Chicago Electric 91957 User Manual

®

1.5 QUART HEAVY DUTY
STAINLESS STEEL

ULTRASONIC CLEANER

91957

ASSEMBLY & OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web Site at www.harborfreight.com

Copyright© 2004 by Harbor Freight Tools®. All rights reserved. No portion of this manual or
any artwork contained herein may be reproduced in any shape or form without the
express written consent of Harbor Freight Tools.

For technical questions and replacement parts please call 1-800-444-3353.

THANK YOU for choosing a HARBOR FREIGHT TOOLS product. For future reference, please

complete the owner’s record below:

Model

______________ Serial No._____________ Purchase Date_______________

SAVE THE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the
entire manual to become familiar with the unit BEFORE you begin assembly.

Technical Specifications

Material: Industrial Grade Stainless Steel
Overall Dimensions: 9.3" H x 10.3" L x 6.3" Deep
Tank Size: 4" Deep x 9" L x 5.25" W
Type Fuse: 3 Amp up to 250 V fuse (F3A 250V)

The Heavy Duty 1.5 Quart Stainless Steel Ultrasonic Cleaner can be used for cleaning
jewelry, metal products such as nozzles and valves, and tools. Not to be used for medical
purposes or medical sanitizing.

Safety Warnings and Precautions
WARNING: When using product, basic safety precautions should always be followed to
reduce the risk of personal injury and damage to equipment.

Read all instructions before using this product!

WORK AREA

1. Keep your work area clean and well lit. Cluttered benches and dark areas invite

accidents.

2. Do not operate the Ultrasonic Cleaner in explosive atmospheres, such as in the

presence of flammable liquids, gases, or dust. Electrical products create sparks which
may ignite the dust or fumes.

3. Keep bystanders, children, and visitors away while operating the Ultrasonic Cleaner.

Distractions can cause you to lose control.

ELECTRICAL SAFETY

4. This product has a 3-prong electrical plug, and must be plugged into an outlet

properly installed and grounded in accordance with all codes and ordinances. Never
remove the grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is
properly grounded. If a grounded prouct should electrically malfunction or break down,

grounding provides a low resistance path to carry electricity away from the user.

5. Double insulated products are equipped with a polarized plug (one blade is wider

than the other). This plug will fit in a polarized outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified
electrician to install a polarized outlet. Do not change the plug in any way.

Double insulation eliminates the need for the three wire grounded power cord and
grounded power supply system.

SKU 91957 For technical questions, please call 1-800-444-3353. Page 2

6. Avoid body contact with grounded surfaces such as pipes, radiators, ranges, and
refrigerators. There is an increased risk of electric shock if your body is grounded.

7. Do not abuse the Power Cord. Never use the Power Cord to carry the Ultrasonic
Cleaner or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immediately. Damaged

Power Cords increase the risk of electric shock.

8. When operating a power tool outside, use an outdoor extension cord marked “W-A”
or “W”. These extension cords are rated for outdoor use, and reduce the risk of electric
shock.

PERSONAL SAFETY

9. Stay alert. Watch what you are doing, and use common sense when operating the
Ultrasonic Cleaner. Do not operate this porduct while tired or under the influence of
drugs, alcohol, or medication. A moment of inattention while operating the Ultrasonic

Cleaner may result in serious personal injury.

10. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your
hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair
can be caught in moving parts.

11. Avoid accidental starting. Be sure the Power Switch is off before plugging in.
Carrying appliances with your finger on the Power Switch, or plugging in appliances with
the Power Switch on, invites accidents.

12. Remove adjusting keys or wrenches before turning the Ultrasonic Cleaner on. A
wrench or a key that is left attached to a rotating part of the Ultrasonic Cleaner may result in
personal injury.

13. Do not overreach. Keep proper footing and balance at all times. Proper footing and
balance enables better control of the power tool in unexpected situations.

14. Use safety equipment. Always wear eye protection. Dust mask, non-skid safety shoes,
hard hat, or hearing protection must be used for appropriate conditions. Wear full face shield
to protect against chemical splashing.

