AUTOMATIC FLOW SWITCH PUMPS
OPERATING INSTRUCTIONS
Please leave this instruction booklet with the pump as it
contains maintenance and safety information
(Original Instructions)
MODELS
Vertical Suction End Suction
RGFL4000
RGFL6000
RGDFL6000
ESFL4000
ESFL6000
KFL9-2
KFL12-2
LFL5-4S
LFL7-4S
TFL6-2
TFL12-2
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page No
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Limits of Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Technical Specifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Siting of the Pump/Pipework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Environment Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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.
APPLICATION
The range of Automatic Flow Switch pumps is designed for pressure boosting
applications in vented stored hot or cold clean water systems where under gravity some
flow is available.
Other clean, non aggressive, non explosive liquids with similar characteristics to water
may be pumped, consult Stuart Turner for such applications.
- 2 -
Cont ...
WARNING AGAINST MISUSE
This pump set must not be used for any other application without the
written consent of Stuart Turner Limited and, in particular, must not be
connected directly to the mains water supply or used outside the
conditions specified in the limits of application.
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.
PRODUCT DESCRIPTION
Electric motor driven pump complete with automatic control system consisting of flow
switches and electronic controls.
Motor
Induction type, totally enclosed fan ventilated cooling*, class ‘F’ insulation, permanent
capacitor, complying with BS5000 or IEC34-1. All models have 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.
RGFL range are of single stage, peripheral design, with vertical suction and discharge
ports.
RGDFL6000 consists of twin pump heads situated at each end of the motor. The pump
design is of the single stage, peripheral design, with vertical suction and discharge ports.
ESFL range are of single stage, end suction, peripheral design.
KFL range are of single stage, end suction, centrifugal design.
LFL range are of four stage, end suction, centrifugal design.
TFL range are of two stage, end suction, centrifugal design.
Standard pump materials of construction of major wetted parts are as follows:-
Model Body Impeller Shaft Mechanical Seal
RGFL range Brass Brass Stainless Steel
ESFL range Brass Brass Stainless Steel
RGDFL6000 Brass Brass Stainless Steel
KFL range Brass Acetal Stainless Steel
LFL range
TFL range
Noryl
Stainless Steel
Noryl
Stainless Steel
Polycarbonate Stainless Steel
Polycarbonate Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
Nitrile/Carbon
Ceramic/Stainless Steel
- 3 -
General:
All models use a flow switch assembly which is directly connected to the pump discharge
port. The wetted materials of construction are brass, stainless steel, strontium ferrite, nitrile
and acetal.
All models are supplied with a mains connecting lead and resilient mounting foot.
LIMITS OF APPLICATION
Max.
Model
RGFL4000 80 4 40 Flooded 60 600 (6) 14 30 0.6
RGFL6000 80 4 40 Flooded 60 600 (6) 14 40.6 0.6
RGDFL6000 80 4 40 Flooded 60 600 (6) 14 41.6 0.6
ESFL4000 80 4 40 Flooded 60 600 (6) 14 29.5 0.6
ESFL6000 80 4 40 Flooded 60 600 (6) 14 40 0.6
KFL9-2 80 4 40 Flooded 60 600 (6) 14 9 1
KFL12-2 80 4 40 Flooded 60 600 (6) 14 13.9 1
LFL5-4S 65 4 40 Flooded 60 700 (7) 14 44 1
LFL7-4S 65 4 40 Flooded 60 700 (7) 14 48 1
TFL6-2 65 4 40 Flooded 60 400 (4) 10 29.8 1
TFL12-2 65 4 40 Flooded 60 400 (4) 7 32 1
Liquid
Temp.
o
C
Min.
Liquid
Temp.
o
C
Max.
Ambient
Air Temp
o
C
Inlet
Head
(Suction)
Max.
No of
Starts/h
**Max.
Working
Pressure
kPa (bar)
Max.
Inlet
Head
(m)
Max.
Head (Pump
Closed Valve)
(m)
Cut in
(l/min)
*Note: Max working pressure is the maximum pressure that can be applied to the
pump internal casing under any installation conditions.
