UNISTREAM WATER COOLED DIESEL DRIVEN PUMPSET
National Fire Protection Association (NFPA)
)
SPP Pumps Limited, 1420 Lakeview, Arlington Business Park, Theale, Reading, Berkshire, RG7 4SA
OPERATION
The main diesel pump automatically starts when the controller receives a signal from the system
pressure switch due to a system pressure reduction greater than that which the jockey pump can cope
with and continues to operate until manually stopped. Initiation can also occur if the main electric
pump fails to start or by other initiators.
PUMP Design
The pump units are taken from the SPP end suction back-pull-out range of centrifugal units being
manufactured in accordance with DIN 24255 and FM approved and / or UL listed where necessary
or required.
The suction and discharge branches being cast integral with the volute casing gives a back-pull-out
facility permitting the removal of back cover, stuffing box and impeller without disturbance of casing or
pipework.
The impeller, shrouded with balancing vanes, is machined and hand finished smooth and keyed to the
shaft. The wear ring gives fine clearances for high efficiency to be maintained. The shaft is machined
to close tolerances and of amply proportions to transmit the maximum load. The sleeve extends from
the impeller through the stuffing box to protect the shaft against wear, erosion and corrosion and is
renewable.
The stuffing box is of deep design and soft packed for proper sealing
The grease lubricated bearings are mounted in a housing spigoted to provide perfect alignment
Connections
The end suction and top discharge branches are flanged and drilled to BS4504 PN16
Construction
The casing is cast iron and case wear ring and impeller are bronze. The carbon steel shaft is fitted
with a bronze sleeve.
ENGINE Design
The engine meets the requirements of National Fire Protection Association (NFPA20), where
applicable / required is FM approved / UL Listed and is of the multi cylinder, four stroke, compression
ignition, mechanical injection type, capable of operating continuously on full load at an ambient
temperature of 25 Deg C and altitude up to 90m for a period of six hours. Above this temperature /
altitude the engine produces less power.
It is equipped with two methods of starting, Automatic and Manual, both by means of a battery
powered electric starter motor.
Features
- Starter motor and dual start solenoids
- Manual start
Our policy is one of continuous improvement and we reserve the right to alter the specifications of our offered products at anytime without notice.
UNISTREAM WATER COOLED DIESEL DRIVEN PUMPSET
National Fire Protection Association (NFPA)
)
SPP Pumps Limited, 1420 Lakeview, Arlington Business Park, Theale, Reading, Berkshire, RG7 4SA
- Manual stop control
- Lube oil filter, pump and cooler
- Fuel filter, pump and injection system
- Water pump and engine water heater
- Blankets or metal guard on manifold
- Charging alternator, belt and guard
- Engine mounted Instrument panel with
> Tachometer
> Water temperature gauge
> Hourmeter
> Oil pressure gauge
- Air cleaner
- Flexible fuel connections
- Adjustable throttle control, tamper proof
- Tube & shell type heat exchanger
- Flywheel
- Switches for instruments
> Two voltmeters
Cooling System
The engine cooling system is of the closed circuit type, including a heat exchanger, engine driven
circulating pump and jacket temperature regulating device.
Raw water to the heat exchanger is taken from the discharge of the fire pump through a threaded rigid
piping cooling line system fitted with:2
Manual shut off valves.
1
Flushing type strainer.
1
Pressure regulator.
1
Automatic electric solenoid valve (not required on vertical turbine pump).
1
Pressure gauge.
By-pass cooling line installed around the above assembly fitted with:2
Manual shut off valves.
1
Flushing type strainer.
Battery System
Two sets of lead acid batteries are mounted below the controller and connected by leads to the engine
starting system. They are rack supported above the floor, secured against displacement and located
where they are not subject to mechanical injury or flooding with water and readily accessible for
servicing.
CONTROLLER Design
The Controller Panel meets the requirements of National Fire Protection Association (NFPA20), is FM
approved, to provide start up and monitoring of the diesel pumpset and alarm indication of any
problems.
It is a six attempt engine control unit suitable for operating diesel engine fitted with twin battery
systems connected negative to earth.
The unit operates off a 220 – 240 volt, 1 phase, 50 / 60Hz supply. Two separate and independent
constant voltage battery chargers are provided to serve the ‘automatic’ and ‘manual’ batteries, each
charger rated for 10 amps maximum
Our policy is one of continuous improvement and we reserve the right to alter the specifications of our offered products at anytime without notice.
UNISTREAM WATER COOLED DIESEL DRIVEN PUMPSET
National Fire Protection Association (NFPA)
)
SPP Pumps Limited, 1420 Lakeview, Arlington Business Park, Theale, Reading, Berkshire, RG7 4SA
An Operator Interface Device (OID) is fitted with 4 lines by 20 character backlit display and 12
pushbuttons for easy screen navigation which enables full programming of settings and operation of
the controller. LED lamp test, alarm reset, controller test and horn silencing are also accessed through
this OID.
The system status data (including system pressure, start pressure, battery 1 voltage, battery 2
voltage, battery 1 charger amps, battery 2 charger amps, oil pressure, water temperature, current time
& date, system events and notifications such as remote / local start etc, number of starts, total hours
run, time remaining on sequential start, etc) is displayed on the OID and LED annunciator.
The microprocessor based logic with real time / date clock has capability of minimum 14 day running
without DC power.
Data logging carried out in two separate storage logs for pressure and events for up to 30 days is
readable through OID or available on an SD memory card.
Volt free changeover contacts provided for
- Engine running
- Pump on demand
- Fault on engine / controller
- Controller in manual
- Failed to start
All wiring terminates at clearly labelled termination points.
Enclosure
All the components are housed in a dust and damp protecting single section sheet steel IP54
enclosure having a hinged interlocked front cover. The enclosure is skid mounted and designed for
bottom cable entry.
Features
Internally mounted are:
- Two fully automatic 10A Battery chargers
- Microprocessor
- Motherboard
- Engine heater supply protection circuit breaker
- RS485 serial port
Externally mounted are:
- Isolator interlocked door handle
- Start / stop pushbuttons
- Auto / off / manual selector switch
- Operator Interface Device (OID)
- LED annunciator panel
- Key operated Mode switch
- ‘Breakglass’ box for key
- Autostart pressure switch
MOUNTING
The pump is long coupled to the engine using a flexible Coupling to allow removal of either pump or
engine without disturbing the other or the system pipework. All rotating parts are guarded.
Our policy is one of continuous improvement and we reserve the right to alter the specifications of our offered products at anytime without notice.
UNISTREAM WATER COOLED DIESEL DRIVEN PUMPSET
National Fire Protection Association (NFPA)
)
SPP Pumps Limited, 1420 Lakeview, Arlington Business Park, Theale, Reading, Berkshire, RG7 4SA
Pump, Engine, Controller and battery system are mounted on a substantial steel baseplate suitably
designed for gouting in.
All interconnecting pipework and wiring is carried out in the factory under clean controlled conditions
and once built is tested as a complete operational unit.
ACCESSORIES
- Compound Pressure / Vacuum Gauge on Suction branch and Pressure Gauge on Discharge branch
- Exhaust system supplied in kit form comprising industrial silencer, 1m flexible pipe, 2m rigid pipe,
90oC bend and set of clamps.
All equipment is CE Marked.
Our policy is one of continuous improvement and we reserve the right to alter the specifications of our offered products at anytime without notice.