EQUIPMENTO P E R A T I O N M A N U A L

®

Loctite®

ZETA® 7401 UV Chamber

98039

Contents

Page No.1 Please observe the following . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Emphasized Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 For Your Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3 List of Parts Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2 System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.1 Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 Installation and Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45.1 Controls and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

7 Care and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

8 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-88.1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.2 Spare Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

9 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Emphasized Sections

WARNING!Refers to safety regulations and required safety measures that protect the operator or other persons from injury or danger to life.

Caution!Emphasizes what must be done or avoided so that the unit or other property is not damaged.

Notice:Gives recommendations for better handling of the unit during operation or adjustment as well asfor service activities.

1.2 For Your Safety

IMPORTANT! DO NOT OPERATE THE UNIT BEFORE READING THIS SECTION.

The Loctite® ZETA® 7401 UV cure system is a source of long wavelength ultraviolet light used tocure light sensitive products. The system incorporates UV shielding and a non-reflective worksurface. It is safe when installed and used properly. The following guidelines should be followedat all times to ensure protection from the ultraviolet light.

1. UV protective glasses with side shields should be worn when working with and around thelamp system. Glasses should meet ANSI Z87.1 certification.

2. Potentially exposed skin should be covered. Long sleeves and protective gloves should beworn when placing and removing parts from under the lamp.

3. Never look directly at the output from the lamp or directly into the lamp/reflector.

4. Do not operate the ZETA® 7401 without cover in place and secured properly.

UV safety is the responsibility of the user, especially when operating the model ZETA® 7401 in anon-standard configuration. When in doubt about UV safety, consult a Loctite technical specialistat 1-800-LOCTITE (562-8483).

1.3 List of Parts Supplied• UV Chamber

• Power Cord

• UV Protective Eye wear

• Cotton Gloves

• Operators Manual

• Reusable Shipping Box and Foam Packaging

1

1 Please observe the following

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2 Description

2

2.1 Operation

The Loctite® ZETA® 7401 UV Chamber is designed for use in a wide range of bonding, potting,tacking, and sealing applications. Because of its reliability and simplicity, it is well suited for mostproduction operations.

The system irradiates medium power, long wave, ultraviolet light over an 8 x 8 inch work area.An optional visible light enhanced lamp is also available for use with Loctite® visible light curingproducts (refer to spare parts list, Section 8.2 ). The major components of the system include apower supply, reflector housing with lamp, parts drawer, and work surface. The work surface iscovered by a special silicone rubber mat which resists UV deterioration and chemical attack.Over time, it may soften and need replacement.

2.2 System Components

COVER

LAMP IGNITOR988174

LAMP97246

LAMP REFLECTOR985253

FAN984941

POWER SWITCH984764

HOUR METER

WORK PAD985298

PARTS DRAWER

LINEAR SLIDES985256

PLEXIGLASWINDOW985261

Figure 1

Side View

3

3 Technical Data

3.1 Specifications

Loctite Model: ZETA 7401

Loctite Part Number: 98039

Electrical Power Required: 120 VAC, 60 Hz single phase, 8 Amps maximum

Lamp Type, (visible and UV enhanced): 400 Watt Metal Halide

Dimensions L x W x H (inches): 18.5" x 10.75" x 10.5"

Total Weight 39 Pounds

4 Installation

4.1 Unpacking and Inspection

Carefully remove the system from its shipping carton and inspect it for any signs of damage.Any damage should be reported immediately to the carrier. Refer to the list of supplied parts(section 1.3) compare contents received to list of parts supplied. Report any missing partspromptly to the Loctite customer service department at 1-800-LOCTITE (562-8483).

4.2 Installation and Start-up

The Loctite® ZETA® 7401 UV curing system will arrive completely assembled. All that is requiredis to plug in the power cord to the rear of the power supply. The system should be positioned toallow at least six inches clearance on all sides for adequate ventilation.

Be sure to wear UV protective glasses and gloves at all times while operating the system.A pair of each is supplied with the unit. To energize the system turn the power switch on andallow 5 minutes for the lamp to reach full power. To maximize lamp life, the unit should be keptunder power without frequent on/off cycling. It is suggested that the lamp remain on during workbreaks. The lamp should be allowed to operate a minimum of 15 minutes before turning thesystem off. Once off, a minimum of 5 minutes cooling time is required before restarting.

