The concrete pump is running, the crew is on overtime, and the 45 kVA generator that has been sitting in the corner of the laydown yard for six weeks just died mid-pour because nobody ever checked its fuel lines. A jobsite generator inspection and pump inspection routine is the difference between temporary power that works when you need it and a very expensive paperweight with a grounding fault waiting to become an electrocution investigation. Most fleets track their trucks and excavators down to the hour, yet gensets, dewatering pumps and light towers live on nobody's PM schedule until something fails at the worst possible moment. This page walks through the eight systems every generator and pump check must cover, why a green light proves nothing about electrical output, and how to put these forgotten assets on the same dashboard as your heavy iron. If you want to see it running on your own units, you can book a 30-minute walkthrough and bring your worst-behaved genset to the call.
Is your generator actually ready, or does it just have a green light?
A digital genset and pump checklist that covers engine, fuel, electrical output, grounding and bonding, exhaust routing, coolant, ATS and emergency stop - captured offline on any phone, with photo evidence and automatic work orders.
- Load-bank and voltage verification, not just "it started"
- Grounding and bonding photos that answer OSHA electrical questions
- Exhaust routing and carbon monoxide checks for enclosed spaces
- ATS transfer test and emergency stop function, logged with timestamps
The real price of an untracked generator or pump
These are not abstract risks. Each number below is a line item you have already paid, or will pay, when temporary power equipment lives outside your preventive maintenance program.
The eight systems every genset and pump check must cover
A proper generator maintenance checklist is not "oil, fuel, done." These are the eight checkpoints that separate a unit that starts from a unit that is safe, legal and ready to carry load.
Engine and fuel system
Oil level and condition, coolant level, belt tension, air filter restriction, and the fuel system end to end: tank water drain, primary filter, line chafe, and day-tank venting. Diesel that has sat for 90 days grows algae that plugs filters under load - the classic mid-pour failure.
Electrical output verification
A green "running" light tells you the engine turns. It says nothing about voltage, frequency or phase balance under load. Log no-load and loaded voltage, hertz, and amperage per leg. A unit showing 208V unloaded that sags to 192V at 60 percent load is a defect, not a pass.
Grounding and bonding
This is where OSHA electrical citations originate. Verify the ground rod, clamp condition, conductor size, and whether the neutral is bonded or floating for the way the unit is wired today. Photograph the rod and connection - that photo is your answer when an inspector asks.
Exhaust routing and CO exposure
Check the muffler, flex section and rain cap, then walk the routing: is the exhaust pointed away from the work area, the air intake of the site trailer, and any trench or basement? Portable generators in partially enclosed spaces are a repeat carbon monoxide killer on construction sites.
Coolant condition
Level is the start, not the finish. Test freeze point and inhibitor strength, look for oil sheen in the overflow bottle, and check hose swelling at the clamps. A genset that overheats at hour six of a ten-hour pour shuts itself down at the worst moment.
Automatic transfer switch
An ATS that has never been exercised will pick the day of an outage to stick. Run the transfer test: kill utility power, time the transfer, confirm the genset picks up load, then retransfer and cool-down. Log both transfer times in seconds.
Emergency stop and guards
Press the e-stop. Every inspection, every unit. Confirm it kills the engine, resets correctly, and is not blocked by a pallet of block. Check belt guards and fan guards are present - they go missing the week a rental unit comes back from a rough site.
Pump-specific checks
For dewatering and trash pumps: mechanical seal weep, impeller wear against the wear plate, suction hose condition and foot-valve seating, priming time, and discharge pressure. A pump that takes four minutes to prime instead of ninety seconds is telling you the wear plate gap is gone.
Generator electrical output test: what "good" actually looks like
Most failed inspections fail on numbers nobody wrote down. Use these working benchmarks when you verify output - and record the actual readings, not a tick box.
| Checkpoint | What you measure | Acceptable range | Fail means |
|---|---|---|---|
| Voltage, no load | Volts at the receptacle panel | Within 5% of nameplate (e.g. 114-126V on 120V) | AVR or brush issue - flag for work order |
| Voltage under load | Volts at 50-75% rated load | Sag no more than 5-7% from no-load reading | Engine governor or fuel starvation under load |
| Frequency | Hertz, loaded | 60 Hz nominal, steady within 1 Hz | Governor fault - tools and VFDs will trip |
| Ground rod | Rod, clamp, conductor visual + photo | Rod driven full depth, clamp tight, conductor undamaged | Electrical citation risk - do not energize |
| ATS transfer | Seconds utility-to-gen and back | Transfers within spec, typically under 10 seconds | Exercise contacts; if it sticks, work order now |
| Emergency stop | Function test | Kills engine immediately, resets cleanly | Lock out the unit until repaired |
A worked example: a site runs two 45 kVA gensets on a 12-week pour schedule. One unit shows 6 percent voltage sag under load at week three. Caught on a checklist, that is a $90 fuel-filter and governor check in the yard. Missed, it is a shutdown at hour four of a pour, a standby crew at $1,800 a day, and a cold joint you get to explain to the engineer.
