GRUNFOS FIRE SYSYTEMS O & M MANUALS - Xact

Dimensions
Drawings for reference only.
Specific GA drawings available on request.
Grundfos Fire Systems
Grundfos Pumps Ltd
Grovebury Road
Leighton Buzzard
Bedfordshire.
LU7 4TL
Tel: 01525 850000
Fax: 01525 775300
email: fire@grundfos.com
www.grundfos.co.uk
GB/FS/08/05
Grundfos FireSAFE
Complies with BS9251:2005

Outline
In Britain each year there are over 60,000
domestic & residential fires which are responsible
for at least 600 deaths and 10, 000 serious injuries.
As a result, there has been a growing awareness
in the UK market of the virtues of a correctly
designed and installed sprinkler system to detect
and control a fire at an early stage, thus providing
a cost effective safeguard against loss of life and
property in such dwellings.
The Grundfos FireSAFE (Safe Active Fire Equipment)
range of pump packages is designed to comply with
the recommendations of draft British Standard,
BS9251:2005.
In some situations, and with the permission of the
Water Utility, it may be possible to connect the
Grundfos FireSAFE set directly to the town water
mains. A dedicated suction pipe will be required, the
diameter of which should match the pump suction as
an absolute minimum.
In situations where the town mains supply cannot be
utilised directly it will be necessary to install a water
storage (break) tank between the mains and the
Grundfos FireSAFE set. Grundfos can offer a suitable
break tank.
The Grundfos FireSAFE supplies water via a riser
system within the building to a series of sprinkler
heads. When the air temperature around a sprinkler
head reaches a predetermined level, the glass bulb
bursts, leading to a loss of system pressure and/or a
water flow. This is detected by a pressure switch or a
flow switch integral to the Grundfos Fire SAFE set,
so activating the pump. Only sprinkler heads affected
directly by the heat source will operate.
Specification Details
Pump Type - Grundfos Horizontal or Vertical
Multistage - sized according to individual
system flow / pressure requirements.
Electrical Supply - 240/1/50 or 400/3/50
The pump unit is supplied on a powder-coated
base, pre-wired and tested with all equipment
needed for automatic operation and also
includes the components normally found in
a proprietary riser assembly.
Key Features
8 Litre Accumulator
Maintains system pressure against minor leakage and allows for
thermal expansion caused by ambient temperature variations.
A pressure relief valve, which is sometimes fitted on riser assemblies,
is therefore not considered necessary.
Dual Pressure Switches for pump control
This assembly allows the pump unit to operate both as a Jockey
pump, and a duty pump. Therefore, if the first pressure switch is
activated, and a flow detected, a volt free contact is activated
connected to a central monitoring / alarm panel.
When the system pressure is restored AND a no flow condition is
detected, the pump will stop and this signal will cease. Should the
second pressure switch be activated, indicative of sprinkler activation,
the set will run until stopped manually.
Flow Switch for integration into the Alarm system
Used in conjunction with pressure switches in order to activate
pump unit via control panel.
Pressure gauge
Fitted next to accumulator to provide visual indication of
system pressure.
Test/Drain point
Drainage point located on main manifold that allows the sprinkler
system to be drained. Also allows for testing of flow meter (and
alarm signal).
Control panel with all functions needed for Automatic operation
The control panel has been specifically designed by Grundfos to
conform with BS9251: 2005. The panel will initiate the pump
upon receipt of a signal from the pressure switch. It will also run
the pump once a month for a few seconds at a time in order to
lubricate the shaft seal and top up the hydraulic accumulator,
thus making the system maintenance-free. There is a manual
TEST button that allows pump rotation at any time without
activating the alarm VFC.
The control panel is fail-safe, so any loss in power will result
in an alarm signal being sent to the alarm panel.
Manual shut off switch for use after full activation
This switch is located on the control panel and will
shut down the pump as required by BS9251: 2005.