1. Pre-Inspection Preparation (Document & Sample Check)
- Specification Review: Inspector cross-checks model number, user manual, parts list, exploded view, and carton marking against the buyer’s PO.
- Sample Selection: Random sampling per AQL levels (typically General Level II). For gas/electrical function tests, special level S-2 or S-3 applies.
- Critical Defect Definition (Pre-defined):
- Gas leak, flame flashback, unstable structure, missing safety labels.
- Any electrical shock risk or sharp edges on assembled unit.
2. Packaging & Labeling Check (Before Unpacking)
| Checkpoint | Criteria |
|---|---|
| Carton integrity | No crush, water damage, poor taping. |
| Shipping marks | PO#, model, Qty, G.W., country of origin, handling icons (fragile, this side up). |
| Barcode/UPC | Scan and verify against PO data. |
| Poly bag warning | Suffocation labels required if bag thickness <0.038mm. |
3. Workmanship & Visual Inspection (After Unpacking)
Inspector assembles one sample fully (per AQL requirement) and partially inspects others.
- Surface & Coating:
- No rust, pitting, or coating peeling on grates, burners, or firebox.
- Porcelain enamel – check for chipping at edges (critical for corrosion resistance).
- Stainless steel – check for passivation (no rainbow discoloration).
- Welds & Joints:
- Full penetration on leg supports and axle brackets.
- No spatter or burn-through on tube burners.
- Hardware:
- All screws, washers, lock nuts present.
- No missing cotter pins on wheels/axle.
- Plastic Components (knobs, handles, wheels):
- No flash or sink marks.
- UV resistance verification (if specified).
- Sharp Edges:
- Feel test on all sheet metal edges – must be rolled or deburred (critical defect if sharp).
4. Dimensional & Assembly Fit Check
- Hole alignment: Pre-drilled holes on side shelves, burner box, and cart must match without forcing.
- Grate fit: Cooking grates must sit level, not rock, and have ≤2mm gap to firebox wall.
- Igniter electrode gap: 3–5 mm from burner port (critical for spark ignition).
- Gas hose length & routing: Not pinched or touching hot surfaces.
- Wheel alignment: Axle must be straight; wheels rotate without wobble.
5. Functional Tests (Specific to BBQ Type)
For Gas BBQs (LPG/NG)
| Test | Method | Acceptable result |
|---|---|---|
| Gas leak test | Soap solution on all fittings, regulator, valve stems (at 0.5 psi air pressure). | No bubbles after 30 sec. |
| Ignition test | Perform 10 ignitions. | First spark lights within 5 attempts; cross-lighting all burners. |
| Flame pattern | Visual at low and high setting. | Blue/yellow stable flame; no lifting, flashback, or yellow tipping >2cm. |
| Flame tampering | Wind effect simulation (fan). | No extinguishing below 10 mph wind. |
| Regulator check | Verify correct gas type (e.g., 28 mbar for butane, 37 mbar for propane). | Stamped label matches PO. |
| Hose & regulator assembly | Date code ≤ 5 years, no cracks. | No kinking or cuts. |
For Charcoal BBQs
- Ash catcher operation: Slides or clips securely, doesn’t detach when bumped.
- Damper movement: Open/close fully without binding.
- Grill height adjustment (if present): Smooth, locks into position.
- Thermometer (if lid-mounted): Compare to calibrated thermocouple at 200°C ±15°C.
For Electric BBQs
- Leakage current test (Hipot): 1500V/5mA – no breakdown.
- Ground continuity: <0.1 ohm from plug ground pin to exposed metal body.
- Heating element uniformity: No hot spots after 10 min.
- Thermostat function: Cycles off within ±10°C of setpoint.
- Power cord strain relief: Pull test 60 lbs for 1 min – no displacement.
6. Stability & Structural Safety
- Tip-over test: Loaded with cooking grates and grease tray. Tilt 15° from level – must not tip.
- Wheel locking (if present): Engaged – unit does not move on 10° incline.
- Grease management system: Pull out tray without binding; foil liner fits; no leakage at corners.
- Lid drop test: Open 180° and release – must not crack hinges or slam closed.
7. Component-Specific Checks
| Component | Check |
|---|---|
| Burner tubes | No obstruction (spider webs/debris). Venturi openings clear. |
| Control valves | Rotate smoothly from OFF to HIGH with tactile click at OFF. |
| Regulator | Quick connect coupling (if QCC1) – seats fully without cross-threading. |
| Thermometer (lid) | Calibration error ≤ ±10°C at 200°C. |
| Side burner (if any) | Same as main burners plus lid/flame resistance. |
| Rotisserie motor (if any) | Noise ≤ 55 dB; output shaft torque ≥ 3 N·m. |
8. Safety Label & Manual Verification
- Warning labels: Present on side shelf, inside lid, and near gas hose (per UL 869 or CSA 1.6).
- Text: “Do not use indoors”, “Combustible materials – 24 inch clearance”.
- Gas type label: Permanent, near regulator connection.
- Manual language & diagrams: Must match actual assembly sequence.
- Certification marks: UL, ETL, CSA, or CE logo appears on rating plate and box.
9. Final Assembly Test (2–5% of samples, fully built)
Inspector fully assembles a random sample as an end user would:
- Assembly time: Compare to claimed assembly time in manual (±20%).
- Missing parts check: Hardware pack weight verification (scale).
- Functionality after assembly:
- Light all burners.
- Achieve 300°F on lid thermometer within 10 min (gas).
- Check for unusual gas smell after turning off.
- Disassembly & repack: Unit fits back into carton without force, foam supports align.
10. Reporting & AQL Decision
| Defect Class | Example (BBQ specific) | AQL Limit |
|---|---|---|
| Critical | Gas leak, missing flame guard, sharp edge accessible, electrical shock | 0% |
| Major | Ignition fails >2 burners, unstable wheel, missing safety label, enamel chip >5mm | 1.5% |
| Minor | Scratches on side shelf, knob hard to turn, poor print on carton, missing spare screw | 4.0% |
Final decision:
- Pass – All critical zero, major ≤ 1.5%, minor ≤ 4.0%.
- Conditional pass – Minor over AQL but major zero – rework label/repack required.
- Fail – Any critical defect or major over limit – 100% sort or reject.