SME5600D Batch PCBA Cleaning Machine: One-Key Wash, Rinse and Dry by Southern Machinery

Flux residue is a slow, expensive problem on many PCBA lines. Left on the board, it can

cause leakage, corrosion and field failures. Cleaned by hand, boards take operator time,

come out differently from shift to shift, and still hide residue under components. The

SME5600D Batch PCBA Cleaning Machine from Southern Machinery changes that math: a

chemical wash, DI water rinse and hot-air drying run automatically in one key-press cycle

inside an energy-saving, sealed chamber.

What is this machine used for?

The SME5600D is a batch PCBA cleaning machine used to remove flux residue and

contaminants from assembled PCBA after soldering. Boards are placed in a dual-layer

cleaning basket, and the machine automatically washes them with a water-based detergent,

rinses with DI water and dries with hot air.

It is for boards that must be cleaned in batches, off-line, with full process control —

typically high-reliability products in automotive, medical, new-energy and industrial

applications, and high-mix EMS lines that need documented, repeatable ionic cleanliness.

Why residue and manual cleaning cost your line

• Residue left on the board — flux residue that is not fully removed can cause

leakage, corrosion and field failures.

• Manual cleaning is slow — hand-cleaning boards one by one ties up operators and

gives inconsistent results.

• Chemicals are wasted — uncontrolled washing consumes chemistry and water without

predictable quality.

• Hard-to-reach residue — residues under components and in blind areas survive manual

methods.

• High-end products demand proof — automotive and medical boards need documented ionic

cleanliness.

• Aggressive cleaning damages boards — uncontrolled batch machines can damage boards

and components when the process is not controlled.

How the SME5600D cleans a PCBA batch

The working principle is a sealed, automated clean-rinse-dry cycle:

1. Load the basket — place PCBA into the dual-layer cleaning basket

(610 x 560 x 100 mm per layer) and press start.

1. 360-degree spray wash — upper, middle and lower rotation spray rods clean both

sides at 30-80 PSI (reference) with water-based detergent.

1. DI water rinse — DI water rinse repeats 3-5 times automatically to clear ionic

residue.

1. Hot-air dry — hot air up to 99 deg C dries the batch; clean boards come out ready

for the line.

The 0.22 um chemical liquid filter removes solder paste, rosin and flux microparticles so

the chemistry stays cleaner between batches. One-key operation means wash and rinse run by

themselves — no operator babysitting between steps.

Typical application scenarios

• Automotive and medical electronics — boards that require documented ionic

cleanliness and repeatable process control.

• Smart EMS factories — batch cleaning after THT insertion and wave or selective

soldering, without pulling the line down.

• High-mix ODM lines — one-key cycles keep batch quality consistent across operators

and shifts.

• Industrial control and new-energy products — controlled residue removal before

final inspection, testing or next process steps.

How it fits into a complete PCB assembly line

The SME5600D works as an offline batch step after soldering. A typical complete line might

flow:

SMT printing -> pick-and-place -> reflow -> inspection -> THT insertion -> wave or

selective soldering -> SME5600D batch cleaning -> final inspection / test / packing.

It complements the inline SMT/THT line rather than blocking it: boards that need cleaning

are taken off-line in batches, cleaned with controlled chemistry, and returned ready for

the next process. Southern Machinery can plan the cleaning step together with the rest of

the line — board handling, soldering and inspection included — so the cleaning station

matches your batch volume instead of becoming a bottleneck.

Key selection parameters checklist

Send these with your inquiry so the machine and cycle can be confirmed for your boards:

• Board details — board size, component heights and batch volume.
• Flux types — rosin, water-soluble or no-clean; contamination level.
• Process targets — clean / rinse / dry times and temperatures.
• Facility — power, DI water supply, air (0.5-0.7 MPa) and floor space.

