Control unit MC-1

The TYCO Model MC-1 (MC-2) Manual Control Station provides a tamper resistant means for emergency release (that is, operation) of TYCO Automatic Water Control Valves. Interconnection with the valves may be direct via hydraulic (wet) pilot line or indirect via pneumatic (dry) pilot line to a Model DP-1 Dry Pilot Actuator. The MC-2 Manual Control Station is a modified MC-1 designed for use as a trim component for the Model DV-5a Automatic Water Control Valve. The Model MC-1 Manual Control Station described herein must be installed and maintained in compliance with this document, as well as with the applicable standards of the NATIONAL FIRE PROTECTION ASSOCIATION, in addition to the standards of any other authorities having jurisdiction. Failure to do so may impair the performance of these devices. The owner is responsible for maintaining their fire protection system and devices in proper operating condition. The installing contractor or sprinkler manufacturer should be contacted with any questions. Operating instructions are imprinted on the Cover, and the Cover is hinged to the Box and is held up in its normally closed position by a polystyrene Break Rod. The Break Rod is inserted through corresponding holes in the top of the Cover and interior of the Box, and the Break Rod does not extend above the top of the Cover so as to prevent unnoticed tampering (that is, the Cover can only be opened by breaking the Break Rod). After actuation of the MC-1, interference between a boss on the interior of the Cover and the Operating Lever prevents closing of the Cover, before the Operating Lever is raised.