Celebrating over 30 years of excellence in manufacturing ultrasonic cleaning
equipment, electropolishing equipment and associated chemistries
ESMA, Inc.
P. O. BOX 734 * SOUTH HOLLAND, IL 60473 * (800)-276-2466 * FAX (708)331-8919
Instructions for Ultrasonic Washer
E789 (U.L. Approved)
1. INTRODUCTION
The E789 Automatic Ultrasonic Washer automatically performs a cleaning
cycle, the major steps of which are:
• Ultrasonic cleaning
• Ultrasonic rinsing (hot tap water)
• Hot air drying
The E789 unit has a primary rinse solenoid, which is connected to the hot tap
water supply. The E789 is equipped with a chemical metering pump for
precision distribution of the exact amount of liquid detergent concentrate. Use
only Esma brand detergent concentrates when operating the E789 with
metering pump. The result is a finished product ready for the next step
(sterilizing, packaging, assembly, storage). The unit consists of four sections:
1) Tank Module-to be installed in the counter 2) Control Module-to be
installed in front of counter 3) Power Module to be installed under the counter
and 4) Metering Pump which is to be located under counter.
The Tank Module is manufactured from 316 stainless steel with 12 potting
transducers mounted on the bottom. The tank is equipped with two fill
solenoids (E789 has only one), a drain solenoid and a low level control to
prevent electronic damage if water pressure is lost. The tank is fitted with a
304 stainless hinged cover housing the fan and heater for air-drying.
The Control Module is manufactured from 304 stainless and contains the
switches to start the FILL, CLEAN or FULL CYCLE cycles and stop the process
manually, if needed.
The Power Module contains the self-tuning modular circuit boards,
programmable controller, high velocity fan to cool the electronics and RFI filter
to eliminate high frequency noise.
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