Desco - Limited Warranty
Instruction Manual for DESCO models including: 19203, 19204, TB-3099 Ground Hub Continuous Monitor, TB-3099, Ground Hub Continuous Monitor, Hub Continuous Monitor, Continuous Monitor, Monitor
Desco - 19204 Ground Hub Monitor, Asia
Desco Asia - Manufacturer of ESD Static Control Products
File Info : application/pdf, 3 Pages, 1.16MB
DocumentDocumentTECHNICAL BULLETIN TB-3099 Ground Hub Continuous Monitor Installation, Operation, and Maintenance Made in the United States of America Use the Ground Hub Continuous Monitor to fulfill the S6.1 Section 6.3.1 requirement. "The hot, neutral, and equipment grounding conductor shall be verified to be in the proper wiring orientation in accordance with the National Electric Code (ANS/NFPA-70)." (Grounding ANSI/ESD S6.1 section 6.3.1 Equipment Grounding Conductor) The Ground Hub Continuous Monitor is available in two models: Item Plug Regions 19203 Type B North America, Japan 19204 Type G Southeast Asia, UK Packaging 1 Ground Hub Continuous Monitor 6 Socket Head Screw, 10-32 x 1/4" 6 Split Lock Washer, #10 1 Hex L-Key, 5/32" Figure 1. Desco 19203 Ground Hub Continuous Monitor Description The Desco Ground Hub Continuous Monitor confirms the integrity of the resistance path from the common ground point to electrical ground. It is designed in accordance with ESD TR 12-01 to "monitoring equipment ground connections." When the Ground Hub Continuous Monitor is plugged into an AC outlet, the green LED illuminates when both the outlet's wiring is correct and the path to equipment ground via the equipment grounding conductor is intact. The monitor provides 13 verified ground points when in PASS condition. The red LED illuminates when either the outlet's wiring is incorrect or the path-to-equipment ground is defective. The outlet ground line is tested by measuring voltage between it and the neutral line. It is normal to have a few volts of AC induced on the neutral line. If the Ground Hub Continuous Monitor measures only a few volts, the ground line to neutral impedance is low and the ground line would make a suitable ESD ground point. If the monitor measures more than just a few volts between ground and neutral, this indicates either that they are not referenced to each other or that the outlet and associated wiring should be checked for loose connections. In this case, the Ground Hub Continuous Monitor will sound a warning alarm and display a red FAIL indication and should not be used for an ESD grounding point until corrected. Figure 2. Ground Hub Continuous Monitor packaging contents 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 TB-3094 Page 1 of 3 August 2024 © 2024 DESCO INDUSTRIES INC Employee Owned Features and Components A Installation 1. Plug the Ground Hub Continuous Monitor into a proper electrical outlet. 2. The Ground LED will illuminate green if the outlet's wiring is correct and the path-to-equipment ground via the equipment grounding conductor is intact. The Ground LED will illuminate red and the audible alarm will sound if the outlet's wiring is incorrect or the path to equipment ground via the equipment grounding conductor is not intact. B C Figure 2. Desco 19203 Ground Hub Continuous Monitor features and components Operation Use the included socket head screws and split lock washers to connect ring terminals (not included) or the banana jacks (not included) to connect banana plugs to the Ground Hub. Ring terminals may also be connected to the ground post. A B C Figure 3. Desco 19204 Ground Hub Continuous Monitor features and components A. Ground LED: Illuminates green when the AC outlet is properly wired and its path to equipment ground via the equipment ground conductor is intact. Illuminates red and audible alarm sounds when the AC outlet is not properly wired and its path to equipment ground via the equipment ground conductor is broken. B. Ground Hub: Provides 12 verified ground points via six banana jacks and six screws for #8 ring terminals. C. Ground Post: Provides a verified ground point. Bond to the 09842 Multi-Ground Hub to create an additional 12 ground points. Figure 4. Using the Ground Hub Continuous Monitor TB-3094 Page 2 of 3 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 © 2024 DESCO INDUSTRIES INC Employee Owned Calibration Note: The following procedure should only be performed by someone familiar with voltage hazards. This procedure will work for 220 VAC configurations as long as the neutral and ground are referenced. 220 VAC produced with out-of-phase 110 VAC-to-Ground-to-110 VAC will produce a FAIL result. 1. Isolate the ground plug from the tester by inserting it into a 3 to 2 plug adapter. 2. Connect a 5 kilohm resistor between the supply ground and tester ground. The Ground LED should illuminate green until the resistor is removed. This test confirms the pass limit for the neutral-to-ground resistance. 3. Connect a 12.5 kilohm resistor between the supply ground and tester ground. The Ground LED should illuminate red and sound the audible alarm until the resistor is removed. This test confirms the fail limit for the neutral-to-ground resistance. Specifications Input Voltage and Frequency 100-240 VAC, 50/60 Hz Operating Temperature 50 to 95°F (10 to 35°C) Environmental Requirements Indoor use only at altitudes less than 6500 ft. (2 km) Maximum relative humidity of 80% up to 85°F (30°C) decreasing linearly to 50% @ 85°F (30°C) Equipment Ground 10 kilohms (±25%) Conductor Test Limit Dimensions 19203: 3.0" x 2.0" x 1.4" (76 mm x 51 mm x 36 mm) Weight Country of Origin 19204: 3.1" x 2.1" x 2.0" (79 mm x 53 mm x 50 mm) 0.4 lbs (181 g) United States of America Limited Warranty, Warranty Exclusions, Limit of Liability and RMA Request Instructions See the Desco Warranty Desco.com/Limited-Warranty.aspx TB-3094 Page 3 of 3 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 © 2024 DESCO INDUSTRIES INC Employee Owned