Stainless Peripheral Pumps
OPERATING INSTRUCTIONS
Please leave this instruction booklet with the pump as it
contains maintenance and safety information
(Original Instructions)
MODELS
Vertical Suction
RG550-2
INDEX . . . . . . . . . . . . . . . . . Page No
Application . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Description . . . . . . . . . . . . . . . . . . . 3
Limits of Application . . . . . . . . . . . . . . . . . . . 4
Technical Specifi cation . . . . . . . . . . . . . . . . 4
Siting of the Pump/Pipework . . . . . . . . . . . . 4
Electrical Installation . . . . . . . . . . . . . . . . . . 6
INDEX . . . . . . . . . . . . . . . . . Page No
Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Commissioning . . . . . . . . . . . . . . . . . . . . . . 9
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 11
Trouble Shooting Guide . . . . . . . . . . . . . . . . 12
Environment Protection . . . . . . . . . . . . . . . . 12
IMPORTANT NOTES
Please read these instructions fully before starting the
installation:
The installation must comply with the relevant water supply,
electrical and building regulations and be installed by a
competent person.
If in doubt, consult Stuart Turner Ltd.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
APPLICATION
The range of stainless steel peripheral pumps is designed to pump clean fresh water.
Other clean, non aggressive, non explosive liquids with similar characteristics to water may
be pumped. Consult Stuart Turner for such applications.
The pumps can be used for pressure boosting, fluid transfer and distribution. They are
suitable for flooded suction applications. Alternatively a maximum suction lift of 4.6 m is
permitted when using a Stuart footvalve/strainer.
WARNING AGAINST MISUSE
This pump set must not be used for any other application without the
written consent of Stuart Turner Limited. In particular, it must not be
connected directly to the mains water supply, or used outside the
conditions specified in the limits of application.
- 2 -
PRODUCT DESCRIPTION
Motor:
Induction type, totally enclosed fan ventilated cooling*, continuously rated*, class ‘F’
insulation. Motors comply with IEC34-1. Single phase versions incorporate a permanent
capacitor and integral auto resetting thermal overload protection.
The standard range of motors are suitable for a supply of 230V, 1 phase, 50Hz.
Optional motors are available on certain models to suit various voltages and frequencies
(see technical specification for details).
*Variations of rating and enclosure details can be found in the technical specification
section.
Pump
All models are close coupled to motor.
RG550-2 are of single stage, peripheral design, with vertical suction and discharge ports.
Standard pump materials of construction of major wetted parts are as follows: -
Model Body Impeller Shaft Mechanical Seal
All Variants Stainless Steel Stainless Steel Stainless Steel Nitril/Carbon
Ceramic/Stainless Steel
Other seal material options are available on certain models.
- 3 -
Cont ...
LIMITS OF APPLICATION
Part
Model Supply
No
46455 RG550-2 230/1/50 80 4 40 4.6* 40 50 9.5 600 (6) 21 60
46469 RG550-2 230/1/50 80 4 40 4.6* 40 50 9.5 600 (6) 21 60
46470 RG550-2 230/1/50 80 4 40 4.6* 40 50 9.5 600 (6) 21 60
Liquid
Temp.
o
C
Liquid
Temp.
Min.
Max.
o
C
Max.
Ambient
Air Temp
o
C
Max.
Suction
Lift (m)
Max. Head
(Pump Closed
Valve) (m)
50 Hz 60 Hz
Max. Viscosity
(Redwood
No. 1 Scale)
**Max.
Working
Pressure
Centistokes 50 Hz 60 Hz
kPa (bar)
Max. Inlet Head
(m)
Max. No.
Starts/h
* With footvalve fitted.
**Note: Max working pressure is the maximum pressure that can be applied to the
pump internal casing under any installation conditions.
