4L Professional Ultrasonic Cleaner for Electronic Components & PCB Boards | Heated Parts Washer

Are you looking for a professional ultrasonic cleaner for cleaning electronic components and PCB boards? The K340HT 4L heated ultrasonic parts washer steps into the 4-liter class with 180W of ultrasonic power—three times the output of the smallest mechanical models. This is the point where the KHT mechanical control series transitions from personal care to genuine workshop capability. Its tank accommodates larger circuit boards, multiple small tools, and batches of components that would overcrowd a smaller bath. The mechanical knobs remain, but the cleaning force behind them is substantially upgraded.

The 4L-capacity ultrasonic cleaner strikes a practical balance. It is still compact enough for a workbench corner, yet large enough to submerge a full-sized PCB, a set of wrenches, or a disassembled bicycle hub. The 180W transducer array ensures the entire ultrasonic bath receives active cavitation, even with a full load of parts.

• 180W Ultrasonic Power – A significant step up that delivers industrial-strength cavitation in a benchtop ultrasonic cleaner.
• 300W Heater – Rapid heat-up for the 4L ultrasonic bath; reaches working temperature faster than lower-wattage models.
• Mechanical Knob-Controlled Timer (1–99 min) – Extended timing range allows longer degreasing cycles for stubborn contaminants.
• 4L Rectangular Tank – 300x150mm footprint, fits elongated items such as PCB boards and hand tools.

• PCB and Electronics – Professional ultrasonic PCB cleaner for cleaning flux residues from circuit boards after soldering. The non-abrasive cavitation reaches between closely spaced components without mechanical scrubbing.
• Electronic Components – Connectors, switches, and small assemblies that require solvent-free cleaning.
• Precision Tools – Calipers, micrometers, and measuring instruments where abrasive cleaning would affect accuracy.
• Small Mechanical Parts – Ultrasonic parts washer for removing gears, bearings, and linkages from hobby and repair projects.

What’s Included

• K340HT 4L mechanical ultrasonic cleaner
• Stainless steel cleaning basket
• Stainless steel lid
• Power cable

Parameter	Specification
Model	K340HT
Volume	4 Litres
Ultrasonic Power	180W
Frequency	40kHz
Heating Power	300W
Temperature Range	0–80°C
Timer	1–30 minutes adjustable
Internal Tank Size	300 x 150 x 100 mm
Overall Size	330 x 180 x 240 mm
Carton Box Size	380 x 240 x 340 mm
Gross Weight	5.0 kg

All are the same 4-liter ultrasonic cleaners with various functions such as mechanical knob control, adjustable power, and multifunctional – Same volumes, same specifications, different functions.

More mechanical knob control ultrasonic cleaners, ranging from 1.3 liters to 30 liters, are available for your choice. Check if the internal tank size is available for your cleaning items.

Explore More Mechanical Control Series

Q: Can I clean a populated PCB in this unit?

Ultrasonic cleaning is suitable for many PCBs, but caution is advised for boards with sensitive MEMS sensors, unsealed relays, or certain crystal oscillators. Always consult the component manufacturer’s cleaning guidelines first. For boards approved for ultrasonic cleaning, use a low-foaming electronics-specific solution and ensure thorough drying afterward.

Q: Does the mechanical timer support continuous running?

The mechanical timer on this model has a maximum setting of 30 minutes. For cycles longer than this, simply reset the dial when the timer expires. If continuous running is critical for your workflow, consider our KHTDP adjustable-power ultrasonic cleaners with a continuous-run mode.