Reference specifications

Values below support initial evaluation and remain subject to final technical

confirmation against your boards and flux.

| Item | SME5600D reference value |

| --- | --- |

| Cleaning basket | 610 x 560 x 100 mm (L x W x H), dual layer |

| Cleaning process | Chemical detergent wash -> DI water rinse -> hot-air drying |

| Spray system | Upper / middle / lower 3 x 360-degree rotation spray rods, 30-80 PSI adjustable |

| Process parameters | Clean 10-20 min, rinse 1-2 min x 3-5, dry 20-30 min, clean temp 40-60 deg C |

| Tanks | Concentrated liquid 30 L, dilution 60 L, spray 18 L, temporary tank heater 6 kW |

| Drying | Room temperature to 99 deg C adjustable, drying heater 6 kW |

| Filtration | 0.22 um chemical liquid filter (solder paste, rosin, flux microparticles) |

| Operation | One-key operation; wash + rinse automatic; sealed cleaning room with visible window |

| Facility requirements | Air 0.5-0.7 MPa dry and oil-free, 400-600 L/min; external DI water supply; power per machine nameplate |

ROI, quality and capacity value

For an EMS line cleaning PCBA batches by hand today, the source brochure's worked example

is:

• 1 operator per batch freed from manual board cleaning.
• ~5x faster batch cleaning versus manual one-by-one methods (reference estimate).
• 0 boards re-cleaned when the process runs to the documented parameters.
• Less than 18 months typical payback for a batch PCBA cleaner on a mid-size line

(reference estimate).

These are planning estimates based on reference EMS lines; actual payback depends on batch

volume, flux types and quality targets. Southern Machinery calculates a line-specific

payback with your numbers during the consultation.

Batch or inline: choosing from the cleaning family

Southern Machinery offers a cleaning family so the right machine matches the task:

• SME5600D — batch PCBA cleaning with one-key operation, for boards that must be

cleaned off-line with full process control.

• SME-6300 / SME-6200 / SME-7600 — inline cleaning for high-volume lines where boards

cannot leave the line.

• SCM5600 — batch PCBA cleaning machine with the documented operation and maintenance

manual.

• SME-5200 / SME-5300 — pallet and fixture cleaning machines.
• S-6200 / SME-24 — nozzle cleaners that keep placement nozzles free of residue.

Installation and commissioning in brief

Reference procedure based on the SCM5600 operation and maintenance manual; full

documentation ships with the machine:

1. Site preparation — place the machine on a level floor with power, DI water supply,

air (0.5-0.7 MPa, 400-600 L/min) and drainage at the position.

1. Utilities — connect power and DI water; connect the dry, oil-free compressed air

supply.

1. Pre-run check — check nozzle angles, liquid tank for impurities, electric and

pneumatic parts, and that pipes are connected firmly without leakage.

1. Liquid and power on — add cleaning liquid to the tanks, turn the main breaker on,

then the power switch; verify the resistivity meter and pressures.

1. Test cycle — run a test batch through wash, rinse and dry; check the result, then

release for production.

FAQ

What does the SME5600D clean?

It cleans flux residue and contaminants from assembled PCBA using a water-based detergent,

DI water rinse and hot-air drying in a batch process.

How does the cleaning process work?

Place boards in the dual-layer basket and press start: upper, middle and lower 360-degree

rotation spray rods wash at 30-80 PSI (reference), then DI water rinse repeats 3-5 times,

then hot air dries up to 99 deg C — automatically.

What are the recommended process parameters?

Reference parameters: cleaning 10-20 minutes at 40-60 deg C, rinse 1-2 minutes per cycle

for 3-5 cycles, drying 20-30 minutes up to 99 deg C. Final values are confirmed against

your boards and flux.

What size boards fit the basket?

The dual-layer cleaning basket is 610 x 560 x 100 mm per layer, giving two layers of batch

capacity per cycle.

Is it energy efficient?

Yes — the SME5600D is designed as an energy-saving, environmental protection machine with

a sealed cleaning room, 0.22 um liquid filtration and controlled chemistry use.

How do I get a price and delivery time?

Email info@smthelp.com or WhatsApp +86 136 0256 2576 with your board details, flux types

and batch volume. Quotation and delivery schedule are provided after technical

confirmation — typically the same working day.

Why buy from Southern Machinery

Southern Machinery was founded in Shenzhen, China in 2011 and serves 237+ customers

worldwide. We focus on SMT/THT PCB assembly automation equipment and can provide complete

line solutions covering SMT, THT, wave soldering, board handling and inspection, with an

emphasis on high efficiency and cost-effectiveness. Every project includes professional

installation and training, global service and spare parts support.

From board and flux review to technical consultation, configuration, installation and

after-sales support, the SME5600D project is confirmed before you commit — the cleaning

machine and cycle are matched to your batch volume, then operators are trained on

one-key operation.

Next step: send your board size, flux types, batch volume and quality target to

info@smthelp.com for a machine recommendation, quotation and delivery schedule. Browse

the machine catalog at file.autoinsertion.com and machine images at ph.smthelp.com.