TOOL USE AND CARE

15. Do not overload the Ultrasonic Cleaner. Use the correct Ultrasonic Cleaner for your

application. The Ultrasonic Cleaner will do the job better and safer at the speed and capa-

city for which it is designed.

16. Do not use the Ultrasonic Cleaner if the Power Switch does not turn it on or off. Any
appliance that cannot be controlled with the Power Switch is dangerous and must be
replaced.

SKU 91957 For technical questions, please call 1-800-444-3353. Page 3

17. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the Ultrasonic Cleaner. Such preventive

safety measures reduce the risk of turning on the product accidentally.

18. Store idle tools out of reach of children and other untrained persons. Tools are
dangerous in the hands of untrained and unsuprised users.

19. Maintain the Ultrasonic Cleaner with care. Do not use a damaged Ultrasonic Cleaner.
Tag damaged Ultrasonic Cleaner “Do not use” until repaired.

20. Check for misalignment or binding of moving parts, breakage of parts, and

any other condition that may affect the Cleaner’s operation. If damaged, have the
Cleaner serviced before using. Many accidents are caused by poorly maintained

appliances.

SERVICE

21. Ultrasonic Cleaner service must be performed only by qualified repair personnel.
Service or maintenance performed by unqualified personnel could result in a risk of injury.

22. When servicing the Ultrasonic Cleaner, use only identical replacement parts. Follow

instructions in the

“Inspection, Maintenance, And Cleaning”

section of this manual.

Use of unauthorized parts or failure to follow maintenance instructions may create a risk of
electric shock or injury.

23. Always unplug the Ultrasonic Cleaner from its electrical outlet before performing any

inspection, maintenance, or cleaning procedures.

24. WARNING! People with pacemakers should consult their physician(s) before using
this product. Operation of electrical equipment in close proximity to a heart
pacemaker could cause interference or failure of the pacemaker.

FIGURE A

DOUBLE INSULATED APPLIANCES: APPLIANCES WITH TWO PRONG PLUGS

SKU 91957 For technical questions, please call 1-800-444-3353. Page 4

1. Appliances marked “Double Insulated” do not require grounding. They have a special double
insulation system which satisfies OSHA requirements and complies with the applicable
standards of Underwriters Laboratories, Inc., the Canadian Standard Association, and the
National Electrical Code. (See Figure B.)

2. Double insulated tools may be used in either of the 120 volt outlets shown in the following
illustration. (See Figure B.)

FIGURE B

EXTENSION CORDS

1.

Grounded

appliances require a three wire extension cord.

Double Insulated

products can

use either a two or three wire extension cord.

2. As the distance from the supply outlet increases, you must use a heavier gauge extension
cord. Using extension cords with inadequately sized wire causes a serious drop in voltage,
resulting in loss of power and possible tool damage. (See Figure C, next page.)

3. The smaller the gauge number of the wire, the greater the capacity of the cord. For example,
a 14 gauge cord can carry a higher current than a 16 gauge cord. (See Figure C.)

4. When using more than one extension cord to make up the total length, make sure each cord
contains at least the minimum wire size required. (See Figure C.)

5. If you are using one extension cord for more than one tool, add the nameplate amperes and
use the sum to determine the required minimum cord size. (See Figure C.)

6. If you are using an extension cord outdoors, make sure it is marked with the suffix “W-A”
(“W” in Canada) to indicate it is acceptable for outdoor use.

7. Make sure your extension cord is properly wired and in good electrical condition. Always
replace a damaged extension cord or have it repaired by a qualified electrician before using
it.

8. Protect your extension cords from sharp objects, excessive heat, and damp or wet areas.

SKU 91957 For technical questions, please call 1-800-444-3353. Page 5

FIGURE C

6

SPECIFIC PRODUCT WARNINGS AND PRECAUTIONS

1. Never use volatile solvents to clean objects in the Ultrasonic Cleaner. Never use
gasoline or other flammable liquids.

