9821 Desco, 9821 Datasheet - Page 2

• Manufacturer Part Number: 9821
• Description: CORD CMMN GRND 10MM W/RES 10'
• Manufacturer: Desco

Specifications of 9821

• Accessory Type: Ground, Common Point - for Bench Mat with Resistor
• For Use With/related Products: 2 Banana Plug Wrist Straps
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 9820R

TB-2003 Page 2 of 2
Always Test the Ground
Before You Use It and
Periodically Thereafter
You should not assume that any electrical outlet
is properly wired. Even if it was originally wired
correctly, it can become ungrounded due to
corrosion and wear. Test the equipment ground
you intend to use before you hook up. Use
Desco 98130 AC Outlet Analyzer to verify proper
wiring of the electrical outlet (equiment ground).
Installation
After you have selected and tested your
grounding point, you will need to determine the
method of installation for the type of grounding
block that you have selected. Installation of
common point units as grounding blocks is
outlined below. Installation of the 09835/09836
and 09820/09821/09825/09826 as common
point ground cords for a work surfaces is also
discussed below.
WRIST STRAP GROUND CONNECTORS
1. Select the most convenient location on the
work bench for grounding of wrist straps and
other grounding devices.
2. Position the 09740/09741 or 09835/ 09836
and use the two #10 mounting holes to secure
to the work bench.
3. Bring the wire neatly back to your grounding
point. You may wish to use wire brackets to hold
the wire in place and out of the way. Cut and
strip the end of the wire to properly fit your
ground point. Install and crimp the extra ring
terminal provided.
Figure 8. Installation of grounding blocks.
4. To check resistance, use an ohmmeter from
the banana jacks to the common ground point. It
should read less than 1 Ohm AC impedance for
items 09740/09741, 09820/09825 and 09835
and 1 megohm (10
09821/09826.
GROUNDING POINT
As previously mentioned, the 09835/09836 and
the 09820/09821/09825/09826 can be installed
as a wrist strap ground connector for ESD
protective work surfaces.
1. Position or lay the work surface in the desired
location. Snap the ground to it. These units
connect with a 10mm socket snap.
2. Bring the other end of the ground cord to a
09740/09741
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Web Site: http://www.desco.com
6
ohms) for items 09836 and
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
09835/09836
Figure 9. Installing the 09835/09836 and
09820/09821/09825/09826 as a common point
ground cord for a work surface.
verified grounding point and attach it using the
ring terminal. Tie the ground wire to the bench to
keep it neatly out of the way. You may cut and
strip the ground wire to a shorter length and
attach it using the extra ring terminal included
with each ground cord.
3. After installation, the work surface along with
the banana jacks are all electrically connected to
ground. The banana jacks will now serve as
wrist strap ground connectors.
4. To check resistance, use an ohmmeter from
the ground point snap on the mat to the
common ground point. It should read 1 megohm
±20 percent if you are using a model 09836,
09821, or 09826 ground cord, and less than 1
Ohm AC impedance if you are using a 09835,
09820, or 09825 non-resistor ground cord.
MULTI GROUNDING HUB
The 09837 Multi Grounding Hub can be
mounted either on a bench leg or table top. See
Figure 10 for installation.
Figure 10. Installation of multi grounding hub.
Maintenance
You should set up a an auditing schedule to be
sure that all ESD grounds are inspected and
tested per your compliance verification plan
required by ANSI/ESD S20.20. Some
companies test once every six months.
09820/09821/09825/09826
09835/09836
09837
09837
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. 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 MERCHANT-
ABILITY AND FITNESS FOR A PARTICU-
LAR PURPOSE WHICH ARE SPECIFI-
CALLY 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.
© 2009 DESCO INDUSTRIES INC.
Employee Owned