Desco TB-3043 Installation Manual

TECHNICAL BULLETIN TB-3043

High Output Benchtop Ionizer
Installation, Operation and Maintenance

process-required insulators. If the field exceeds 2,000 volts/inch,
steps shall be taken to either: A) Separate the insulator from the
ESD-sensitive device by a distance of 30 cm (12 inches); or B) Use
ionization or other charge mitigating techniques to neutralize the
charge.” (ANSI/ESD S20.20-2007 section 8.3)

“The primary method of static charge control is direct connection to
ground for conductors, static dissipative materials, and personnel.
A complete static control program must also deal with isolated
conductors that cannot be grounded, insulating materials (e.g.,
most common plastics), and moving personnel who cannot use
wrist or heel straps or ESD control flooring and footwear. Air
ionization is not a replacement for grounding methods. It is one
component of a complete static control program. Ionizers are used
when it is not possible to properly ground everything and as backup
to other static control methods. In clean rooms, air ionization
may be one of the few methods of static control available.” (ESD
Handbook ESD TR20.20 Ionization, section 5.3.6.1)

“All ionization devices will require periodic maintenance for
proper operation. Maintenance intervals for ionizers vary
widely depending on the type of ionization equipment and use
environment. Critical clean room uses will generally require more
frequent attention. It is important to set-up a routine schedule for
ionizer service. Routine service is typically required to meet quality

Figure 1. 60505 High Output Benchtop Ionizer

Description

The Desco 60505, High Output Benchtop Ionizer is a steady
state DC, auto-balancing tabletop ionizer. A specially designed
fan module creates better coverage (16” x 36”), consistent offset
voltage (balance) ±3 should be with a discharge times at less than
one second at 12”. The unit continually adjusts voltage output for
optimal performance and automatically alarms when maintenance
is needed or the unit is not operating correctly. Ionization offset
voltage balance is consistent at all 3 speeds (50-100 CFM) and
allows for use in sensitive applications, such as calibration, test, or
repair procedures. The powder coated housing, multi-mount stand
and sealed bearing fans minimize foreign objects debris, corrosion,
and other contaminations when used in clean or or sensitive
areas. Field replaceable emitter pins allow for replacement without
returning to the factory.

“Necessary non-conductors in the environment cannot lose
their electrostatic charge by attachment to ground. Ionization
systems provide neutralization of charges on these necessary
non-conductive items (circuit board materials and some
device packages are examples of necessary non-conductors).
Assessment of the ESD hazard created by electrostatic charges
on the necessary nonconductors in the work place is required to
ensure that appropriate actions are implemented, commensurate
with risk to ESDS [ESD sensitive] items”. (ANSI/ESD S20.20-2007
Foreword)

“In order to mitigate field-induced CDM [Charged Device Model]
damage, the ESD program shall include a plan for the handling of

audit requirements.” (ESD Handbook ESD TR20.20 section 5.3.6.7
Maintenance / Cleaning)

CSA International tests products for compliance to national and
international standards, and issues certification marks for qualified
products. The certification marks tell potential customers and users
that a product has been evaluated by a formal process-involving
examination, testing and follow-up inspection-and that it complies
with applicable standards for safety and performance.

http://www.csa-international.org/

High Output

1 Benchtop Ionizer with stand
1 Power Cord
1 Emitter Point Cleaner Pack (Item 60506)
1 Certificate of Calibration

Input Voltage

WARNING - RISK OF ELECTRIC SHOCK

THESE SERVICING INSTRUCTIONS ARE FOR USE BY
QUALIFIED PERSONNEL ONLY. DO NOT PERFORM ANY
SERVICING OF INTERNAL PARTS UNLESS YOU ARE
QUALIFIED TO DO SO.
NOTE: THE AC POWER CORD MUST ALWAYS BE
DISCONNECTED BEFORE THE UNIT IS DISASSEMBLED. UNIT

SHIPPED SET AT 110V

Made in America

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

TB-3043 Page 1 of 5

TB-3043 August 2010 Page 1 of 5

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

© 2009 DESCO INDUSTRIES, INC.