2. Maintain labels and nameplates on the Ultrasonic Cleaner. These carry important
information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

3. Always wear ANSI approved safety goggles when using the Ultrasonic Cleaner. Using
personal safety devices reduce the risk for injury. Wear full face shield to protect against
chemical splashing.

4. Maintain a safe working environment. Keep the work area well lit. Make sure there is
adequate surrounding workspace. Always keep the work area free of obstructions, grease,
oil, trash, and other debris. Do not use the Ultrasonic Cleaner in areas near flammable
chemicals, dusts, and vapors. Do not use this product in a damp or wet location.

5. Avoid unintentional starting. Make sure you are prepared to begin work before turning on
the Ultrasonic Cleaner.

6. Never leave the Ultrasonic Cleaner unattended when it is plugged into an electrical
outlet. Turn off the Ultrasonic Cleaner, and unplug it from its electrical outlet before leaving
the work area.

7. Never immerse the Ultrasonic Cleaner in liquid.

8. Do not place or store the Stainless Steel Ultrasonic Cleaner where it can fall or be

pulled into a tub, sink or other free-standing pool of water.

9. Do not submerse non-waterproof products into the water.

10. Do not use for medical purposes or medical sanitizing.

SKU 91957 For technical questions, please call 1-800-444-3353. Page 6

11. Do not use penetrating oils in the Cleaner as they may damage the Cleaner and any
materials being cleaned.

12. Do not overfill the Cleaner. Use water only to the fill line when filling the tank.

13. Do not clean multiple objects at a time. Using many objects in the tank at one time

will cause them to bang against one another, damaging both the articles being
cleaned and the tank.

14. Use only lukewarm water. Excessively hot water will damage the transducer.

15. Never use a cleaning agent that would bubble or suds up over the edge of the

cleaning tank.

WARNING: The warnings, cautions, and instructions discussed in this instruction manual cannot

cover all possible conditions and situations that may occur. It must be understood by
the operator that common sense and caution are factors which cannot be built into
this product, but must be supplied by the operator.

Assembly/ Operation

Your Heavy Duty Ultrasonic Cleaner comes completely assembled. It is important that you read the
entire manual to become familiar with the product BEFORE you use the Ultrasonic Cleaner. Before
using the Ultrasonic Cleaner be sure that you have all parts described in the Parts List and
Assembly Diagram located on the last pages of this manual.

USE WATER OR A WATER/SOAP SOLUTION TO CLEAN OBJECTS IN THE
ULTRASONIC CLEANER. FAILURE TO FILL THE ULTRASONIC CLEANER WITH
WATER OR A WATER/SOAP SOLUTION BEFORE USING WILL SEVERELY DAMAGE
IT AND VOID THE WARRANTY.

1. Make certain that the Cleaner ON/OFF Switch is in the “OFF” position. Make certain that the
Cleaner is unplugged.

2. Fill the tank to the fill line with water or water/soap solution - see Figure 1. Use water that is
lukewarm. Excessively hot fluid will damage the Transducer (7).

3. Set the grill in the bottom of the Tank, then place the item(s) to be cleaned on the grill. (Do
not place items directly on hte Tank bottom, this may damage the transducers.)

SKU 91957 For technical questions, please call 1-800-444-3353. Page 7

Revised 07f

Figure 1

Wire Grate (9)

fill line

Start Button (4)

Power Switch (6)

Timer (5)

4. First plug in the Ultrasonic Cleaner. Turn “ON” the power by pushing the Power Switch (6) to
the ON (marked “I”) position. To turn the power “OFF” at any time, press the Power
Switch (6) to the “OFF” position (marked “o”)-see Figure 2.

5. The Ultrasonic Cleaner is equipped with a Timer (5) which can be set from 0 to 60 minutes­see Figure 3. Depending on the extent of the dirt on the article, and the intricacy of the
article being cleaned, set the Timer (5) up to 60 minutes.

6. On some occasions, the initial cleaning may not adequately clean the article. A second
period of cleaning usually finishes the cleaning process. Pressing the green Start Button (4)
will restart the cycle according to the setting previously indicated on the Timer (5)-see
Figure 2.

