TB-2000 Page 4 of 4

Figure 14. Hooking up ground cords.

4. If your installation includes a floor mat, you should duplicate

step 2 and attach the floor mat ground to the same point as the

worksurface ground wire.

5. Measure the resistance from the ground snap on the mat to

the common ground point. It should read 1 megohm ± 20

percent if you are using a ground cord with a resistor, and less

than 1 ohm if you are using a non-resistor ground cord.

6. Using a surface resistance tester per ESD TR53, test the

resistance to ground from the center of the mat surface.

Required equipment: a megohmmeter with 100 volt open test

circuit voltage and two five pound electrodes per ASTM-150.

Desco sells this as the Digital Surface Resistance Test Kit,

item #19780. For more information on the 19780, ask for

Technical Bulletin TB-3014.

Limited Warranty

Desco expressly warrants that for a period of one (1) year from the

date of purchase, Desco grounding products will be free of defects in

material (parts) and workmanship (labor). Within the warranty period, the

product will be tested, repaired, or replaced at Desco’s option, free of

charge. Call our Customer Service Department at 909-627-8178 (Chino,

CA) or 781-821-8370 (Canton, MA) for a Return Material Authorization

(RMA) and proper shipping instructions and address. Include a copy of

your original packing slip, invoice, or other proof of purchase date. Any

unit under warranty should be shipped prepaid to the Desco factory.

Warranty repairs will take approximately two weeks.

If your unit is out of warranty call Customer Service at 909-627-8178

(Chino, CA) or 781-821-8370 (Canton, MA) for a Return Material

Authorization (RMA) and proper shipping instructions and address. Ship

your unit freight prepaid and Desco will quote repair charges necessary

to bring your unit up to factory standards.

Warranty Exclusions

THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF

ALL OTHER PRODUCT WARRANTIES, EXPRESSED AND IMPLIED,

INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express

warranty will not apply to defects or damage due to accidents, neglect,

misuse, alterations, operator error, or failure to properly maintain, clean

or repair products.

Limit of Liability

In no event will Desco or any seller be responsible or liable for any

injury, loss or damage, direct or consequential, arising out of the use of

or the inability to use the product. Before using, users shall determine

the suitability of the product for their intended use, and users assume all

risk and liability whatsoever in connection therewith.

DESCO WEST

- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178

DESCO EAST - One Colgate Way

, Canton, MA 02021-1407 • (781) 821-8370 • Web Site: Desco.com

Figure 13. Installing 09814 to mat using supplied hardware.

Mat Installation - General Information

1. For best results, allow the mats to lay flat for about four

hours at room temperature before installing. This will give the

material time to flatten out from being rolled for shipment.

2. Test grounds for proper resistance to ground. See Desco

Technical Bulletin TB-2007 for a complete discussion of

grounds.

3. Lay the mat in position and snap the ground cord to it. Bring

the other end of the ground cord to the common ground point

and attach it using the ring terminal. A suggested ground point

is the center screw of a standard AC electrical outlet. Testing is

recommended to ensure that the screw is properly grounded.

Tie the ground wire to the bench to keep it out of the way and

neat. You may cut and strip the ground wire to a shorter length

and attach it with the extra ring terminal included with each

Desco ground cord.

Figure 15. Adding the wriststrap.

BE SURE YOU TEST ALL GROUNDS AND THE WRIST STRAP

FREQUENTLY.

The following bulletins are available from Desco:

TB-2004 Operation of 19350 Wrist Strap Tester

TB-2005 Wrist Straps, Grounding, Testing, Maintenance

TB-2007 Safe Grounding of Static Controlled Workstations

Maintenance and Cleaning

For optimum electrical performance, Desco recommends for

work surface mats our Reztore™ Surface and Mat cleaner, item

#10435, and for floor mats our Statguard® Floor Mat cleaner,

item #10443. DO NOT USE CLEANERS WITH SILICONE. They

will build up a silicone coating on the surface which will cause

the surface to become an insulator. Many common household

cleaners contain silicone.

09825/09826

“GREEN WIRE”

UTILITY

GROUND

POINTS

RING

TERMINAL

CAN BE

ATTACHED

HERE

© 2012 DESCO INDUSTRIES INC.

Employee Owned

7. If you are using a mat kit that includes the wrist strap, install

the wrist strap directly to the common point mat ground cord

banana jack. Again, test the resistance from the backplate of

the wrist strap to the common ground point. It should read 1

Megohm ± 20 percent.

6. The 09813 / 09814 mat ground cord may be either attached to

a mat by snapping onto a 10mm socket, or by bolting it to the

mat with the hardware supplied with the cord. When bolting

the 09814 to the mat use a 3/8" diameter hole punch to create

the hole for mounting. This will allow cord to sit flush on the

mat. Note: For both applications, remove screw from floor mat

ground before attaching to mat.