Sea-Fire 131-450 - User Manual

SEA-FIRE MARINE – USA SEA-FIRE EUROPE, LTD
Baltimore, Maryland Hampshire, United Kingdom
Your Onboard Safe Choice www.sea-fire.com www.sea-fire.co.uk
A Division of Metalcraft, Inc.
123-567 Rev. A
Engine Shutdown Restart
System (ESRS)
Installation Instructions
Owner’s Manual
PN: 131-440 (4 Relay Circuits), PN: 131-445 (6 Relay Circuits), and PN: 131-450 (8 Relay Circuits)
Warning: This Sea-Fire Engine Shutdown Restart System has been designed and
tested for use with Sea-Fire automatic and manual fire suppression systems.
Installation must be accomplished by or under the supervision of a qualified marine
electrician who is familiar with American Boat and Yacht Council (ABYC) or other
recognized and accepted marine standards and practices.
Caution: Do not install this device in fuel storage compartments. See the installation
section of this manual for further details.
Read this manual thoroughly and comply with all instructions, warnings, and
cautions prior to installation.
THIS MANUAL IS AN INTEGRAL PART OF THE SYSTEM AND AS SUCH, THE SYSTEM
MUST BE INSTALLED AND MAINTAINED ACCORDINGLY.
RETAIN THIS MANUAL FOR REFERENCE

Summary

General Specifications

Features

Lists key features of the Engine Shutdown Restart System, including automatic shutdown and override modes.

ESRS Installation

Installation Location

Details recommended locations for installing the ESRS unit, emphasizing ventilation and avoiding heat exposure.

Mounting the ESRS Unit

Instructions for physically mounting the ESRS unit using screw holes and connecting the display panel.

ESRS Unit Wiring Installation

Guidance on wiring the ESRS unit, including wire gauge, terminal block connections, and specific inputs/outputs.

Electrical Input;Output Connections

Overview of terminal block connections for system inputs and outputs.

Pressure Switch (PS1) Terminals Connection

Details on connecting the PS1 pressure switch to terminals 1 and 2.

Pressure Switch (PS2) Terminals Connection

Details on connecting the PS2 pressure switch to terminals 3 and 4, including jumper usage.

Power Supply Terminals Connection

Instructions for connecting main, backup, and generator power sources to the ESRS unit.

RJ45 Port Connection

Guidance on connecting the Display Panel to the ESRS unit using the RJ45 port and CAT-5 cable.

Cylinder Supervisory Switch Connection

Instructions for connecting multiple cylinder supervisory pressure switches in series to PS1.

Engine or Machinery Connection

Reference for connecting engines or machinery to the ESRS unit relays based on OEM manuals.

Relay Operation

Relay Contact Specification

Details the specifications for the relays used in the ESRS unit, including contact type, current, and voltage ratings.

Relay Energized State

Describes the state of the relays when the ESRS unit is operational and in standby mode.

Relay De-Energized State

Describes the state of the relays when the ESRS unit is in the shutdown state.

Relay 20 Second Reset

Information on the optional automatic reset timer function for the relays.

Installation Check

Installation Verification Steps

Procedural steps to verify the correct installation and operation of the ESRS unit after power application.

Troubleshooting Common Issues

Guide to identifying and resolving common problems encountered with the ESRS unit, including power, alarm, and reset issues.

Warranty Information

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The document describes the Sea-Fire Engine Shutdown Restart System (ESRS), a low-voltage microcontroller unit designed to integrate with Sea-Fire automatic and manual fire suppression systems. Its primary function is to shut down engines, blowers, generators, dampers, and other machinery in a protected space if a fire or extreme overheating causes the fire suppression system to discharge. This ensures that the fire suppression agent remains in the enclosed compartment at the proper concentration and is not ingested or reduced by running machinery.

Function Description:

The ESRS operates by monitoring pressure switches connected to the fire suppression system. Upon agent discharge, the PS1 (Pressure Switch 1) closed-loop circuit opens, activating an alarm and de-energizing all connected relays. This change in relay state shuts down all machinery connected to the ESRS unit. Visual and audible indications (PS1 LED on the unit, DISCHARGE LED on the Display Panel, and an 85 dB buzzer) alert users to the discharge. The alarm can be silenced by pressing the SILENCE button on either the ESRS unit or the connected Display Panel.

In the event of a discharge or loss of cylinder pressure (indicated by an open PS1 loop), the system can be put into an "override" mode by simultaneously pressing the SILENCE and "Dimmer" buttons. This allows connected machinery to restart. However, the ESRS can only be properly reset to standby mode after the discharged agent cylinder has been refilled/replaced and the SHUTDOWN RESET buttons are pressed. In standby mode, only the green POWER LED on the ESRS and Display Panel remains on.