© 2010 DESCO INDUSTRIES INC.

Employee Owned

Employee Owned

The input voltage may be verified or changed to 220V by removing
the 3 screws located on the back of the unit then removing the back
case.

Input voltage is selected with two internal jumpers on JH1. For 110
volt jumper setting, a jumper must be in place shorting pin 1 to 2
and another shorting pin 3 to 4 (see figure 2). For 220 volt jumper
setting, a single jumper must be in place shorting 2 to 3 only (see
Figure 3). Make sure settign is correct before applying power

Before installing the unit, verify that the AC outlet is properly
connected to ground. The unit must have a good ground to
maintain proper offset voltage balance. Install the unit in the
desired location, making sure that the airflow will not be restricted.
Be sure the “OFF / ON” switch located on the rear of the unit is in
the OFF position. Plug the power cord into the unit and then into
the appropriate AC power source.

Figure 2. 110 Volt Jumper Setting

Figure 4. Front and Back High Output Benchtop Ionizer

Angle Adjustment Knobs - The angle of the fan may be adjusted to
direct the airflow in the optimum coverage area.

Visual Alarm ­ GREEN - Normal Operation
RED - Ionizer needs maintence. Voltage supply has
dropped below normal

Fan Guard Screws ­ May be removed ONLY when unit is disconnected from
power for cleaning

Front Fan Guard ­ May be removed ONLY when unit disconnected from
power for cleaning

Figure 3. 220 Volt Jumper Setting

Operation

Set the fan speed switch on the rear of the unit to the LOW, MED,
or HIGH position. Higher airflow will result in faster discharge times.
Position the unit so that the maximum airflow is directed at the items
or area to be neutralized. Turn the unit ON. When the unit is first
turned on, it will conduct a self-test. The audible alarm will sound
and then the LED will cycle through RED, YELLOW, and GREEN.
The LED will remain GREEN during normal operation.

Back Fan Guard ­ May be removed ONLY when unit disconnected from
power for cleaning

IEC Cord Connection ­ AC line power, 120 VAC, 50/60Hz (Can be changed
internally to 220V)

On/Off Switch
Ionizer maybe turned when not in use.

Fan Speed Adjustment
3 postition fan speed: Low, Medium, High (50-100CFM)

Balance Adjustment
See Calibration/Maintenence section

If the supply voltage drops from 120 Volts to below 85 Volts, the
unit will shut down, the audible alarm will beep, and the LED will
blink RED. The unit will automatically reset when the minimum
voltage is restored. Under normal conditions the ionizer will attract
dirt and dust (especially on the emitter electrodes). To maintain
optimum neutralization efficiency and operation, cleaning should
be performed on a regular basis. When the unit enters shutdown
mode, ionization will be stopped, the LED on the front of the unit

TB-3043 Page 2 of 5

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

© 2009 DESCO INDUSTRIES, INC.

© 2010 DESCO INDUSTRIES INC.

Employee Owned

Employee Owned

will change to a steady RED, and the audible alarm will sound
continuously. If the ionizer enters shutdown mode, it must be turned
OFF and then back ON to reset the unit. (See following Calibration
section for more info.)

In the event of circuit failure, the unit will enter shutdown mode.
When the unit enters shutdown mode, ionization will be stopped,
the LED on the front of the unit will illuminate a constant red, and
the audible alarm will continuously sound. The user must then
reset the unit by turning it OFF and back ON.

Figure 5 Cleaning the Emitter Points

Cleaning the Emitter Points

Turn electrical power OFF.

I. Turn the unit OFF and unplug the power cord.

Figure 6. Neutralization (discharge) times

The typical discharge times measured using this standard for
the ionizer are shown in the following diagram. They are not
guaranteed maximum discharge times
Note: Reference ANSI/ESD STM 3.1. At room ambient temperature
and relative humidity.

