01
Receive & identify
Confirm supplier, purchase order, part number, quantity and required certification.
Quality starts before assembly
Incoming Quality Control
Every critical fan component is verified against drawings, safety requirements and approved samples before it reaches our production line.
12 Component groups
3 Defect classes
100% Critical checks
Built into every order
We stop quality risks at the factory door.
Reliable electric fans begin with reliable components. Our incoming quality team checks appearance, dimensions, electrical safety and functional performance against order requirements before materials are released.
Non-conforming materials are identified, isolated and reviewed before they can affect production.
Approved supplier verification
Order and drawing comparison
Safety-critical electrical tests
Traceable inspection records
Control before production
Components are released only after the required
inspection points pass.
Our IQC workflow
Four gates from delivery to release
A repeatable inspection path keeps every decision clear, documented and connected to your order requirements.
02
Sample & inspect
Perform visual, dimensional, functional and electrical checks on selected samples.
03
Classify results
Record findings as CR, MAJ or MIN according to their safety and performance impact.
04
Release or isolate
Approve conforming lots or quarantine them for review and corrective action.
Component inspection matrix
What we inspect before assembly
Key checks vary by component and order specification. Select a category to focus the view.
Plug & power cord
CRITICAL Certification & finish Visual
Electrical strength 2500V
Pin dimensions Caliper
Main motor
7 CHECKS Low-voltage start 110V × 3
Noise & oscillation Functional
Electrical strength 1800V
Capacitor
CRITICAL Marking & surface Visual
Capacitance ±5%
Insulation 1500V
Timer
FUNCTION Body & marking Visual
Rotation Smooth
Reset accuracy Verified
Fan blade
BALANCE Surface & color Visual
Profile & size Template
Running vibration No visible shake
Switch
CRITICAL Operation & contact Manual
Assembly fit Verified
Electrical strength 1800V
Plastic parts
APPEARANCE Burrs & cracks Visual
Color consistency Approved sample
Assembly fit Verified
Synchronous motor
6 CHECKS Low-voltage start 110V × 3
Input power 4W
Electrical strength 1800V
Internal wiring
CRITICAL Core & length Order spec
Surface marking Visual
Insulation 2500V
Carton
PACKAGING Print & surface Visual
Dimensions Drawing
Order artwork Confirmed
Clear acceptance criteria
Defects are classified by risk
Inspection effort is focused where a defect could affect compliance, safety, function or customer acceptance.
CR
Critical defect
Potential safety, regulatory or electrical insulation failure.
MAJ
Major defect
Likely to affect assembly, performance or intended product use.
MIN
Minor defect
Appearance or finish issue that does not affect core function.
Full inspection details
Need the complete technical IQC table?
Download the component requirements, test methods and defect classifications used by SF Fan.
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Share your fan type, target market, certification requirements and expected quantity. Our team will review the appropriate quality checkpoints with you.
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