Put your gensets and pumps on the same PM schedule as your trucks
HVI ships with a dedicated generator and pump inspection template covering all eight systems above - ready to run offline on any phone, with photo evidence and automatic defect-to-work-order flow.
Temporary power inspection: the clipboard versus the app
Most sites still run generator checks on a laminated card zip-tied to the unit. Here is what actually changes when the check moves into a fleet maintenance software platform.
Laminated card and a pencil
- Card is illegible by week two and lost by week four
- "Checked" boxes with no voltage or frequency readings recorded
- Ground rod photo does not exist - good luck in an OSHA interview
- Defect reported by text message, forgotten by Friday
- No PM interval - the unit gets looked at when someone remembers
Digital genset inspection app
- Timestamped, GPS-stamped record stored against the asset forever
- Numeric fields force real readings: volts, hertz, transfer seconds
- Required photo of ground rod, exhaust routing and e-stop label
- Failed item auto-creates a work order with the photo attached
- PM by engine hours or calendar, with due and overdue alerts
The gap that matters most is the middle row. When a safety officer, client auditor or insurer asks how you verify grounding on temporary power, "we have a card somewhere" and "here are 40 timestamped photos" are very different conversations. You can see the grounding photo flow on a live demo using your own unit list.
Generator and pump inspections inside your fleet CMMS, not a separate spreadsheet
HVI is cloud plus mobile vehicle inspection and maintenance work order software. Your gensets, dewatering pumps and light towers sit on the same fleet dashboard as your trucks and excavators - same inspections, same work orders, same uptime numbers.
Ready-made generator and pump template
Engine, fuel, output, grounding, exhaust, coolant, ATS and e-stop are already built in. Clone it, tweak it for site-specific variants, and push it to every crew in minutes.
Offline capture with photo evidence
Remote sites and basements have no signal. Inspections run fully offline and sync later, with required photos of the ground rod, exhaust routing and readings.
Defect-to-work-order automation
A failed voltage sag or stuck ATS becomes a work order the second the inspection is submitted - assigned, parts-reserved and tracked to close, not lost in a group chat.
One dashboard for every asset class
Uptime, cost per asset, PM compliance rate and overdue units - trucks, trailers, gensets and pumps side by side. No more separate spreadsheet for "the small stuff."
Teams moving off paper typically start with the units that hurt most. Sign up free and load your first genset - the template is already waiting.
From dead pump to closed work order: how a jobsite generator inspection flows in HVI
This is the day-one workflow your site supervisors and shop foremen will actually follow - no training binder required.
Scan the unit's QR code
Each genset and pump carries a code. Scan it, and the correct checklist loads with the unit's history, open defects and PM status - even offline at a remote site.
Run the eight-system check
Numeric fields capture volts, hertz and transfer times. Required photo steps cover the ground rod, exhaust routing and e-stop. The app will not submit with a skipped critical item.
Failures become work orders instantly
A failed item creates a work order with the photo, reading and operator note attached. The shop sees it before the operator walks back to the trailer.
PM stays ahead of the calendar
Preventive maintenance schedules run by engine hours or date, with due and overdue alerts. The 250-hour service on the dewatering pump stops being a surprise.
Audits become a search, not a scavenger hunt
Every record is timestamped, photo-backed and tied to the asset. When a client or inspector asks for proof of grounding checks, you filter by unit and export. If you want to walk through this flow on your own fleet, a 30-minute demo covers it end to end.
What to do differently on Monday morning
Treat output testing as the inspection
A generator that starts proves nothing. Record loaded voltage and frequency every time, and treat sag beyond 5-7 percent as a defect that opens a work order, not a note to self.
Photograph grounding every single time
Grounding and bonding is where electrical citations and electrocution investigations begin. A required photo field turns your weakest audit answer into your strongest.
Exercise the ATS and e-stop, not just the engine
Transfer switches and emergency stops fail from sitting, not from use. Log transfer times in seconds and e-stop function on every inspection cycle.
Put small assets on the same dashboard as heavy iron
Gensets and pumps die from neglect, not overwork. When they share the CMMS, PM schedule and work order flow as your trucks, the "forgotten asset" category disappears - and so does the mid-pour shutdown. A generator inspection checklist only protects you if it actually runs.
"I used to find out a generator had a problem when the night shift called me. Now my rule is simple: no loaded voltage reading, no pass. Last quarter we caught three units with fuel issues before they cost us a pour, and when the client's safety auditor asked about grounding on temporary power, I pulled forty timestamped photos in about a minute. That meeting used to take me a week of digging through binders."
Marcus Delaney - Maintenance Manager, civil construction and earthworks contractor
Generator and pump inspection questions, answered
How often should a jobsite generator be inspected?
Why does generator grounding and bonding matter so much for compliance?
Is a green running light enough to confirm electrical output?
What should a dewatering pump inspection checklist include?
Can I run generator inspections offline at a remote site?
See your gensets and pumps on the same dashboard as your heavy iron
Bring your unit list to a 30-minute demo and we will load the generator and pump template live - grounding photos, output readings, ATS tests, automatic work orders and all.
Free to start - Works on any phone, even offline - No card needed