Timer (5)

Start
Button (4)

Figure 2-Control Panel

Power Switch (6)

Figure 3-Timer Dial

Timer (5)

SKU 91957 For technical questions, please call 1-800-444-3353. Page 8

Replacing the Fuse

The Ultrasonic Cleaner has a Fuse (10). If everything appears to be in good condition, and yet the
Ultrasonic Cleaner is not working or functioning properly, check the Fuse (10). The Ultrasonic
Cleaner uses a 3 Amp up to 250 V fuse (F3A 250V). It is located on the rear of the Ultrasonic
Cleaner, under the Fuse cover, above the Power Cord-see Figure 4 next page.

NOTE: Overheating the Ultrasonic Cleaner will blow the Fuse.

1. Make certain all power is “OFF” and that the Ultrasonic Cleaner is unplugged. Remove the
Fuse Cover (11). If the Fuse Cover (11) does not easily come off, use Needle Nosed Pliers
to grasp the Fuse Cover (11). Turn counterclockwise to loosen and remove.

2. Grasp the Fuse (10) and pull it from its housing and insert a replacement Fuse (10).
Replace the Fuse Cover by installing and turning clockwise until securely in place. Do not
overtighten.

Figure 4
Replacing the Fuse

Fuse Cover

Fuse
(10)

Inspection, Maintenance and Cleaning

1. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive safety

measures reduce the risk of electric shock.

2. Before each use inspect the general condition of the Ultrasonic Cleaner. Check for loose
screws, misalignment or binding of moving parts, cracked or broken parts, damaged power
plug/Cord and any other condition that may affect the safe operation of the Ultrasonic
Cleaner. If abnormal noise or vibration occurs, immediately disconnect the Ultrasonic
Cleaner form its electrical supply source and have the problem corrected before further use.
DO NOT USE DAMAGED EQUIPMENT.

3. Servicing of internal components should only be done by a qualified service technician.

4. Clean the Ultrasonic Cleaners’ water tank with a damp cloth. Remove any oil and residue
after each use. Do not clean with flammable or corrosive liquids.

SKU 91957 For technical questions, please call 1-800-444-3353. Page 9

Unpacking

When unpacking the 1.5 Quart Heavy Duty Ultrasonic Cleaner, check to make sure the following
parts are included. If any parts are missing or broken, please call HARBOR FREIGHT TOOLS at

1-800-444-3353.

Parts List

Part # Description Quantity Part # Description Quantity

1 Voltage Transformer Nut 8 m 7 Transducer 2
2 Board 1 8 Cylinder Block 1
3 Power Transistor 1 9 Wire Grid 1
4 Start Button 1 10 Fuse-F3A 250V 1
5 Timer 1 11 Fuse Cover 1
6 Power Switch 1

Note: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.

Parts and Assembly Diagram

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and du rability
standards, and warrants to the original purchaser that this product is free from defects in materials and
workmanship for the period of one year from the date of purchase. This warranty does not apply to
damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside
our facilities, or to lack of maintenance. We shall in no event be liable for death, injuries to persons or
property, or for incidental, contingent, special or consequential damages arising from the use of our
product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation of exclusion may not apply to you.

To take advantage of this warranty, the product or part must be returned to us with transport ation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you specific legal rights and you may also have other rights which vary from state to
state.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS
PROVIDED THE PARTS DIAGRAM IN THIS MANUAL
AS A REFERENCE TOOL ONLY. NEITHER THE
MANUFACTURER NOR DISTRIBUTOR MAKES ANY
REPRESENTATION OR WARRANTY OF ANY KIND
TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
MAKE ANY REPAIRS TO THE PRODUCT OR THAT
HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS
OF THE PRODUCT. IN FACT, THE MANUFACTURER
AND/OR DISTRIBUTOR EXPRESSLY STATES THAT
ALL REPAIRS AND PARTS REPLACEMENTS
SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS AND NOT BY THE BUYER.
THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS
THERETO.

LIMITED 1 YEAR
WARRANTY

REV 02/06; 07d

SKU 91957 For technical questions, please call 1-800-444-3353. Page 10