The ESRS also monitors a second pressure switch, PS2, which can be connected to a High-Temperature, Low-Pressure, or Auxiliary Discharge sensor switch. If the PS2 sensor switch opens, an alarm activates, and both the PS2 LED on the unit and the Second Zone LED on the Display Panel illuminate. Importantly, the relays' state does not change in this scenario, meaning machinery continues to operate. This PS2 circuit alarm can also be silenced with the SILENCE button. The unit is reset after the PS2 circuit condition is remedied by pressing the SHUTDOWN RESET buttons.

Important Technical Specifications:

• Operating Voltage: 12 - 32 VDC
• Backup Power Supply: 12 - 32 VDC
• Power Supply Protection: 3A Fuse
• Internal Voltage Protection: 3 diodes
• Pressure Switches: 2 normally closed inputs (PS1 and PS2)
• Visual Indications: POWER (Green), PS1 (Red), PS2 (Red)
• Buzzer: 85 dB @ 10 cm
• Standby Power Consumption:
  • PN: 131-440 (4 Relay Circuits): 13 VDC, 370 mA; 28 VDC, 180 mA
  • PN: 131-445 (6 Relay Circuits): 13 VDC, 570 mA; 28 VDC, 260 mA
  • PN: 131-450 (8 Relay Circuits): 13 VDC, 750 mA; 28 VDC, 350 mA
• Shutdown (Discharged) Power Consumption (All Models): 13 VDC, 100 mA; 28 VDC, 100 mA
• Enclosure Material: Grey flame retardant ABS (UL94-5VA flame rating with textured cover)
• Enclosure Protection Level: Ingress Protection 66 (IP66)
• Operating Temperature: -7°C/20°F to 54°C/130°F
• Storage Temperature: -7°C/20°F to 54°C/130°F
• Display Connection: CAT-5 VIA RJ45 Socket
• Relays: 5 VDC Form C (SPDT - 1 Form C)
  • Normally Open (N/O): 20A
  • Normally Closed (N/C): 10A
  • Contact Voltage VAC (Maximum allowable): 277VAC
• Connectors: Wago 739, Max wire size 12AWG/2.5 mm
• Dimensions: 7.29 (W) x 4.72(H) x 2.37(D) inch (185.2(W) x 119.9(H) x 60.2(D) mm)
• Weight: 0.6 kg / 1.3 lb
• Mounting: Surface
• Compliant: RoHS, CE

Usage Features:

• Fully Automatic Engine Shutdown: Integrates with fire suppression systems for immediate machinery shutdown upon discharge.
• Shutdown Override Mode: Allows temporary restart of machinery after a discharge for critical operations, though proper system reset requires agent cylinder replacement.
• Visual and Audible Indications: Clear alerts for power-on, agent discharge (PS1), and sensor switch warnings (PS2).
• Compact Construction: Designed for efficient space utilization.
• Optional Time Delay Reset Function: Customizable relay reset timing (contact Sea-Fire Marine for details).
• Multiple Display Panel Support: Connects to compatible Display Panels (e.g., PN: 131-460 to 131-467) via CAT-5 cable, allowing for multiple monitoring points.
• Series Connection for Supervisory Switches: Supports connecting multiple cylinder supervisory pressure switches in series for comprehensive monitoring.
• Dimmer Button: Adjusts the intensity of the Green Power LED on the Display Panel and ESRS Unit.

Maintenance Features:

• Installation Check: Includes steps to verify correct wiring, power application, machinery operation, and proper PS1 and PS2 circuit responses.
• Troubleshooting Guide: Provides a table of common problems, possible causes (e.g., no input power, damaged converter, no continuity in PS1/PS2 circuits, faulty buttons, internal faults), and recommended actions (e.g., recycle power, check voltage, check pressure gauge, remove/re-install jumper, replace unit/display panel).
• Qualified Installation Requirement: Installation must be performed by or under the supervision of a qualified marine electrician familiar with ABYC or other recognized marine standards.
• Environmental Considerations: The unit should be installed in a conveniently accessible and well-ventilated location, protected from excessive heat (above 54°C/130°F) and not in sealed enclosures, to ensure optimal service life.
• Power Source Management: Connects to power sources via a 5A circuit breaker with an ON/OFF switch, allowing the unit to be turned OFF when machinery is OFF and ON when machinery is ON.
• Warranty: One-year limited warranty against defective material and faulty workmanship from the date of retail purchase. Defective Engine Interrupt Systems will be replaced or repaired free of charge upon prepaid return.
• Customer Support: Contact Sea-Fire Customer Support for assistance with approved filling locations after discharge and for additional instructions on optional features.

Sea-Fire 131-450 Specifications

General

Brand	Sea-Fire
Model	131-450
Category	Control Systems
Language	English