StencilWasher ZDO
Zero Discharge
Stencil and Misprint Cleaning System

StencilWasher Video Presentation

Aqueous Technologies' StencilWasher ZDO is fully closed-loop (zero discharge). It utilizes precisely controlled sound waves to remove un-reflowed solder paste from stencils, screens and misprints. At 40 kHz, the ultrasonic energy is gentle enough not to damage delicate parts yet is highly effective in the removal of dried pastes on fine-pitch stencils. The built-in ultrasonic "sweep" generator oscillates the cleaning frequency between 37 kHz and 43 kHz, preventing damage to wire bonds and other delicate devices.

StencilWasher ZDO is capable of cleaning stencils or misprints up to 29" x 29" in size (full immersion).

StencilWasher ZDO is equipped with many standard features including:

  • Zero discharge configuration for wash and rinse sections

  • Programmable digital wash cycle timer

  • Safe 31 watts per liter power ratio

  • Wash solution heating system with programmable digital temperature controller

  • Wash solution solder paste filtration system with stainless steel housing

  • Rinse water solder paste filtration system with stainless steel housing

  • Hand-held rinse wand

  • Hand-held airknife

  • Fully enclosed (cabinetized)

  • Ten year limited transducer warranty

StencilWasher ZDO is designed to remove all solder-paste types and uncurred adhesives in cycle times averaging less than five minutes while directing no fluids to the drain. 


Features / Capabilities:

Pastes Removed: All
Removes Adhesives: Yes
Discharge: None
Wash Solution Recycler: Standard
Wash Solution Solder Paste Filter: Standard
Rinse Water Recycler: Standard
Rinse Water Solder Paste Filter: Standard
Filtration Pump: Standard
Rinse Wand: Standard
Hand-Held Airknife: Standard
Wash Solution Heater: Standard


Dimensions: 30"D x 55”W x 45”H
Weight: 600 lbs
Construction: Welded Tube Steel Frame
16 Gauge Steel Panels
Finish: Powder-Coating Epoxy
Electrical Requirements (North America):
208/240 VAC 1 Phase 50 amps
Wash Tank Capacity: 35 Gallons (133 Liters)
Maximum Stencil Size (full immersion): 29" x 29" (736.6mm x 736.6mm)
Wash Cycle Digital Timer: 1-99 Minutes
Ultrasonics: 1000 Watt Side Mounted Transducers
Hand-Held Rinse Wand: Standard
Hand-Held Airknife: Standard