Flow
- 4 -
Cont ...
TECHNICAL SPECIFICATION
Nominal
Model
RGFL4000 230/1/50 350 120 1.5 IP44
RGFL6000 230/1/50 540 300 2.4 IP44 203 126 202 5.7 1
RGDFL6000 230/1/50 860 550 3.4 IP44 301 126 201 8.4
ESFL4000 230/1/50 360 120 1.6 IP44
ESFL6000 230/1/50 550 300 2.5 IP44 232 126 221 5.9 1
KFL9-2 230/1/50 265 180 1.2 IP44 Continuous 242 133 231 6.5 1
KFL12-2 230/1/50 485 250 2.1 IP44 Continuous 242 133 231 6.7 1
LFL5-4S 230/1/50 925 600 4.1 IP44 Continuous 401 202 307 11.1 4
LFL7-4S 230/1/50 1085 760 5.0 IP44 Continuous 401 202 307 12.5 4
TFL6-2 230/1/50 890 530 3.9 IP44 Continuous 326 210 304 9.9 2
TFL12-2 230/1/50 1155 800 5.3 IP44 Continuous 350 210 304 11.1 2
Supply
Max. Watts
Consumed
Watts
Output
(Motor)
Full
Load
Current
(AMPS)
Enc.
Rating
Duty
Rating
Continuous
(S1) @ 2.5 l/min
& above
Continuous
(S1) @ 4.5 l/min
& above
Gross
Dims (mm)
LWH*
203 126 202 5.1 1
232 126 221 5.6 1
Weight
(packed)
kg
No. of
Pump
Stages
(twin pump)
1
*Height not inclusive of resilient mounting foot.
Note: For information on other voltages/frequencies which are not shown, consult
any supplementary instruction sheet supplied, or rating label attached to the
pump.
Stuart Turner reserve the right to amend the specification in line with its policy of
continuous development of its products.
- 5 -
Cont ...
CONNECTIONS
Pump Type Inlet Outlet Fig. No
ESFL G1 Female G1 Female 2
RGFL G¾ Female G¾ Male 1
RGDFL6000 G¾ Female G¾ Male 1
KFL G1 Female G1 Female 3
LFL G1¼ Female G1 Female 5
TFL G 1 Female G1 Female 4
Inlet
Outlet
Priming
Plug
Priming
Plug
Inlet
Fig. 1 Fig. 2 Fig. 3
Outlet
Outlet
Priming
Plug
Inlet
Outlet
Outlet
Inlet
Priming
Plug
Fig. 4 Fig. 5
Priming
Plug
- 6 -
Inlet
SITING OF THE PUMP / PIPEWORK
WARNINGS:
The motor casing can become very hot under normal operating
conditions, care should be taken to ensure it cannot be touched
during operation.
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 pump from frost and freezing.
Always install isolating valves to both suction and delivery pipework.
Pump Location (General)
100 mm
min
Diagram showing typical cold
water boosting installation.
Max. inlet head (consult limits of application section)
Min. inlet head 1 m
Fig. 6
Locate the pump in dry, frost free position where it cannot be sprayed with water. It
should be positioned horizontally on its anti-vibration mounting feet and should not be
screwed down. It should be positioned as close to the liquid source as possible having a
minimum flooded suction head of 1 metre at all times.
Ensure the liquid flow is in the direction of the arrow that is marked on the flow switch
reed clamp (vertically upwards).
For the pump to function correctly, it must be installed in a positive head position, a
minimum gravity flow of approx. 0.6 l/min (RGFL/RGDFL/ESFL models) or approx. 1 l/min
(KFL, LFL and TFL models) is required from the highest outlet to operate the built-in flow
switch. This is normally achieved with a static head of 100 mm from base of storage tank
to the highest outlet in the system (Fig. 6).
Before deciding where to position the unit, check to ensure the static inlet head of liquid
above the pump (Fig. 6), does not exceed the maximum given in the limits of application
section.
The pump enclosure must be ventilated and there should be a minimum clearance of
80 mm between pump and housing on all sides.
