SiFire-EN-50/250-242-26,5D

Pressure boosting system as a fully automatic compact unit for fire fighting purposes in accordance with EN 12845.

Consisting of a pump with horizontal base frame — EN 733 — with spacer coupling, diesel motor and diaphragm pressure vessel (capacity: 20 l) and one switch cabinet, fixed to a robust support structure.

Model SC-Fire D for the diesel motor, equipped with Smart Controller, solid construction made of special profiled parts with cut-outs for forklift trucks and hooks to ensure trouble-free, safe transportation. Height-adjustable bracket for the outlet manifold and special base plate for the diesel motor which reduces the transfer of vibrations considerably and increases the reliability and service life.

A circuit with dual pressure switch, pressure gauge, non-return valve, valve (secured from use by unauthorised personnel) for the main pump for automatic start. The cables are concealed in the construction and protected against bumps and cuts. Equipped with a diaphragm installed directly on the main pump housing as standard, to prevent overheating in the event of zero flow.

Fuel tank with level sensor and sufficient volume for six hours of autonomous operation, as well as 2 batteries on the base frame and battery charging units on the SC-Fire switch cabinet.

Independent anti-vibration base frame for the diesel motor pump.

SC-Fire D switchgear for fire extinguishing systems according to EN 12845.

Switchgear integrated in a sheet metal enclosure in accordance with protection class IP54.

Very high quality control system and particularly easy operation thanks to SC Fire control, with symbol-based LC display, simple user interface with clear menu layout, pressure and rotary switches for quick adjustment of parameters. Communicative controller for monitoring system operation.

The system has been mounted on the base frame with wires and pipes are ready for connection.

Inflow pressure:

The maximum inlet pressure must be taken into account when designing the system configuration (see Technical data). The maximum permissible inlet pressure is calculated from the maximum operating pressure of the system minus the maximum pumping head of the pump at Q = 0. For sprinkler systems in accordance with EN 12845, the water pressure should not exceed 12 bar. In sprinkler systems with a pronounced slope, in which the difference in height between the highest and lowest sprinkler is more than 45 m, the water pressure can be higher than 12 bar at the pump outlet or in the piping, provided that all of the system components are designed for this pressure level.

Installation of the pressure boosting pump under suction conditions.

For the main pump, it is necessary to install a supply tank with connection to the discharge pipe above the pump.

Volume flow

Up to 750 m³/h (208 l/s) system configuration for the main pump.

Switchgear/control device for fire water supply systems

Wilo-Control SC-Fire D (main pump with diesel motor)

Hardware:

Fully electronic central control unit, installed in a painted steel enclosure, protection class IP54, control and display devices on the front door

Features and functions:

The design of the control device depends on the power of the connected pump. The device comprises the following components:

• Main switch: For switching the switchgear on and off. (For unauthorised use in the event of a fire)
• Display: Display built into the door of the switch cabinet for operation and display purposes. Shows the operating data and the operating status of the pump and controller through a combination of symbols and numerical codes. Menu selection and parameter input is effected via the red button
• Microprocessor with Soft PLC: Microprocessor PLC (Soft PLC), realised through programming, the power supply unit and the I/O wiring. The programming configuration depends on the system and the sprinkler system
• Indicators: Longlife indicator lights which indicate the following: Operational readiness of the pump, operation of the pump, activation of the pressure switch, activation of the float switch, deactivation of the automatic mode, deactivation of the motor heater, temperature alarm, oil pressure alarm, false start, belt alarm, low fuel level, collective errors, manual stop
• Buttons: Push button for manual stop, start battery A, start battery B, the lamp test and acknowledgement of alarms and warning messages
• Fuse protection: Protective fuses for heating and battery charging unit in the switch cabinet
• Motor startup: Automatic starting sequence with 6 start attempts via two alternating batteries or directly via the start button on the front panel
• Motor protection: Monitoring of typical operating parameters of the diesel motor (temperature, oil pressure, etc.) without stopping
• Monitoring of the water supply: By means of a float switch to ensure a minimum water level of 2/3 of the supply tank is always maintained
• Monitoring of the power supply: Error message from the battery charging unit in the event of a failure of the power supply
• Combined signal report: All types of error are displayed via a common error indicator
• Individual signal report: Important individual errors are indicated via individual error indicators
• Error message and acknowledgement: All error messages are displayed via LEDs, shown in the display as an error code and must be acknowledged

Software:

• Factory-programmed for fully automatic operation
• Information regarding motor speed, charging voltage and charging current.
• Menu navigation with symbol representation

Conforms to the following standards:

• Fixed Firefighting Systems — Automatic Sprinkler Systems — (EN 12845), part for pumps with diesel motor
• Electrical Equipment of Machines (EN 60204-1)
• Low-voltage Switchgear and Controlgear Assemblies (EN 61439-1 and EN 61439-2)
• EMC — Electromagnetic Compatibility for Industrial Environments (EN 61000-6-2)
• EMC — Emission Standard for Residential, Commercial and Light-Industrial Environments (EN 61000-6-3)

Function description:

Wilo SC-Fire D control devices can be used to control pumps with a diesel motor, sensors for pump management and the level of information. The SC-unit is controlled via a microprocessor with Soft PLC. It is used to control and regulate the necessary functions of pressure boosting systems for fire fighting in accordance with EN 12845 for test purposes and operation of the sprinkler system.

The operating logic for the fire extinguishing unit is based on the cascade calibration of the pressure switches for starting the pump.

If a large amount of water is requested due to the opening of one or more circuits or due to a defective sprinkler, the pressure in the system decreases. The SC-Fire controller then initiates a startup of the diesel motor pump. As soon as the sprinkler circuit or gate valve via which the sprinkler heads are supplied is closed, holding pressure (resting pressure) is built up in the system. The stop buttons on the SC-Fire must then be actuated to stop the pump.

Additional information:

A significant advantage offered by the Smart Controller SC-Fire is the user friendliness of the tried and tested Wilo red-button technology. At the heart of the SC is the Soft PLC programmable logic controller, which is based exclusively on Wilo's wealth of experience. All programming is implemented internally. These next generation control devices can therefore be used flexibly and fulfil customer-specific requirements in all markets.