Desco Combo Tester X3 Installation, Operation And Maintenance Manual

Combo Tester X
Installation, Operation and Maintenance
Figure 1. Desco Combo Tester X3 and Dual Foot Plate

Description

The Desco 19276/19277 Combo Tester X3 simultaneously tests
an operator's wrist strap and footwear to determine that the wrist
strap and/or foot wear will act as a path to ground; and it tests the
presence of an inline 1 Megohm resistor. This product can be
used as one of the tools to fulfill the ANSI ESD S20.20 paragraph
6.1.3.2 "Compliance Verification Plan. Verification should include
routine checks of the Technical Requirements of the Plan." The
Combo Tester X3 incorporates a test circuit design that allows
operators to test their wrist strap and foot wear simultaneously
and eliminates the need to conduct separate tests. The Combo
Tester X3 is factory set to 750 kilohm - 10 megohm for wrist
straps and to 750 kilohm - 100 megohm for footwear. The Combo
Tester X3 can be tailored to other ESD Control Plan requirements
with DIP switches. A green light signals the operator that the
wrist strap and footwear is passing. A red light and an audible
alarm will indicate if the wrist strap and/or footwear (left or right)
is failing. If there is a failure It will also notify the operator if the
circuit resistance is too low or too high. The Combo Tester X3 is
calibrated to NIST traceable standards.

Features

• Stainless Steal Split Foot Plate for Testing Foot Grounders
(or Shoes)
• Solid State Touch Test Button With No Moving Parts
• 30 Volt Test Signal
• Relay For Use With Automatic Doors Or Other Locking Systems
• CAT5 Connector For Data Output
Per ANSI/ESD S20.20 section 7.3 "A Compliance Verification Plan
shall be established to ensure the Organization's fulfillment of the
technical requirements of the ESD Control Program Plan. Process
monitoring (measurements) shall be conducted in accordance
with a Compliance Verification Plan that identifies the technical
requirements to be verified, the measurement limits and the
frequency at which those verifications shall occur. The Compliance
Verification Plan shall document the test methods and equipment
used for process monitoring and measurements. ... The test
equipment selected shall be capable of making the measurements
defined in the Compliance Verification Plan."
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Fax (781) 575-0172 • Website: Desco.com
TB-3034 June 2009 Page 1 of 5
TECHNICAL BULLETIN TB-3034
3
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449
Per ANSI/ESD S1.1 section 6.1.3 Frequency of Functional Testing
"The wrist strap system should be tested daily to ensure proper
electrical value."
Per ESD Handbook ESD TR20.20 section 5.3.2.4.2 Additional
User Wrist Strap Testing "Proper testing of the wrist strap includes
the resistance of the groundable point on the end of the cord,
the cord itself, the resistor, the cord-to cuff snap connector, the
resistance of the interface of the cuff, the cuff/wrist interface, and
the resistance of the person between the wrist and the hand that
contacts the test electrode."
Per ESD Handbook ESD TR20.20 section 5.3.2.2.2 Wrist Strap
Ground Cord "At first glance, the ground cord appears to be a
relatively simple assembly. However, the design requirements are
considerable, given the wide range of user applications and the
durability requirements of constant tugging, flexing, and dragging
over the edge of workstation tops and equipment chassis."
"Compliance verification should be performed prior to each
use (daily, shift change, etc.). The accumulation of insulative
materials may increase the foot grounder system resistance. If
foot grounders are worn outside the ESD protected area testing
for functionality before reentry to the ESD protected area should
be considered." (ESD SP9.2 APPENDIX B - Foot Grounder Usage
Guidance)
"A log should be maintained which verifies that personnel have
tested their personal grounding devices. (Wrist Straps and
ESD Footwear)" (ANSI/ESD S20.20 Section 6.2.2.2 Personnel
Grounding Guidance)
Desco Combo
Tester X3 with Dual
Plate, Item 19276
Made in America
Desco Combo Tester
X3 with Stand,
Item 19277
© 2009 DESCO INDUSTRIES INC.
Employee Owned