TECHNICAL BULLETIN TB-3031 Chargebuster Overhead Ionizer Installation, Operation and Maintenance Made in the United States of America Description Desco Chargebuster Overhead Ionizers are steady-state DC ionizers designed for use in ESD protected areas. The 2-fan ionizers (60640, 60467) have a 2 x 4 coverage area, and the 3-fan ionizers (60473, 60468) have a 2 x 5 coverage area. The Chargebuster Overhead Ionizers discharge times (< 3 seconds at 18 ) and low offset voltage (10 volts) Figure 1. Desco 60640 Chargebuster Overhead Ionizer meet the required limits of ANSI/ESD S20.20 < 35 volts tested per ANSI/ESD STM3.1 and ESD TR53. Its emitters are made of pure tungsten and spaced further apart to minimize ion recombination, increase discharge efficiency and provide a broader coverage area. The fans have 3 speeds (high, medium, low) which produce consistent performance at all 3 settings. The Chargebuster Overhead Ionizers utilize an auto-feedback system that continuously optimizes its performance and automatically alarms and shuts down should its supply voltage drop. Figure 2. Desco 60473 Chargebuster Overhead Ionizer The Desco 60467 and 60468 Chargebuster Overhead Ionizers include 700 lumen light panels (cool white) that provide additional illumination to the work area and improve visibility and productivity. The 60467 features one light panel, and the 60468 features two. 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 Figure 3. Desco 60467 Chargebuster Overhead Ionizer hazard created by electrostatic charges on the with Light 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 Foreword) In order to mitigate field-induced CDM Charged Device Model damage, the ESD program shall include a plan for the handling of 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 Figure 4. Desco 60468 Chargebuster Overhead Ionizer ionization or other charge mitigating techniques to with Lights neutralize the charge. (ANSI/ESD S20.20 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. DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2019 DESCO INDUSTRIES INC TB-3031 Page 1 of 9 December 2019 Employee OwnedAir 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) The Chargebuster Overhead Ionizer is available in four models: Input Item Fans Lights Power Cord Voltage 60640 2 0 120 VAC North America 60473 3 0 120 VAC North America 60467 2 1 120 VAC North America Figure 5. Fan Speed Switch, Power Input and Power 60468 3 2 120 VAC North America Switch Packaging Operation 1 Chargebuster Overhead Ionizer 1. Set the fan speed switch to the LOW, MED, or 1 Hanging Kit HI position. Higher airflow will result in faster 1 Power Cord, North American Plug neutralization rates. 2 Emitter Point Cleaners (60640, 60467) 3 Emitter Point Cleaners (60473, 60468) 2. Position the ionizer so that maximum airflow is 1 Certificate of Calibration directed towards the items or area to be neutralized. 3. Turn the unit ON. When the unit is first turned on, Installation it conducts a self-test. The audible alarm will sound and the LED will cycle through the colors red, yellow The Chargebuster Overhead Ionizer is designed to and green. The LED will remain green during mount above the work area, providing even coverage normal operation. without using valuable worksurface area. Mounting is a matter of personal preference. Use the included hanging 4. Toggle the light switch on the front of the ionizer to kit to suspend the ionizer with its brackets, or secure its ON to power the LED panel(s) (60467, 60468 only). brackets to a shelf. Ensure that the mounting is secure and capable of supporting the weight of the ionizer. The power cord should be supported as well to protect the operator from any hazard. The ideal mounting height is 18 above the worksurface, although the ionizer may be located slightly higher or lower if required. For optimum performance, ensure that the intake grills for the fans are not obstructed. Verify that the ON/OFF switch located at the back of the ionizer is in the OFF position. Plug the power cord into the ionizer, and plug the other end into a properly wired power outlet. Figure 6. Light Switch (60467 and 60468 models only) DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2019 DESCO INDUSTRIES INC TB-3031 Page 2 of 9 Employee Owned