Aquestia USA

Electric Manual Reset (EMR)

Electric Manual Reset (EMR)

• For use with OCV electric activation deluge valves.
• Holds deluge valve “open” after initial opening sequence.
• Resets deluge valve by operating local lever.
• Installed between deluge soleniod and accelerator.
• Includes red name tag with operation instructions.

OCV’s Electric Manual Reset (EMR) feature is used on OCV solenoid valves used in deluge and pre-action fire suppressionsystems. The feature assures that a deluge valve will stay fully open during and after a fire event. To re-close a delugevalve with this feature, manual operation of the reset lever is required. This feature is offered in a wide variety of materials forfreshwater and seawater applications. The main valve external trim selection dictates the materials used in this feature.

OPERATION

The main deluge valve is opened by operating a solenoid. The shifted solenoid ports pressurize anaccelerator bonnet which then vents the main valve diaphragm chamber. When the main valvediaphragm chamber is vented and the deluge valve opens, water is introduced into the sprinkler line. Atthis time, the deluge valve is locked in the open position. The EMR check valve and normally closedlever have locked system pressure onto the accelerator bonnet which holds the deluge valve open. Toremove this pressure from the accelerator bonnet and re-close the deluge valve, the EMR lever shouldbe opened until the deluge valve re-seats. These instructions are meant to be generic and ultimatelythe specific model operation and maintenance manual should be referenced for full reset function.