Brookfield Industries, Inc. Series NB-500 Standard Swinging Door Operator NB-500 Main/Sub

For use on double doors with an astragal The brookfield NB-500 Main/Sub swinging door operator has been designed, tested and is manufactured by brookfield industries, inc. in accordance with UL 325 and ANSI 156.10 for linear accelerator swing doors weighing up to 4,500 lbs and 66” wide.; The NB-500 can be expected to safely operate doors at the maximum weight and width for at least 500,000 cycles, providing the door is set within the ANSI 156.10 speed criteria and the rated operating torque of 1000 lb-in (reflected to the operator) has not been exceeded. If any one of the following: torque, weight, width or cycles exceeds the rated value, please contact the Engineering Department for further evaluation. The Main/Suboperator is intended for use on double doors with an astragal. The Lead Door is designed to open first and close last, while the Follow Door opens last and closes first. The Lead Door and Follow Door can be setup as either a left hand or right hand operator. The Main Operator is designated as the right hand operator, while the Sub is always the left hand. The Main Operator houses a common CPU (Central Processing Unit), Analog/Digital Converter and Class (2) 24 VDC Power Supply as well as a common Terminal Strip for hookup of input commands. All other components such as the Motor Control, Drive Train and Rotary Position Transducer are independent for both the Main and Sub operator. The CPU has been uniquely programmed to assure the doors remain in sequence during the closing cycle if one or both doors are in the Entrapment mode. Upon request, we can modify the CPU program to automatically close the doors. The time the doors stay open can range from 0-30 seconds. This setting is titled Closing Time on the Data Access Unit (DAU). This power open/power close electro-mechanical operator with its state of the art components and mostly all aluminum construction, make it the lightest and strongest in the industry today. Refer to the Wiring Legend for Terminal Strip Hookup for all open, partial open, close, stop and safety device inputs, which are all Class (2) 24VDC momentary contact (except terminal 9 which must be a maintained contact).; Power supply hookups for both Class (2) 24VDC and 110VAC are also indicated. The PLC then processes all this information, in addition to many other features for proper control of these heavy lead doors, which are patented under US Patent No. 6,177,771 B1. We are Authorized to Mark the NB-500 with the ETL (US and Canada), and CE markings from Intertek Testing Services to assure compliance with UL 325(Control No. 3011624), FCC Part 15 (Emissions) and the following International Standards: EN 60335-1 and -2 (Safety), EN 61000-6-2 (Immunity), EN 61000-6-4 (Emissions), CAN/CSA-C22.2 and ICES-003. The "listing" reports specifically refer to the heavy commercial/industria l doors associated with linear accelerator rooms.