The resilient anti-vibration mounting feet which are supplied as standard, are a
precaution to reduce noise transmission, however care must be taken when mounting the
pump that any noise is not amplified through loose panels, pipework or other mounting
medium.
- 7 -
Noise transmission in pipework can be reduced by fitting flexible hoses to pump inlet and
outlet ports.
An installation pack which includes flexible hoses is available, consult Stuart Turner for
details.
We do not recommend location of the pumps in the roof space, since air locks can easily
result. If there is no alternative, please contact our technical sales department for advice.
Pump Location (Hot Water Installation)
The preferred pump location is at floor level next to the hot water cylinder or a level that
is below the secondary tapping that feeds the pump. This will ensure the pump has access
to an air free water supply which is important for trouble free operation (Fig. 7).
100 mm
min
hot water
services
Preferred Pump Location
with pump at a level below
draw off tapping in cylinder.
preferred
Max. inlet head (consult limits of application section)
Min. inlet head 1 m
area
Fig. 7
Where secondary circuits are in use, the pump should be sited as close as possible to
the draw off points from the circuit.
Pipework Connections (General)
WARNINGS
Ensure pipework to and from pump is independently supported to
prevent forces being transferred to inlet and outlet branches of pump.
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.
Do not allow contact with oil or cellulose based paints, paint thinners
or strippers, acid based descalents or aggressive cleaning agents.
Do not allow scale or debris to enter pump. Fit inline strainers to
eliminate the problem in systems at risk.
Do not install a non-return valve, or devices
which contain non-return valves, in the
suction (inlet) pipework to the pump. The
pump must be free to vent to the supply
tanks at all times.
- 8 -
Cont ...
It must be ensured that the storage capacity of the liquid supply is adequate for the flow
rates required by the pump.
The pipework feed to the storage tank should be of adequate size to ensure
replenishment rate of tank is sufficient to meet the needs of the pump.
The pump must be supplied with a dedicated feed direct from the liquid storage tank.
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.
To prevent loss of pressure through pipework, use a pipe size to match pump whenever
possible, minimising 90° bends.
The pipe runs from the pump to the highest outlet should not be routed above the level of
the storage system.
Pipework Connections (Hot Water)
When a hot water cylinder or storage tank is used, ensure the pipework size from the
cold water storage to the hot water storage is of adequate size.
The pump must be supplied with dedicated feed direct from the hot water cylinder.
Pipework Connections (Hot Water)
(KFL, TFL and LFL range)
These pumps should have a minimum of 28 mm pipework throughout the system.
The supply must be air free and connection to the cylinder can be via an Essex flange or
by one of the following methods shown.
When method of connection is to be via the expansion pipe, the cold water storage
cistern should be at least 1.5 metres above the top of the hot water cylinder.
Essex flange
28 mm
45°
Off expansion
pipe, off-set
45°, 28 mm
pipework
(As close to the cylinder as possible)
Off vertical
expansion
pipe, 28 mm
pipework
Fig. 8
Cont ...
- 9 -
Pipework Connections (Hot Water)
(RGFL, RGDFL and ESFL range)
These pumps should have a minimum of 22 mm pipework throughout the system.
The supply must be air free and connection to the cylinder can be made by one of the
following methods shown.
When method of connection is to be via the expansion pipe, the cold water storage
cistern should be at least 1 metre above the top of the hot water cylinder.
Off expansion
pipe with rising
28 mm offset
reducing to
22 mm pipework
to pump and
expansion pipe.
Off expansion
pipe with rising
22 mm offset
and 22 mm
pipework to
pump.
ELECTRICAL INSTALLATION
WARNINGS:
The electrical installation must be carried out in accordance with the
current national electrical regulations and installed by a competent
person.
In the interests of electrical safety a 30 mA residual current device
(R.C.D.) should be installed in the supply circuit. This may be part of
a consumer unit or a separate unit.
Before starting work on the electrical installation ensure the power
supply is isolated.
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.
Off vertical
expansion pipe
with 22 mm
pipework to
pump.
Factory installed G ¾
secondary tapping
with 22 mm pipework
to pump.
or
Site installed G ¾
Essex Flange with
22 mm pipework to
pump.
