QIYUE FAN · PHOTO-BASED REPLACEMENT REVIEW
How to Start an Industrial Fan Replacement When Only Photos Are Available
No model? No readable nameplate? No original drawing? Old fan photos can still provide enough evidence to start the replacement review - but final fan selection still requires the operating duty to be verified.
02 · WHAT PHOTOS SHOULD YOU TAKE?
Multiple Clear Views Are More Useful Than One Close-Up
Take the complete fan first, then record the inlet, outlet, motor, drive, foundation, remaining identification tags and any dimensions that can be measured on site.
If possible, place a tape measure or another known-size reference in the photo. This can make the equipment evidence much more useful during the first replacement review.
03 · WHAT PHOTOS CANNOT CONFIRM
A Photo Shows What the Fan Looks Like - Not What the System Requires
Photos and dimensions can start a replacement review. Airflow and pressure are still required before final fan selection.
04 · KEY DIMENSIONS TO MEASURE
Confirm the Installation Interface Before Selecting a Replacement
The most useful field measurements are the dimensions that determine whether the new fan can physically connect to the existing ductwork and foundation.
Air-Side Interfaces
Inlet diameter or W × H, outlet W × H and outlet orientation.
Foundation Interfaces
Base length, width, anchor-bolt spacing and center height.
Available Space
Overall height, motor position and surrounding clearance.
05 · WHAT IF AIRFLOW OR PRESSURE IS UNKNOWN?
Recover the Duty Before Final Fan Selection
If the current duty is unknown, the next step is not to guess from the fan dimensions. Instead, use any available historical or system evidence to recover, calculate or measure the required operating point.
01
Old Nameplate
Use any readable historical performance or model information.
02
Old Curve / Datasheet
Recover the original airflow and pressure relationship.
03
System Information
Review ducts, filters, equipment and other system resistance.
04
Field Measurement
Measure or confirm the operating condition where practical.
06 · PHOTO-BASED REPLACEMENT REVIEW
From Old Fan Photos to a Verified Replacement
01
Photos
Record the existing fan and installation.
02
Identify
Confirm fan type and visible configuration.
03
Measure
Verify inlet, outlet and foundation interfaces.
04
Verify Duty
Confirm airflow, pressure and operating conditions.
05
Select
Select the replacement fan and confirm interfaces.
07 · START YOUR REPLACEMENT INQUIRY
Send What You Know - Leave Unknown Items Blank
EXISTING FAN EVIDENCE
Full fan photos
Inlet-side photo
Outlet-side photo
Motor / drive photo
Foundation photo
Any plate or equipment tag
Old drawing / catalog / curve if available
Inlet-side photo
Outlet-side photo
Motor / drive photo
Foundation photo
Any plate or equipment tag
Old drawing / catalog / curve if available
CURRENT PROJECT DATA
Inlet size: __________
Outlet size: __________
Base size: __________
Motor power: __________
Voltage / frequency: __________
Required airflow: __________
Required pressure: __________
Medium / temperature: __________
Outlet size: __________
Base size: __________
Motor power: __________
Voltage / frequency: __________
Required airflow: __________
Required pressure: __________
Medium / temperature: __________
No drawing? No curve? No readable nameplate? Start with the old fan photos and the measurements you can obtain.
08 · FAQ
Industrial Fan Replacement from Photos FAQ
Can you identify an industrial fan from a photo?
Photos can often identify the general fan type, drive arrangement and visible installation configuration. They may not confirm the exact model or performance.
Can a replacement fan be selected using only photos and dimensions?
Not reliably. Photos and measurements help confirm the mechanical interfaces, but airflow and pressure must still be verified before final fan selection.
What if the old fan has no readable nameplate?
Send full fan photos, motor information, key dimensions and any remaining tag, drawing, curve or catalog information.
What if static pressure is also unknown?
Review the duct system, filters, process equipment and other system resistance, or use available project design data or field measurements to establish the pressure basis.
Does the replacement fan need to be the same model as the old fan?
Not necessarily. The replacement should match the required operating duty and installation interfaces. Internal design or model designation can be different when those requirements are properly verified.
09 · RELATED REPLACEMENT GUIDES
Continue the Replacement Review
Industrial Fan Nameplate Replacement Guide → Use old fan and motor nameplate data correctly. GA Drawing Review → Verify installation dimensions and physical interfaces. Static Pressure Unknown → Review how to establish the pressure basis before selection. Industrial Fan Replacement & Spare Parts → Continue into the broader replacement engineering process. QIYUE FAN · REPLACEMENT ENGINEERING
Only Have Old Fan Photos? Start There.
Send clear photos, key dimensions and any old equipment information you still have. We can first identify the existing configuration, then determine what additional duty data is required before selecting a replacement fan.