The position and exposure time required to complete the curing process must be determinedinitially by testing cure time with an actual part.

4

5 Operation

5.1 Controls and Operation

The Zeta® 7401 system is easy to use and requires only that the power be switched on tooperate. A panel meter is located on the back of the power supply to keep track of the operatingtime accumulated on the unit. A new lamp should be installed at 1,000 hour intervals. If the lampis replaced in anything other than 1,000 hour increments, a record of the last hour meter readingshould be kept.

Parts should be centered in the parts drawer when curing.

UV lamps also emit heat energy that is usually insignificant, however, if heat sensitive parts arebeing processed, a sample part should be tested by exposing it to a cure cycle. Reducing theamount of time the part is in the drawer will limit the part heating.

The UV power should be monitored regularly using a radiometer (Loctite® 98001). A readingshould be taken when the new lamp is first ignited so subsequent changes in the UV output canbe identified. Measurements should be made using the same type of radiometer, and preferablythe exact same instrument.

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5

Symptom Corrective Action/Possible Cause

Lamp does not light, power switch 1. Make sure the system is plugged in.does not light, and fans do not start. 2. Check the fuse in the power cord receptacle.

Lamp does not light, power 1. Make sure that the lamp is plugged in.switch lights, fans are running. 2. Lamp is at end of its life.

3. Check that the connector cord is properly installed at both ends.

UV Output is low, 1. Reflector needs to be cleaned.(Radiometer Reading) 2. Lamp is at end of its life.

3. Lamp needs to be cleaned.4. Check radiometer accuracy, calibration.

Poor or Slow Cure Results 1. UV output is low, (see above).2. Product is not compatible with the lamp type.3. Position lamp closer to the part.

6 Troubleshooting

6

7 Care and Maintenance

7.1 Maintenance

UNPLUG POWER CORD FROM WALL OUTLET AND DISCONNECT FROM UNIT BEFOREANY MAINTENANCE IS ATTEMPTED.

Reflector

Clean the aluminum reflector every four months or as required.

After disconnecting power and allowing the lamp to cool, the reflector is accessed by removingthe chamber cover. Next remove the four screws holding the reflector. Use Isopropyl alcohol anda clean, soft cloth to clean the reflector.

Lamp and Sockets

Inspect the lamp sockets when installing a new lamp and replace if corroded. Heat generated bypoor connections can reduce lamp life.

Lamp should be replaced as required. It is recommended that the lamp output be monitoredregularly with a radiometer to insure that the product is being completely cured. The Loctite®

Zeta® Meter 7010 (part number 98001) can be used to monitor performance. As an alternative,regular inspection of the cured product may provide an indirect and less accurate measure oflamp function. If a radiometer is not used to track lamp life, the lamp should be replaced at leastafter every 1,000 hours of operation.

To remove the lamp, first disconnect power from unit and allow lamp to cool. Next remove thechamber cover by removing the four retaining screws. The reflector assembly is now visible.Remove the four screws holding the reflector lamp assembly and invert the reflector, set down inplace, being careful not to damage the lamp holders or dent the reflector.

When handling the lamp, cotton gloves or a soft cloth should be used. Do not touch the lamp with bare hands or fingers, the oil form your hands will cause the lamp to fail prematurely.

Grasp the ends of the lamp, near the socket to remove it. Inspect the new quartz lamp envelopefor cleanliness. If necessary, clean the lamp with isopropyl alcohol and a soft cloth. Insert thenew lamp into the sockets, grasping it only at the ends. Reinstall the reflector and the fourscrews. Replace the chamber cover and the four retaining screws.

Work Surface

If the work surface becomes coated with adhesive or cracks, a new work surface pad can beinstalled. The part number for the work surface pad is # 985298.

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7

8 Documentation

8.1 Wiring Diagram

together before

Black

White

Fuse

Chassis

Fan

TB1

Power

240

COM

120

208

ChassisNut Connection

Use Crimp capsfor unused inputsand tywrap together.

