Graymills BTU Benchtop Ultrasonic - Manual (Page 2)

795-91322
09/24/08
Graymills Corporation – 3705 N. Lincoln Ave. / Chicago, IL 60613 – Phone: 773.477.4100 Fax: 773.477.8673 – www.graymills.com
OPERATION
INSTALLATION AND SETUP
1) Choose a well-lit, well-ventilated work area with clear access to the cleaning tank.
2) Place the unit on a level bench or platform capable of supporting the weight of the cleaning tank when filled with fluid and the
parts to be cleaned.
3) The bench surface should be resistant to the cleaning fluid used in the cleaner.
4) Be sure that the airflow openings at the bottom of the tank are not blocked.
5) A grounded 115VAC electrical outlet should be located near the cleaning tank.
Do NOT use an electrical extension cord to connect the cleaning tank to the power source. It is strongly
recommended that the electrical supply outlet be protected by a Ground Fault Circuit Interrupter (GFCI).
6) Provide an area near the cleaning tank for storage of the cleaning fluid used in your application. Refer to the APPLICATIONS
section for recommendations on the proper cleaning fluid for your application.
This ultrasonic cleaner is intended for use only with non-flammable cleaning fluids compatible with the stainless
steel cleaning tank. NEVER use a flammable or combustible fluid in this parts cleaner. Using a flammable or
combustible fluid in this equipment may produce a hazardous condition that can result in property damage or injury
to personnel.
This warning also applies to non-flammable fluids that have become contaminated with flammable or combustible
materials.
Refer to the APPLICATIONS section for recommendations on the proper cleaning fluid to use for your application. If
in doubt, contact the Graymills customer service department at (773) 248-6825 for cleaning fluid recommendations.
STARTUP
1) Be sure the ULTRASONIC GENERATOR and HEATER switches are in the OFF position. Check that the drain valve is
closed.
2) Fill the tank with the desired non-flammable, non-combustible cleaning fluid. DO NOT OVERFILL. Be sure to leave room
above the liquid level to immerse the workload without spilling over the top of the tank. A good policy is to leave a 1½”
minimum freeboard between the top of the fluid and the top of the tank with the workload fully immersed. This will reduce the
possibility of spillage.
3) Add the required cleaning chemicals to the water in the tank. Consult the cleaning fluid manufacturer’s literature and the
APPLICATIONS section of this manual to determine the proper amount of detergent to add. The detergent may be pre-mixed
with the water before filling the tank if desired. The amount of contaminants on the parts and the quality of the water in your
area will affect the amount of detergent concentrate to add. After cleaning a few typical parts, the detergent concentration may
be adjusted for best results.
4) Connect the power cord to the power outlet.
Never operate the tank heaters or the ultrasonics without at least 6” of liquid in the tank. Operating the ultrasonic
cleaner with a dry tank or with insufficient liquid will cause permanent damage to the heaters and/or the ultrasonic
transducers.
5) Set the temperature control dial to the desired operating temperature. Consult the cleaning fluid manufacturer’s literature and
the APPLICATIONS section of this manual for guidance in setting the proper temperature. The optimum cleaning fluid
temperature will be between 120º F. and 140º F.
6) Turn on the HEATER switch and allow the cleaning fluid to reach the set temperature.
7) Turn on the ULTRASONIC GENERATOR switch and allow the cleaning fluid to degas for several minutes. Refer to the
APPLICATIONS section of this manual for an explanation of the degassing process.
PARTS CLEANING
1) Place the contaminated parts in a free-draining basket and lower the workload into the ultrasonic tank. Parts may be
suspended in the tank by a hook or cable if that is more convenient.
Avoid placing parts directly on the tank bottom. Damage to the parts or the tank bottom may occur.
Retrieval of parts after cleaning is simplified if the parts are suspended in the cleaning fluid loaded in baskets or by
using a hook.
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