Stuart Turner RG550-2 User Manual
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.
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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 -
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