TECHNICAL SPECIFICATION
Part
46455 RG550-2 230/1/50 300 455 2.0 IP44
46469 RG550-2 230/1/50 300 455 2.0 IP44
46470 RG550-2 230/1/50 300 455 2.0 IP44
No
Model Supply
Nominal
Watts
Output
(Motor)
Max. Watts
consumed
50 Hz 60 Hz 50 Hz 60 Hz L W H Suction Delivery
Full Load
(AMPS)
Enc.
Rating
Duty Rating
Continuous
(S1) @ 2.5
l/min & above
Continuous
(S1) @ 2.5
l/min & above
Continuous
(S1) @ 2.5
l/min & above
Dims (mm)
242 126 180 6.3 G¾ M G¾ M
242 126 180 6.3 G¾ M G¾ M
242 126 180 6.3 G¾ M G¾ M
Gross
Weight
(packed)
kg
Connections
Stuart Turner reserve the right to amend the specification in line with its policy of
continuous development of its products.
Note: For information on other voltages/frequencies which are not shown, consult any
supplementary instruction sheet supplied, or the rating label attached to the
pump.
SITING OF THE PUMP/PIPEWORK
WARNINGS:
Pump Location
If possible site the pump in a location where in the unlikely event of a
liquid leak, any spillage is contained or routed to avoid electrics or
areas sensitive to liquid damage.
Care should be taken to protect the pump from frost and freezing.
Ensure pipework to and from pump is independently supported to
prevent stress on the pump inlet and outlet branches.
Do not fit a non-return valve, or devices which contain non-return
valves, in the suction (inlet) pipework to the pump. Exceptions can be
made in the case of suction lift installations when a footvalve is
required.
- 4 -
When a footvalve is required on installations that incorporate
automatic pump control, it is recommended that a suitable pressure
relief valve be fitted in the discharge (outlet) pipework from the pump.
Do not run against a closed valve for periods longer than 5 minutes.
Do not allow plastic pump parts to come into contact with oil or
cellulose based paints, paint thinners or strippers, acid based
descalents or aggressive cleaning agents.
Do not introduce solder flux to pumps or pump parts manufactured
from plastic. All solder joints should be completed and flux residues
removed prior to pump connection.
Always install isolating valves to both suction and delivery pipework.
The motor casing can become very hot under normal operating
conditions. Care should be taken to ensure it cannot be touched
during operation.
Site the pump in a dry, frost-free horizontal position where it cannot be sprayed with
water and as close to the liquid source as possible.
The pump enclosure must be ventilated and there should be a minimum clearance of
80 mm between the pump and housing on all sides.
To prevent loss of pressure through pipework, use pipe size to match pump whenever
possible, minimising 90° bends.
It must be ensured that storage capacity of the liquid supply is adequate for the flow
rates required by the pump.
The pipework feeds to the storage tank should be of adequate size to ensure
replenishment rate of tank is sufficient to meet the needs of the pump.
Isolating valves should be fitted in suction and delivery pipework to enable easy isolation
and access to the pump.
When the pump is to be installed in areas where there is a risk of debris or scale build up
within the system, it is recommended that the inlet pipework is fitted with an inline strainer.
Pump Mounted Above Liquid Source (Suction Lift)
The pumps can be used in a suction lift installation providing the height of lift is within the
limits specified in the limits of application section.
A footvalve and strainer must always be used and the suction pipework size should be
22 mm throughout.
Lay the suction piping over the shortest possible distance and ensure there is a constant
rise from the liquid source to the pump. Any high spots will cause air pockets to form,
reducing system efficiency.
Ensure all joints in suction pipework are completely airtight. Failure to comply will result
in loss of prime.
The intake of the footvalve/strainer should be positioned such that is cannot be blocked
with debris or silt that are frequently found in the bottom of sumps and wells.
- 5 -
Cont ...
When a footvalve is installed on installations that incorporate automatic pump control,
it is recommended that a suitable pressure relief valve be fitted in the discharge (outlet)
pipework from the pump.
Fig. 1
ELECTRICAL INSTALLATION
WARNINGS:
The electrical installation must be carried out in accordance with the
current national electrical regulations by a competent person.
Before starting work on the electrical installation ensure the power
supply is isolated.
