Graymills Super Sonic OMI User Manual
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Always wear appropriate safety items such as gloves, 
apron, safety glasses or goggles when loading or 
unloading unit. 
 
If you have any questions regarding the 
correct cleaning fluids to use in this unit, call 
Graymills at 773-248-6825 and ask for 
Customer Service. 
POWER SUPPLY, WIRING AND GROUNDING
WARNING
HIGH VOLTAGE! Install ground and wiring 
according to local and National Electrical Code 
requirements. 
• Install a fused disconnect switch on all power
legs near the unit
• Disconnect and lockout electrical supply before
installing or servicing unit.
DANGER
Failure to permanently ground the unit and 
controls before connecting to electrical power can 
cause shock, burns or death. 
Unit must be properly grounded to prevent electric 
shock hazard. The unit should be wired to the electrical 
supply by a qualified electrician. There is a grounding 
attachment point in the control cabinet that is a ¼”-20 
bolt with a ground symbol adjacent to it. 
 
User must supply a GFCI for the electrical service in 
areas where it is required. 
 
DANGER
Do Not operate the unit unless the electrical 
control cabinet is closed and secured. Only trained 
maintenance personnel should open the electrical 
control box.
WARNING
Keep pump and motor clean and free of all 
contaminates. Never allow any liquids to come
into
contact with motor or electrical systems as an
electric shock hazard could result. 
 
Care should be taken to avoid clogging the air intakes 
for the ultrasonic generators, located on a rack at the 
back of the unit, with dust or dirt. Do NOT add any 
additional screens or filters to the air intake. 
Excessive ambient temperature (over 105
0
F) can
permanently damage the ultrasonic generator circuits.
DESCRIPTION/SPECIFICATIONS
The immersion cleaning system described in the 
following sections has been designed for a wide variety 
of parts cleaning applications requiring gentle but 
thorough cleaning of intricate parts. The information in 
this manual will allow the operator/technician to 
operate the unit to get the system’s maximum cleaning 
potential. 
 
The unit is constructed as a self-contained, all stainless 
steel unit with a weir chamber and lift platform. There 
are attachment points for a roller platform for parts 
handling on both sides of the unit. The unit features 
heated 
aqueous
cleaning
fluid
and
ultrasonic
generators and transducers. 
 
Typical operation of the unit includes immersion of the 
parts into the tank using the lift platform, with parts 
cleaning action improved by platform agitation and use 
of ultrasonics to thoroughly clean parts. 
 
The unit has a number of features that make it easier 
to use and maintain the unit, including: 
• Stainless-steel, corrosion resistant tank and
exterior
• Ultrasonic Cleaning precisely controlled by a
timer
• Heated aqueous unit provides safe, non-toxic
cleaning without solvent disposal costs
• Sparger System removes surface oil and
contaminants from the surface of the cleaning 
tank so parts emerge cleaner 
• Sparger System works automatically to
circulate heated cleaning solution throughout 
the cleaning tank to reduce downtime 
• Automated lift platform for easy parts
loading/unloading
• Electronic
Controls
and
Touch-Screen
interface for easy setup and operation
Unit Specifications
Cleaning Fluid
Water and aqueous 
detergent 
Tank Capacity (including weir 
chamber) 
183 gallons
Weight of Unit (empty)
1250 pounds
Weight of Unit (with fluid)
2800 pounds (approx)
Overall Dimensions
72” H X 63” W X 55” D
Height-Floor to Tank Rim
35”
Maximum Part Height
17”
Maximum Water Temperature
180˚ F*
 
*
Ultrasonics will contribute to heat gain.
 
Materials of Construction 
• Stainless Steel tank, lid, lift platform, front
cover and skin