How to choose a PCB cleaning machine manufacturer through sample testing, process selection, customisation, FAT and technical support.
ByadminA reliable PCB cleaning machine manufacturer should identify the contamination, test representative boards, define the cleaning process and build the equipment around the production requirement.
Do not compare suppliers by machine appearance, board size and price alone. Evaluate their application engineering, sample testing, customisation, manufacturing, factory acceptance testing and technical support.
Start with the workpiece and production stage.
A bare PCB before solder paste printing may require dry removal of dust, fibres and loose particles. An assembled PCBA after soldering may require brush cleaning, aqueous washing or local dry-ice cleaning.
Many buyers use “PCB cleaning machine” for both applications. However, the cleaning mechanism, factory utilities and verification method are different. See what a PCB cleaning machine does before comparing equipment.
Sample testing shows whether the proposed process can remove the real contamination without creating another problem.
The test should use representative boards, actual flux or residue and the proposed cleaning chemistry. The result should confirm cleaning access, material compatibility, rinsing, drying, cycle time and repeatability.
A clean-looking board does not prove ionic cleanliness. Flux residue may be visible, whilst ionic contamination often requires ROSE, ion chromatography, SIR or another specified test method.
For BGA, QFN and other low-standoff components, verify whether the wash and rinse can reach beneath the package. Machine type alone does not prove cleaning access.
The manufacturer should explain why a cleaning method fits the workpiece and residue. Brush cleaning, aqueous washing, dry-ice cleaning and DI-water rinsing are not interchangeable.
For a detailed process comparison, see how to choose a PCBA cleaning process after soldering.
| Production requirement | Suitable process | Relevant DEZ equipment |
|---|---|---|
| Dust and loose particles on both sides of bare PCBs before printing | Brushes, ionised air, vacuum extraction and tacky rollers | DEZ-C753S Double-Sided PCB Cleaning Machine |
| Visible residue and loose solder balls on one accessible solder side | Cleaning-agent application and brush cleaning | DEZ-C758 Single-Sided PCBA Cleaning Machine or DEZ-C760 Automatic PCBA Brush Cleaning Machine |
| High-mix PCBAs requiring batch washing, rinsing and drying | Offline aqueous spray cleaning | DEZ-C743 Offline PCBA Batch Cleaner |
| Continuous post-solder PCBA cleaning | Inline chemical washing, DI-water rinsing and hot-air drying | DEZ-C1360 Inline PCBA Cleaning Machine |
| Dedicated rinse-water production | RO and mixed-bed DI-water treatment | DEZ-CS300 Deionized Water System |
The complete selection route is available on the PCBA flux residue and ionic contamination cleaning application page.
Standard equipment may not match every board, factory or production line. Confirm who performs the mechanical design, electrical control, machine assembly, PLC/HMI integration and commissioning.
Relevant customisation may include:
DEZ completes machine assembly, electrical control, process testing and application-specific configuration. Additional dimensions and functions can be assessed during engineering review. See DEZ manufacturing and engineering capabilities.
The equipment cannot be separated from its cleaning chemistry and factory utilities.
For aqueous PCBA cleaning, confirm the approved cleaner, operating concentration, wash temperature, DI-water quality, filtration, drainage, exhaust and drying requirement.
For inline equipment, also confirm conveyor height, transfer direction, fixed edge, board clearance and upstream/downstream communication.
DI water is used to rinse dissolved contamination and remaining cleaning agent after washing. It should not be treated as the primary flux-cleaning stage unless the validated process specifically uses it that way.
A useful quotation should define more than the model and price. It should include:
Factory acceptance testing should run the agreed process on representative samples. Verify cleaning, rinsing, drying, board handling, cycle time, controls, alarms, leakage protection and safety interlocks.
FAT is not simply a machine power-on test. See how DEZ SMT equipment is tested before shipment.
Technical support should cover both the machine and the cleaning process.
Confirm installation guidance, operator training, recipe settings, cleaning-agent management, filter maintenance, troubleshooting and spare-parts availability.
Also compare operating costs such as cleaner consumption, DI water, filters, electricity, compressed air, exhaust and routine maintenance. A lower purchase price may result in a higher process cost if the equipment is poorly matched to the application.
DEZ SMT manufactures PCB cleaning machines for bare-board surface cleaning and PCBA cleaning machines for brush, offline batch and continuous aqueous cleaning after soldering.
Send your PCB or PCBA samples to DEZ to verify the cleaning process before ordering the machine.
