TECHNICAL BULLETIN TB-6533 Bench Top Zero Volt Ionizer Made in the Installation, Operation and Maintenance United States of America by attracting opposite polarity charges from the ionized air. Note that ionization systems should not be used as a primary means of charge control on conductors or people. (Reference: EN 61340-5-2:1 clause 5.2.9) 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. Figure 1. EMIT Bench Top Zero Volt Ionizer, Stainless Ionizers are used when it is not possible to properly ground Steel 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 Introduction and Purpose / General Information) The EMIT Bench Top Zero Volt Ionizer operates on Steady State DC. Steady State DC systems consist of separate negative and positive ion emitters connected by a pair of high-voltage cables to their respective high-voltage power supplies. The spacing between emitters varies depending on the design, and DC power is constantly applied to the emitter points. The ionizer utilizes feedback from the internal sensor grill to continuously adjust the output to maintain balance Ionizer Selection Figure 2. EMIT Bench Top Zero Volt Ionizer, Powder ANSI/ESD S20.20 section 6.1.1.2. ESD Control Program Coat Plan Guidance states: The Plan should include a listing of the specific type of ESD protective materials and equipment Description used in the Program. When selecting an ionizer, life cycle costs should be considered, including: The EMIT Bench Top Zero Volt Ionizer is a compact and - equipment cost lightweight steady state DC auto-balancing bench top - installation cost worksurface ionizer with integrated closed-loop feedback. - operation and maintenance cost The unit is normally placed at one end of the workbench or area to be neutralized. It may also be mounted to a wall or EMIT ionizers meet the ANSI/ESD S20.20 required limit shelf. The Ionizers neutralization discharge time will be best of less than +/- 35 volts offset voltage balance tested in approximately 12 to 48 directly in front of the unit and will accordance with ANSI/ESD STM3.1 and ESD TR53. All increase as the distance from the unit increases. EMIT Bench Top Ionizers provides superior 5 to 25 volt auto-balancing. Ionizers are useful in preventing electrostatic charge generation, ElectroStatic Discharge, ElectroStatic Attraction, The Bench Top Zero Volt Ionizer is available in four models: as well as preventing equipment latch-up. Per ANSI/ESD S20.20 section 6.2.3.1. Protected Areas Requirement states: Item Voltage Enclosure Ionization or other charge mitigating techniques shall be used at the workstation to neutralize electrostatic fields 50663 120 VAC Stainless Steel on all process essential insulators if the electrostatic field 50670 220 VAC Stainless Steel is considered a threat. Air ionization can neutralize the static charge on insulated and isolated objects by producing 50690 120 VAC Powder Coat separate charges in the molecules of the gases of the 50691 220 VAC Powder Coat surrounding air. When an electrostatic charge is present on objects in the work environment, it will be neutralized EMIT - 3651 Walnut Avenue, Chino, CA 91710 (909) 664-9980 Website: DescoEMIT.com 2017 DESCO INDUSTRIES, INC. TB-6533 Page 1 of 6 May 2017 Employee OwnedPackaging Installation 1 Bench Top Zero Volt Ionizer Place the unit at a desired location where that the airflow will 1 Power Cord (50663, 50690 only) not be restricted. Be sure that the ON/OFF switch located 1 Emitter Point Cleaner Pack on the rear of the unit is in the OFF position. Plug the power 1 Certificate of Calibration cord into the unit and then into the appropriate AC power source. Features and Components Operation 1. Set the fan speed switch on the rear of the unit to the LOW, MED, or HI position (see Figure 3). Higher airflow will result in faster neutralization rates. 2. Position the ionizer so that maximum airflow is directed towards the items or area to be neutralized. 3. Turn the unit ON. When the unit is first turned on, it conducts a self-test. The audible alarm will sound and the LED will cycle through the colors red, yellow, and green. The LED will remain green during normal operation. Figure 3. Bench Top Zero Volt Ionizers features and Maintenance components All ionization devices will require periodic maintenance for proper operation. Maintenance intervals for ionizers vary A. Power Cord Connection: Connect the power cord here. widely depending on the type of ionization equipment and use environment. Critical clean room uses will generally B. Power Switch: Toggle the switch to the left to turn the require more frequent attention. It is important to set-up ionizer OFF. Toggle the switch to the right to turn the ionizer a routine schedule for ionizer service. Routine service is ON. typically required to meet quality audit requirements. (ESD C. Fan Speed Switch: Toggle the switch to the left to set Handbook TR20.20 section 5.3.6.7 Maintenance / Cleaning) the fan speed to LOW. Toggle the switch to the middle to EIA-625, recommends checking ionizers every 6 months, but set the fan speed to MEDIUM. Toggle the switch to the right this may not be suitable for many programs particularly since to set the fan speed to HIGH. an out-of-balance may exist for months before it is checked D. RS-485 IN: For manufacturer use. again. ANSI/ESD S20.20 section 6.1.3.1 Compliance Verification Plan Requirement states: Test equipment shall E. RS-485 OUT: For manufacturer use. be selected to make measurements of appropriate properties F. Balance Adjustment: Turn the potentiometer of the technical requirements that are incorporated into the clockwise for positive adjustment. Turn the potentiometer ESD program plan. counter-clockwise for negative adjustment. CLEANING THE EMITTER POINTS Under normal conditions, the ionizer will attract dirt and dust (especially on the emitter points). To maintain optimum neutralization efficiency and operation, cleaning should be performed on a regular basis. 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. The emitter points should be cleaned using the included Emitter Point Cleaners or a swab dampened with Isopropyl alcohol. EMIT - 3651 Walnut Avenue, Chino, CA 91710 (909) 664-9980 Website: DescoEMIT.com 2017 DESCO INDUSTRIES, INC. TB-6533 Page 2 of 6 Employee Owned