277

Crimp connector

COM

CAP

CAP

tightening screw.inserting and

use mechanicalcrimp to hold wires

Lamp

Hourmeter

TB2

B L Np

LampBallast

Figure 2

8

8 Documentation (continued)

8.2 Spare Parts

Item Part Number

UV Enhanced Metal Halide Lamp 97246

Visible Light Enhanced Metal Halide Lamp 983050

UV Safety Glasses 97210

Pair of Cotton Gloves 984070

Adhesive-Backed Work Surface Pad 985298

ZETA® 7401 Manual 985274

Lamp Ignitor 988174

Lamp Holder Socket 980872

Reflector 985253

Cooling Fan 984941

Illuminated Switch 984764

Linear Slides 985256

Plexiglas Viewing Window 985261

9

9 Warranty

Loctite expressly warrants that all products referred to in this Instruction Manual for the ZETA®

7401 UV Curing Flood System (hereafter called “Products”) shall be free from defects inmaterials and workmanship. Liability for Loctite shall be limited, as its option, to replacing thoseProducts which are shown to be defective in either materials or workmanship or to credit thepurchaser the amount of the purchase price thereof (plus freight and insurance charges paidtherefor by the user). The purchaser’s sole and exclusive remedy for breach of warranty shall besuch replacement or credit.

A claim of defect in materials or workmanship in any Products shall be allowed only when it issubmitted in writing within one month after discovery of the defect or after the time the defectshould reasonably have been discovered and in any event, within 12 months after the deliveryof the Products to the purchaser. This warranty does not apply to perishable items, such asfuses etc. No such claim shall be allowed in respect of products which have been neglected orimproperly stored, transported, handled, installed, connected, operated, used or maintained. In the event of unauthorized modification of the Products including, where products, parts orattachments for use in connection with the Products are available from Loctite, the use ofproducts, parts or attachments which are not manufactured by Loctite, no claim shall be allowed.

No Products shall be returned to Loctite for any reason without prior written approval fromLoctite. Products shall be returned freight prepaid, in accordance with instructions from Loctite.

NO WARRANTY IS EXTENDED TO ANY EQUIPMENT WHICH HAS BEEN ALTERED,MISUSED, NEGLECTED, OR DAMAGED BY ACCIDENT, OR IF THE SYSTEM USED TODISPENSE ANY LIQUID MATERIAL OTHER THAN LOCTITE PRODUCTS.

EXCEPT FOR THE EXPRESS WARRANTY CONTAINED IN THIS SECTION, LOCTITEMAKES NO WARRANTY OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, WITHRESPECT TO THE PRODUCTS.

ALL WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ANDOTHER WARRANTIES OF WHATEVER KIND (INCLUDING AGAINST PATENT ORTRADEMARK INFRINGEMENT) ARE HEREBY DISCLAIMED BY LOCTITE AND WAIVED BYTHE PURCHASER.

THIS SECTION SETS FORTH EXCLUSIVELY ALL OF LIABILITY FOR LOCTITE TO THEPURCHASER IN CONTRACT, IN TORT OR OTHERWISE IN THE EVENT OF DEFECTIVEPRODUCTS.

WITHOUT LIMITATION OF THE FOREGOING, TO THE FULLEST EXTENT POSSIBLEUNDER APPLICABLE LAWS, LOCTITE EXPRESSLY DISCLAIMS ANY LIABILITYWHATSOEVER FOR ANY DAMAGES INCURRED DIRECTLY OR INDIRECTLY INCONNECTION WITH THE SALE OR USE OF, OR OTHERWISE IN CONNECTION WITH, THEPRODUCTS, INCLUDING, WITHOUT LIMITATION, LOSS OF PROFITS AND SPECIAL,INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER CAUSED BY NEGLIGENCE FROMLOCTITE OR OTHERWISE.

Loctite Corporation1001 Trout Brook CrossingRocky Hill, CT 06067-3910

Loctite Automotive Technology Center2455 Featherstone RoadAuburn Hills, Michigan 48326

Loctite Canada Inc.2225 Meadowpine Blvd.Mississauga, Ontario L5N 7P2

Loctite Company de México, S.A. de C.V.Calzada de la Viga s/n, Fracc. Los LaurelesLoc. Tulpetlac, C.P. 55090Ecatepac de Morelos, Edo. de MéxicoMéxico

Loctite BrazilAv. Prof. Vernon Krieble, 9106690-11-ItapeviSão Paulo-Brazil

www.loctite.com

Loctite is a trademark of Loctite Corporation, U.S.A.© Copyright 2001. Loctite Corporation. All rights reserved. Data in this manual is subject to change without notice.P/N: 985274 Rev B, 08/2007 A Company

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