PCFD Annual Pump Service Test

APPARATUS & TEST INFORMATION

Department Unit / Apparatus ID Date Test Location Draft Source Pump Make / Model Pump Serial # Rated Capacity (GPM) Engine Hours Mileage Pump Hours Air Temp (°F) Water Temp (°F) Lift (ft) Elevation (ft)

PRE-TEST CHECKS

ENGINE SPEED, PRIMING & VACUUM TESTS

NO-LOAD GOVERNED SPEED

Spec (RPM) Actual (RPM)

Load speed must not exceed spec

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PRIMING TEST

Time to Prime (sec)

Max 30 sec ≤ 1250 GPM · 45 sec 1500+ GPM (limit: set capacity)

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VACUUM TEST

Developed (in. Hg) Loss / 5 min

Min 22 in. Hg developed · max 10 in. Hg loss

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PUMPING TEST

Net pump pressure = discharge PSI − intake PSI (add lift and friction losses when drafting). Net, Flow, and % of Rated calculate automatically from your entries. Total test time under load: 45 min minimum. Engine speed shall not exceed no-load governed speed.

PRESSURE CONTROL DEVICE TEST

Relief valve or governor — discharge pressure rise must not exceed 30 PSI when discharges are closed.

INTAKE RELIEF VALVE (IF EQUIPPED)

Set Pressure (PSI) Opens At (PSI) Result

TANK-TO-PUMP FLOW TEST

Rated Flow (GPM) Actual Sustained (GPM) Tank Capacity (gal)

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Must meet or exceed rated tank-to-pump flow, sustained until tank is ~80% emptied.

GAUGE & FLOWMETER TEST

Gauges: within ±10 PSI of master at 150 / 200 / 250 PSI · Flowmeters: within ±10% of actual flow.

TEST EQUIPMENT USED

Master Gauge(s) / Kit Calibration Date Pitot / Flow Device Hose / Nozzle Setup

DEFICIENCIES / CORRECTIVE ACTION REQUIRED

TEST RESULT & CERTIFICATION

OVERALL RESULT

PASS FAIL — remove from service / repair CONDITIONAL — deficiencies noted above

Test Conducted By (print)

Signature

Sign above with a finger or stylus

Date signed

Witnessed By (print)

Signature

Sign above with a finger or stylus

Date signed

FIELD REFERENCE — SMOOTH-BORE PITOT FLOW

Companion to the NFPA 1911 pump service test · GPM = 29.83 × 0.997 × d² × √P

Target nozzle setups by rated capacity

Overload test (165 PSI net) uses the same flow and setup as the capacity test. Your apparatus's rated capacity is highlighted. Multiple tips = identical tips flowing simultaneously; pitot each tip and sum the flows.

Rated Cap (GPM)	Test Stage	Target Flow	Nozzle Setup	Flow / Tip	Target Pitot / Tip

Setups chosen to keep pitot readings in the 30–90 PSI band for accuracy. Any tip/pitot combination that reaches the target flow is equally valid.

Pitot technique — quick rules

Hold the pitot blade in the center of the stream, away from the tip approximately half the nozzle diameter.
Keep the blade edge-on and steady; read the gauge only when the needle settles. Bleed air from the pitot before reading.
Stream must be solid at the point of measurement — turbulence or a broken stream reads low.
Read to the nearest 1 PSI. Between table rows, interpolate — flow changes ~1% per 2% change in pitot pressure (square-root relation).
For the capacity run, set flow first (throttle to target pitot), then trim to 150 PSI net. Re-check pitot after every throttle change.

Pitot pressure → flow (GPM) table

Rows: pitot PSI · Columns: tip diameter · Values: GPM per tip. The form computes this automatically — this table is for field reference.

Pitot PSI	1"	1-1/8"	1-1/4"	1-3/8"	1-1/2"	1-3/4"	2"	2-1/4"	2-1/2"

GPM = 29.83 × 0.997 × d² × √P, where d = tip diameter (in.) and P = pitot (velocity) pressure (PSI).