Where any of the pumps are installed in an area where there is a risk
of water spillage it is recommended that a residual current circuit
breaker having a rated current not exceeding 30 mA, be installed in
the supply circuit. This may be part of a consumer unit or a separate
unit.
This appliance must be earthed.
The motor and wiring must not be exposed to water.
Do not allow the supply cord to contact hot surfaces, including the
motor shell, pump body or pipework. The cord should be safely
routed and secured by cable clips.
RG550-2
INLET
OUTLET
The standard single phase pumps are suitable for a supply of 230V, 1 Phase, 50Hz.
Other voltages and frequencies are available on certain models and it is therefore very
important to ensure the voltage and frequency on the pump rating plate matches the
supply.
When installing a 230V, 1 phase, pump in the United Kingdom, means for disconnection
must be incorporated in the fixed wiring according to the Wiring Rules. This can be done
by permanently connecting the pump to the mains supply via a double pole switched, fused
connection unit complying with BS 1363-4.
When installing a 110V, 1 phase pump it must be in accordance with the current electrical
regulations that apply to the installation.
All motors exceeding 370 watt output should be provided with control equipment
incorporating means for protection against overload.
The spur box (fused connection unit) or starter to which the pump is connected should
be mounted in an easily accessible position and labelled if confusion is possible to allow
easy isolation of the unit.
All pumps are continuously rated.
- 6 -
Earthing
This appliance must be earthed via the supply cord, which must be correctly connected
to the earth point located in the terminal box.
Metallic pipework must have supplementary earth bonding where the continuity has
been broken by flexible hoses or plastic components. Adjacent suction and delivery pipes
should be fitted with earthing clamps to BS 951 and connected with earthing wire size
4 mm² (Fig. 2).
Diagram of earth
continuity connection.
Fig. 2
Certain installations may require additional earthing arrangements such as equipotential
bonding. Reference should be made to the relevant regulations concerning this subject to
ensure compliance.
Wiring
This product range must be permanently connected to fixed wiring and is provided with a
set of terminals which allow the connection of a flexible supply cord.
Select a cord and fuse size based on the motor full load current and the surrounding
conditions.
For information on cable fitting and connection, consult the wiring diagram and cable
gland and supply cord fitting instructions.
WARNING: This appliance must be earthed.
Fuses
The power cord must be sourced and supplied by the installer. Cable selection and fuse
size should be based on the motor full load current and the surrounding conditions.
- 7 -
Cont ...
Cable Gland & Supply Cord Fitting Instructions (Single phase range)
The cable gland assembly Fig. 5 (items 1 & 2) provides the necessary protection against
ingress of solid objects and moisture as well as providing cable retention.
Assembly instructions are as follows: -
1. Ensure selected cable sheath
diameter is within the permitted range
(6.5 to 9.5 mm).
2. Strip and prepare the cable sheath
E
and insulators as shown in Fig. 3.
3. Disassemble cable gland as shown in
Fig. 5 and insert cable into position
ensuring ‘O’-ring (item 1) is placed
over the cable before the clamping
insert (item 2) is tightened.
4. Consolidate the stranded conductor
ends by twisting and shape the earth conductor
as shown in Fig. 4 (item 3).
5. Remove earth terminal post clamping
components and assemble as shown in
Fig. 4 ensuring shaped conductor is
orientated as shown and all strands of
the conductor are clamped between
the washers.
6. Insert and secure live and neutral
conductors ensuring all conductor
strands are clamped.
7. Confirm cable routing is as shown in
Fig. 5 and assemble and secure
terminal box lid.
N
L
12
110
80
8
(Dims. in mm)
8
70
Fig. 3
3
Fig. 4
- 8 -
2
1
Fig. 5
Wiring Diagrams
The internal wiring within the terminal box are routed and secured to
ensure compliance with the electrical standard EN 60335-1. It is essential
that any disturbance of this internal wiring is avoided and the factory
routing and securing of all internal wiring is always maintained.