Specifications:

AIR FLOW

Three speed fan (125 fpm - 250 fpm, 50 cfm - 100 cfm)

II. Remove the rear screen by removing the 4 screws.
See Figure 5

III. Clean the emitter points using the included 60506
Emitter Point Cleaners or a swab dampened with
Isopropyl alcohol

IV. Reattach the rear screen.

V. Plug in the power cord and turn the unit ON.

VI. Verify the offset voltage balance of the ionizer by
using a charge plate monitor or ionization test kit.

The emitter electrodes should not require replacement during the
life of the unit with normal handling. If necessary, item 60507
Replacement Emitter Points are available for order.

ESD TR53 does not advise a test frequency for ionizers. Your
maintence schedule will depend on the requirements of your
ESD Control Plan. In order to manage service intervals, Desco
recommends assigning a number or other identification method for
each ionizer in your Maintence / Calibration schedule. You may
choose to use the ionizer’s serial number for identification, as it is a
unique number for identification, as it is a unique number that can
be traced to when the ionizer was manufactured.

Neutralization (Discharge) Times

The comparative efficiency of overhead ionizers is determined by a
standard test published by ANSI/ESD S3.1. Typical positive and
negative discharge times (in seconds from 1000 volts to 100 volts
and from -1000 volts to -100 volts) measured using this standard
are shown below. The performance of the ionizer was measured
with the unit positioned as shown, with the fan speed on high, and
without a filter.

OFFSET VOLTAGE BALANCE

±3 Volts Typical
±5 Volts Typical
(Temperature Range: 65°F - 80°F, RH: 15% - 65%)

CHASSIS

Powder coated aluminum housing

DIMENSIONS (with stand)

9.5" H x 6.0" W x 3.1" L (24cm H x 15cm W x 8cm L)

EMITTER POINTS

.050" diameter
Made of pure tungsten for improved mechanical strength and
ionization stability

FUSE

250 mA slow blow

HIGH VOLTAGE POWER SUPPLY

5.5 kV DC nominal

INPUT POWER

AC line power
Internally selectable for 110/115 VAC - 50/60Hz or
220/230 VAC - 50/60Hz

ION EMISSION

Steady-state DC with sense feedback

MOUNTING

Bench Top tilt adjust frame

OZONE

< 0.05 ppm

WEIGHT

4.5 lbs (2.04 kg)

TB-3043 Page 3 of 5

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

© 2009 DESCO INDUSTRIES, INC.

© 2010 DESCO INDUSTRIES INC.

Employee Owned

Employee Owned

Compliance Verification

ANSI/ESD S20.20-2007 added Compliance Verification columns
to the Tables. The test method for Compliance Verification
is ESD TR53. Ionizers should be tested periodically for both
polarity’s discharge times, and for offset voltage balance per ESD
Association Technical Report ESD TR53 Compliance Verification
of ESD Protective Equipment and Materials. The most accurate
tool to use for this is a Charged Plate Monitor. Alternatively, a
portable battery operated Ionization Test Kit can be used.

III. Position the charged plate analyzer 18 inches away from High
Output Benchtop Ionizer.

IV. The offset voltage balance should be within 0 ±15 volts. The
required limit per ANSI/ESD S20.20 is less that ± 50 volts.
To increase the output in a postive direction, turn the BALANCE
ADJUST potentiometer in a clockwise direction. To increase
the output in a negative direction, turn the BALANCE ADJUST
potentiometer in a counter clockwise direction.

Per ESD TR 53 ANNEX A “Test Frequency, The objective of the
periodic test procedures listed in this document is to identify if
significant changes in ESD equipment and materials performance
have occurred over time. Test frequency limits are not listed in
this document, as each user will need to develop their own set of
test frequencies based on the critical nature of those ESD sensitive
items handled and the risk of failure for the ESD protective
equipment and materials.”

Per ESD TR53, all the test locations of S3.1 are not required;
rather “Measurements should be made at the location where ESD
sensitive items are to be ionized. For many EPA ESD Control
items sampling is appropriate for Compliance Verification, however,
best practice is to test each ionizer.

