminals and internal wiring to the approved maintenance procedure.
- 5Check fuel level and housekeepingCheck visible fuel level, ventilation clearance, and housekeeping. Escalate alarms and leaks, record readiness, and preserve scheduled professional testing rather than treating a visual walk as a load test.
Routine fixes that make sense here
- Restore authorized operating mode
- Arrange fuel delivery
- Create service work order for alarms or leaks
- Keep area clear
Stop and call a licensed professional when
- Fuel leak is present
- Battery is swollen or leaking
- Controller shows persistent fault
- Required testing is overdue
Common mistakes
- Replacing parts before proving the failure.
- Changing several settings or components at once.
- Failing to photograph the original condition.
- Ignoring whether nearby equipment has the same symptom.
- Crossing into electrical, refrigerant, life-safety, structural, or plumbing work beyond training.
FAQ
What should I check first?
Start by deciding whether the problem is local to one fixture or piece of equipment. Then begin with the simplest safe observation: check controller status.
What is the most common mistake?
Replacing parts before proving the failure. BuildingWrench recommends documenting the symptom, changing one thing at a time, and testing after each change.
When should maintenance stop?
Stop when the repair crosses your training or site-safety boundary. In this case, one clear handoff point is: fuel leak is present.
What should I document?
Record the exact location, model or asset tag, what the equipment was doing, what you checked, what you changed, and whether the fix held through repeated testing.