Fig. 6
TERMINAL
BLOCK
BROWN
LINK WIRE
BLUE
230 VAC/1PH/50Hz SUPPLY
BROWN
N
L
MAIN WINDING
THERMOTRIP
START WINDING
GREEN / YELLOW
E
BLUE
CAPACITOR
BLACK
NOISE
The equivalent continuous A-weighted sound pressure level from the pumpset does not
exceed 70 dB(A) at a distance of one metre.
COMMISSIONING
WARNINGS:
The motor casing can become very hot under normal operating
conditions, care should be taken to ensure it cannot be touched
during operation.
Do not run pump without guards and terminal box lid correctly fitted.
The pump chamber must be full of liquid at all times. Seal damage
will result if the pump runs dry.
1. System Flushing
Some pumps incorporate plastic and rubber components that must not
come into contact with solder flux, acid-based descalents or aggressive
cleaning agents. The pipework system should be flushed out prior to the
pump being connected, to ensure any contaminants/chemical residues and
foreign bodies are removed from elsewhere in the system.
- 9 -
Cont ...
2. Liquid Supply
Always ensure that liquid storage capacity is adequate to meet the demand.
Ensure the pump chamber is full of liquid before starting the pump. Failure
to do this could result in seal damage. To ensure dry running does not
occur the pumps must be primed as described in the priming section. Do
not run pump dry.
3. Ensure electrical supply is compatible with the details that are stated on the pump
rating plate. (The wrong voltage or frequency can be dangerous and may damage
the pump.)
4. Priming
a) Vertical suction models (flooded suction)
The pump must be primed (filled with liquid) before starting. Turn on liquid
supply, prime and vent the pump by unscrewing the priming plug (Fig. 7)
slowly until all air escapes and liquid emerges. Re-tighten the plug.
PRIMING PLUG PRIMING PLUGPRIMING PLUG
OUTLET
INLET
RG550-2
c/w Body Rotated
(Special Build)
Fig. 7
INLET
OUTLET
b) All models (suction lift installation)
Prime the suction pipework and pump by filling with liquid via the pump discharge
connection, or by filling the suction pipework before attaching to the pump, then
fill the pump.
5. Starting
a) Switch on power to the pump which will now be operational.
b) Carefully check pump and pipework for leaks whilst pump running and stationary
before leaving the installation unattended.
For Further Technical Support
Note: When pumps are installed in another manufacturers original equipment, please
contact the manufacturer for advice.
Phone the Stuart Turner Pump Assist team on 0844 98 000 97. Our staff are trained to
help and advise you over the phone or arrange for a service engineer to call.
- 10 -
Cont ...
MAINTENANCE
WARNINGS:
Care should be taken to protect the pump from frost and
freezing.
Pump Location
If possible site the pump in a location where in the unlikely
event of a liquid leak, any spillage is contained or routed to
avoid electrics or areas sensitive to water damage.
1. No routine maintenance is required but provision should be made for easy access to
the pump to allow for repairs due to normal wear and tear.
2. Disconnect electrical supply before working on pump.
3. Turn off liquid supplies to the pump and release pressure by opening outlets before
attempting maintenance.
4. If the installation is fitted with a footvalve and strainer or inline suction strainer, the
strainer must be cleaned as necessary to ensure the pump has unrestricted flow.
5. After maintenance is completed, refer to commissioning section for instructions on
restarting pump.
Cleaners, Disinfectants and Descalents
On installations where chemical disinfectants or descalents are periodically
used, the compatibility of the chemical solution regarding the pump must be
considered.
Acid based descalents and aggressive cleaning agents must not come into
contact with the pump. The pump must be removed from the system prior to the
use of these products. The system should be flushed to remove all chemicals
before the pump is re-connected.
If in any doubt as to the suitability of the chemical solutions refer to Stuart
Turner Ltd.
STORAGE
If this product is not installed immediately on receipt, store in a dry, frost and vibration
free location in its original packaging.
