Esma E188T User manual

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ESMA Inc.
PO Box 734 450 W. Taft Drive
South Holland, IL 60473
708-331-1855 800-276-2466 FAX [phone]
Instructions for
Model E188T
9 Gallon Ultrasonic Cleaner
Introduction
The Model E188 ultrasonic cleaner combines 900 watts of ultrasonic
power with various cleaning solutions to effectively handle your cleaning
re uirements. The E188 cleaning unit can be combined with Model
E288, 9 gallon ultrasonic rinsing unit and with E388, 9 gallon drying
unit for a complete system where parts are ultrasonically cleaned,
ultrasonically rinsed, and hot air dried. These three models are housed
in the same size cabinet.
Unit E188 consists of two components: a 316 SS tank housed in a
stainless cabinet and a stainless power module containing the bulk of
the electronics.
The tank has 18 potting transducers mounted on the bottom and is
e uipped with a ball valve for draining. Heaters can be installed on tank
as an option.
The Power Module contains the self-tuning modular circuit boards, high
velocity fans to cool the electronics, and an RFI filter to eliminate high
fre uency noise feedback.
PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLATION AND
OPERATION. If there are any uestions, call [phone].

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Installation
Place tank on a bench close to a sink or drain. The power module can be
placed up to 10 feet away from tank, either on a shelf or in a cabinet.
The power module should not be positioned where it can be splashed
with li uids, where it can attract dirt or abrasives, or where the air
cooling by the fan can be restricted because of tight enclosures.
Clearance of 1’’ is necessary both at the air intake and exhaust.
Fill tank with approximately 8’’ of li uid. NEVER OPERATE UNIT
WITHOUT LIQUID IN TANK.
Electrical
The unit is rated at 1450 watts, 120 VAC, 50/60 HZ. Only the power
module is plugged into 120 VAC supply. Two plug and cord assemblies
from tank cabinet are plugged into power module.
The unit must be electrically grounded. Connect to a three-way
grounded outlet. A fuse, 15amp-125V, is located on the power module
cabinet.
Tumbler Basket
The 15” x 10” diameter octagon shaped basket is made from 5/32”
diameter perforated stainless. The door of the basket is fastened shut
with four wing nuts. This basket is for demo purposes only. The mesh
size can be changed and the door can be hinged.
Operation
The MAIN switch on power module is left ON during daily operation.
Parts to be cleaned are placed in a rack and rack is positioned into the
ultrasonic tank. Never place parts directly on bottom of tank (tank could
eventually be perforated).

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1. Heater – Tank is supplied with 450 watts of heat controlled by an
adjustable, internal thermo-switch. The thermo-switch has been
adjusted to control the bath temperature at 120degrees F when tank
covers are on. If temperature needs to be changed:
oDisconnect unit from 120Voutlet.
oRemove back panel.
oMove control knob of thermostat slightly in clockwise
direction to increase temperature and counter-clockwise to
decrease temperature. Make only slight changes because a
30degree angle change corresponds to an approximate
20degrees F temperature change. Replace top plate on
chamber. Use caution that the bath temperature does not
exceed 180degrees F.
2. Timer – The unit has been e uipped with an Esma digital timer. The
timer is preset at 15 minutes. To change the time simply press the ↑
or ↓ buttons accordingly. Press the Start/Stop button to activate the
timer. Once the timer is running, pressing the Start/Stop button will
stop the ultrasonics. Pressing the Start/Stop button again will
resume the ultrasonics.
3. Tumbler
•Timer position- ON only with timer.
•Continuous position- ON with main switch.

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Procedure
1. Fill basket with parts.
2. The tank should be filled with heated cleaning solution.
3. Insert basket into tank. To make sure sprocket is engaged in drive
chain, switch timer motor to Continuous to turn basket for at least
one revolution. You may want to leave basket tumbling at all times.
4. Ultrasonically clean for 10-15 minutes while tumbling.
5. When the cleaning cycle is completed, turn tumbler ON until
handle of basket is on top of unit. Shut tumbler OFF and remove
basket with parts.
Maintenance
Periodically, the ultrasonic cleaning solution in the tank must be
changed:
•Unplug the unit from 115VAC outlet.
•Drain li uid into a container or sink by opening the valve at rear
of unit.
•After tank is empty, flush out tank and drain it.
•Wipe tank clean and dry.
•Close drain valve and add fresh solution.
The cabinet is made of 304 stainless steel. Clean with a commercially
available cleaner for stainless kitchen appliances.
The unit is guaranteed for one year, circuit boards for two years and
transducer bonds and tank weld seams have a lifetime guarantee.
Modular Circuit Board
Unit E188 is e uipped with three modular circuit boards that are easily
replaced if a problem occurs. Three small indicator lights on the power
module indicate that the circuit boards are working. If the ultrasonic

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action in the tank decreases or one of the circuit board indicator lights
goes out, call us and a replacement circuit board will be shipped
immediately. This way the need for shipping the unit back for repairs is
eliminated and the disruption is minimal.