TECHNICAL BULLETIN TB-2016 Bench Top Blower Ionizer Made in the Installation, Operation and Maintenance United States of America Ionizer Selection ANSI/ESD S20.20 section 6.1.1.2. ESD Control Program Plan Guidance states: The Plan should include a listing of the specific type of ESD protective materials and equipment used in the Program. When selecting an ionizer, life cycle costs should be considered, including: - equipment cost - installation cost - operation and maintenance cost The Desco Bench Top Blower Ionizer is available in the following models: Figure 1. Desco Bench Top Blower Ionizer Item Input Voltage Power Cord Description 19500 120VAC North America This ionizing unit is a self-balancing bench top ionizer. 19520 220VAC Not Included The ionizers Faraday Balance System assures low offset voltage or balance automatically. It offers greater Packaging efficiency and easier cleaning than conventional 1 Bench Top Blower Ionizer ionizers. The Bench Top Ionizer is designed to 1 Power Cord, 6 (19500 only) neutralize static electricity from insulators and isolated 1 Filter and Guard Assembly conductors in localized work areas in assembly rooms, 1 Certificate of Calibration wave solder lines, laboratories, QC, test stations, packing and shipping areas and clean rooms. Installation Ionizers are useful in limiting electrostatic charge The unit is normally mounted at one end of a workbench generation, ElectroStatic Discharge, and ElectroStatic or area to be neutralized. It may also be mounted to Attraction, as well as preventing equipment latch-up. a wall or shelf. The ionizers neutralization (discharge) ANSI/ESD S20.20 Paragraph 6.2.3.1 Protected times will be best from approximately 6 to 42 in front Areas Requirement states: Ionization or other charge of the unit and will drop off as the distance from the unit mitigating techniques shall be used at the workstation increases. to neutralize electrostatic fields on all process essential insulators if the electrostatic field is considered a threat. Some examples of process necessary insulators are: the PC board itself, plastic test stands, plastic housing where a PCB may be mounted, as well as computer monitor screens and regular cleaning wipes. Examples 18 of floating or isolated conductors are: loaded PCB mounted in a stand where the pins are not contacting the dissipative workstation. Ionization is not effective on items that have large capacitance, like people and carts however, ionizers should be considered as a method for charge neutralization in cases where grounding cannot be achieved. 12 Air ionization can neutralize the static charge on insulated and isolated objects by producing separate charges in the molecules of the gases of the 42 6 surrounding air. When an electrostatic charge is present on objects in the work environment, it will be Figure 2. Area of optimum charge neutralization neutralized 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: IEC 61340-5-2:1 paragraph 5.2.9). 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 2018 DESCO INDUSTRIES INC TB-2016 Page 1 of 6 August 2018 Employee OwnedMount the unit in the desired position. You can bolt EIA-625 recommends checking ionizers every the stand to a wall or under a shelf as desired. For 6 months, but this may not be suitable for many best results, the unit should be mounted so that no programs particularly since an out-of-balance may obstructions exist between the output area and the area exist for months before it is checked again. ANSI/ESD to be neutralized. S20.20 section 6.1.3.1 Compliance Verification Plan Requirement states: Test equipment shall be selected to make measurements of appropriate properties of the technical requirements that are incorporated into the ESD program plan. And section 6.1.3.2. Compliance Verification Plan Guidance states: In addition to internal audits, external audits (Organization and supplier of ESDS items) should be performed to ensure compliance with planned requirements. Verifications should include routine checks of the Technical Requirements in the Plan. The frequency of verification checks should be based on the control item usage, its durability and associated risk of failure. Figure 3. Wall or shelf mounting of the ionizer Under normal conditions, the ionizer will attract and Set both front panel rocker switches in the off position. accumulate dirt and dust (especially on the emitter electrodes). To maintain optimum performance, Connect the IEC plug into the connector on the back cleaning must be performed on a regular basis. The panel of the ionizer, press firmly to ensure that the electrodes should be cleaned at least as often as cord is properly attached. Install the power cord into a indicated in the next section. However, more frequent properly grounded outlet. The ionizer must be grounded cleaning may be required if used in environments with for proper operation. Desco recommends the 19219 more contaminants. Ground Hub Continuous Monitor or 98132 AC Outlet Analyzer to check the ground. METHOD 1 (Annually) To remove heavier accumulations of dirt and dust, use clean, compressed air. Disconnect power to the Operation ionizer. With one hand firmly on top of the ionizer, aim Turn on the power switch and adjust fan speed for the com pressed air through the front grill, directly at the pins. desired air flow. Higher air flow will result in a faster A few passes back and forth with the nozzle is sufficient. neutralization rate. Aim the unit so that the maximum airflow is directed at the items or area to be neutralized. The left rocker switch turns on a heater which will raise the temperature of the output air to about 10F above ambient. The heater is only to offset the chill factor of the moving air. It is not intended to warm the workstation. If the ionizer is used in a manner not specified by the manufacturer, the protection provided by the ionizer may be impaired. Figure 4. Cleaning the electrodes using compressed air Maintenance As with all ionizers, periodic maintenance will be needed to provide optimum performance. (Reference: IEC 61340-5-2:1 paragraph 5.2.9). The frequency of monitoring ionizers really depends on how and where they are used. Since the majority of them use a fan to transport the ions to the working area, the cleanliness of the air directly affects their performance over time and how often the emitters should be cleaned. 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 2018 DESCO INDUSTRIES INC TB-2016 Page 2 of 6 Employee Owned