- 11 -
TROUBLE SHOOTING GUIDE
Symptoms Probable Cause Recommended Action
Pump will not start. Electrical supply. Check power to motor.
Check the circuit breaker is set.
Check the correct fuse is being used.
Pump runs, but no
liquid.
Starter thermal
overload tripped.
Internal motor
thermotrip activated.
Air locked. Bleed pipework and pump to clear air.
No liquid supply. Check the supply valves are turned on.
Connections
reversed.
No flooded suction. Check the pump has a flooded suction
Check overload in starter (if applicable).
Investigate cause of problem.
Wait for thermotrip to cool and autoreset. Investigate cause of problem.
Check outlet not restricted or blocked.
Check liquid connections are on the right
way round.
and is primed.
If a suction lift exists fit a Stuart footvalve/
strainer and ensure suction is airtight.
Prime the pump and suction pipe (see
commissioning section).
ENVIRONMENT PROTECTION
Your appliance contains valuable materials which can be recovered or recycled.
At the end of the products’ useful life, please leave it at an appropriate local civic waste
collection point.
- 12 -
YOUR 1 YEAR GUARANTEE
Stuart Pumps are guaranteed by Stuart Turner Limited to be free from defects in
materials or workmanship for the applicable guarantee period from the date of purchase.
The applicable guarantee period is stated in the installation booklet supplied with the
pump. Within the guarantee period we will repair, free of charge, any defects in the pump
resulting from faults in material or workmanship, repairing, exchanging parts or exchanging
the whole unit as we may reasonably decide.
Not covered by this guarantee: Damage arising from incorrect installation, improper use,
unauthorised repair, normal wear and tear and defects which have a negligible effect on
the value or operation of the pump.
Reasonable evidence must be supplied that the pump has been purchased within the
applicable guarantee period prior to the date of claim (such as proof of purchase or the
pump serial number).
This guarantee is in addition to your statutory rights as a consumer. If you are in any
doubt as to these rights, please contact your local Trading Standards Department or
Citizen’s Advice Bureau.
In the event of a claim please telephone Stuart Turner Limited on 0844 980 0097 or
return your pump and flexible hoses with accessories removed, plugs, pipes etc. If you
have any doubt about removing a pump, please consult a professional.
Proof of purchase should accompany the returned pump to avoid delay in investigation
and dealing with your claim.
- 13 -
NOTES
- 14 -
NOTES
- 15 -
DECLARATION OF CONFORMITY
2006/42/EC
BS EN ISO 12100-1, BS EN ISO 12100-2, BS EN 809
2006/95/EC
BS EN 60335-1, BS EN 60335-2-41, EN 50366
2004/108/EC
BS EN 55014-1, BS EN 55014-2, BS EN 55022, BS EN 61000-3-2, BS EN 61000-3-3,
BS EN 61000-4-2, BS EN 61000-4-3, BS EN 61000-4-4, BS EN 61000-4-5, BS EN 61000-4-6,
BS EN 61000-4-11
IT IS HEREBY CERTIFIED THAT THE STUART ELECTRIC MOTOR DRIVEN PUMP AS
SERIAL NUMBER BELOW, COMPLIES WITH THE ESSENTIAL REQUIREMENTS OF THE
ABOVE E.E.C. DIRECTIVES.
RESPONSIBLE PERSON
AND MANUFACTURER STUART TURNER LIMITED
HENLEY-ON-THAMES, OXFORDSHIRE
RG9 2AD ENGLAND.
Signed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuart Turner are an approved company to BS EN ISO 9001:2000
Customer Relationship Manager
Stuart Turner Ltd, Henley-on-Thames, Oxfordshire RG9 2AD ENGLAND
Tel: +44 (0) 1491 572655, Fax: +44 (0) 1491 573704
email: pumps@stuart-turner.co.uk web: www.stuart-turner.co.uk
V.A.T. REG. No. 199 0987 92. Registered in England No. 88368. Registered Offi ce: Market Place, Henley-on-Thames
Issue No. 3910/4-14 Pt. No. 17730
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