NIST Calibration

Desco provides a basic, National Institute of Standards and
Technology (NIST) traceable calibration for the products that
we manufacture. This is sometimes referred to as a Level 1
calibration.

For more on National Institute of Standards and Technology see:

http://www.nist.gov/index.html

For more information on the calibration that Desco’s provides
for products that we manufacture see: http://www.desco.com/

Calibration.aspx

Calibration / Offset Voltage Balance Adjustment

When an alarm sounds, most users will clean emitter pins (see
Maintenance / Alarms section) and calibrate the ionizer. Per ESD
TR 53 section 5.3.6.7.1 “The best practice is to measure the offset
voltage and discharge times, clean the unit, including emitter points
and air filters if present, offset voltage to zero (if adjustable), and
then repeat offset voltage and discharge time testing. If the unit
does not meet offset voltage specifications or minimum established
discharge time limits, further service is indicated. Manufacturers
should provide details on service procedures and typical service
intervals.”

V. Test the neutralization discharge time by applying a ±1,000
volt on the charged plate. Do both ± polarities. The
neutralization (discharge) time should be less than 3 seconds.
See figures 4 for typical discharge times. The required limit per
ANSI/ESDS20.20 is “user defined”.

VI. Submit the offset voltage balance to the ionizer’s control
circuit by quickly pressing the ALARM RESET button. The
STATUS LED should turn off and then illuminate green to
verify that the control circuit was successfully programmed.

VII.Test each fan’s alarm by shorting its two grills located on the
bottom side of the ionizer (see Figure 8). The alarm should
sound and the STATUS LED should illuminate red.

Health

There are no known health risks associated with our devices. The
emitters work at about 4-6 kV and can create ozone, but there
have been no significant measurement of ozone from our emitter
sets as all our existing units test well below the OSHA limit of 0.05
ppm ozone. For additional safety information, see “Dispelling an
Old Myth” written by William Metz of Hewlett-Packard published in
Evaluation Engineering magazine September 2001.

JESDD625-A (Revision of EIA-625) recommends ionizers be
tested semiannually, noting to use “S3.1 except the number of
measurement points and locations may be selected based on the
application.”

NOTE: A charged plate analyzer or monitor should be used in
order to properly calibrate the Chargebuster High Outfit Benchtop
Ionizer.EMIT offers the 50555 Charged Plate Analyzer.

I. Properly setup the ionizer as described in the Installation
procedure on page 1.

II. Turn the unit ON and set the FAN SPEED to HIGH.

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

TB-3043 Page 4 of 5

Figure 7. 60505 Shorting the Ionizer’s two fan grills

© 2009 DESCO INDUSTRIES, INC.

© 2010 DESCO INDUSTRIES INC.

Employee Owned

Employee Owned

Limited Warranty

Desco expressly warrants that for a period of one (1) year from
the date of purchase, Desco High Output Benchtop Ionizers will
be free of defects in material (parts) and workmanship (labor).
Within the warranty period, a unit will be tested, repaired or
replaced at Desco option, free of charge. Call Customer Service
at 909-627-8178 for Return Material Authorization (RMA) number
and proper shipping instructions and address. Any unit under
warranty should be shipped prepaid to the Desco factory. Include
a copy of your original packing slip, invoice, or other proof of
purchase date. Warranty repairs will take approximately two
weeks.

If your unit is out of warranty, Desco will quote repair charges
necessary to bring your unit up to factory standards. Call
Customer Service at 909-627-8178 for an RMA number and
proper shipping instructions, and ship your unit freight prepaid.

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

Electronic ionizers use high voltage corona discharge and should
not be used in or near flammable or explosive environments.
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.

TB-3043 Page 5 of 5

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

© 2009 DESCO INDUSTRIES, INC.

© 2010 DESCO INDUSTRIES INC.

Employee Owned

Employee Owned