Warix Flange with
22 mm pipework
to pump.
Fig. 9
The motor fitted to this pump is suitable for a single phase 230V, 1 phase, 50Hz supply.
It is thermally protected by an integral auto resetting thermotrip for your safety. The pumps
are rated for the duty listed in the technical specification section.
Cont ...
- 10 -
Electrical Connection
The motor is provided with a factory fitted supply cord. This must be permanently
connected to the fixed wiring of the mains supply. Means for disconnection must be
incorporated in the fixed wiring in accordance with the wiring rules.
A suitable method of connection would be via a double pole switched, fused connection
unit complying with BS 1363-4, protected with a fuse (see fuse section).
The connection unit should be mounted in an easily accessible position and should be
labelled if confusion is possible, to allow easy identification of the pump isolating switch.
Earthing
This appliance must be earthed via the supply cord, which must be correctly connected
to the earth point located in the terminal box.
Copper or 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. 10).
Diagram of earth
continuity connection.
Fig. 10
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.
Cont ...
- 11 -
Wiring Of Connection Unit
WARNING: This appliance must be earthed.
The wires in the mains lead (supply cord) are coloured in accordance with the following
code:
Green and Yellow:- Earth. Blue:- Neutral. Brown:- Live
As the colours of the wires in the mains lead of this appliance may not correspond with
the coloured markings identifying the terminals in your connection unit proceed as follows:
The wire which is coloured green and yellow must be connected to the terminal in the
connection unit which is marked with the letter ‘E’ or by the earth symbol
or coloured
green or green and yellow.
The wire which is coloured blue must be connected to the terminal which is marked with
the letter ‘N’ or coloured black.
The wire which is coloured brown must be connected to the terminal which is marked
with the letter ‘L’ or coloured red.
Fuses
The following fuse size should be used with the appropriate pump:
Wiring Diagrams
The supply cord and 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.
Parallel wiring of two single pumps is not recommended.
Model Fuse Size (AMPS)
RGDFL 13
RGFL 5
ESFL 5
KFL 5
LFL 13
TFL 13
- 12 -
Cont ...
LINK WIRE (BLUE)
N
MAIN WINDING
THERMOTRIP
BROWN
MA
START WINDING
L
N
BLUE
CAPACITOR
BLACK
BLUE
BROWN
GREEN/YELLOW
BROWN
LINK WIRE (BLUE)
N
L
E
NA
M
MAIN WINDING
THERMOTRIP
CAPACITOR
START WINDING
L
N
BLUE
BROWN
BLUE
BLACK
N
L
E
FLOWSWITCH
REED (S2)
S1
S1S2S2
Fig. 11 Fig. 12
FLOWSWITCH
REED (S1)
230 VAC/1PH/50Hz SUPPLY
BLUE
BROWN
N
A
M
GREEN / YELLOW
CAPACITOR
BLUE
BROWN
N
GREEN / YELLOW
BLACK
BLACK
MOTOR
S2
S1
BROWN
WHITE
N
L
E
GREEN / YELLOW
FLOWSWITCH
S2
S1
230 VAC/1PH/50Hz SUPPLY
BLUE
REED (S2)
E
Model Fig. No
RGDFL 11
RGFL 12
ESFL 12
KFL 12
LFL 13
TFL 13
E
Fig. 13
S2
FLOWSWITCH
REED (S2)
S2LS1S1
230 VAC/1PH/50Hz SUPPLY
Cont ...
- 13 -
Supply Cord Replacement
If the supply cord is to be changed or is damaged, it must be replaced with a special cord
assembly available from Stuart Turner or one of their approved repairers.
On disassembly note the cord retention and routing system. Reassemble to the same
pattern.
For information on cable connection consult the wiring diagram and cable gland fitting
instructions.
Intermediate Connecting Cord Replacement
(Applicable to TFL and LFL ranges only)
These pumps incorporate an additional cord which connects the main terminal box to
the motor terminal box. If this cord is damaged, it must be replaced with a special cord
assembly available from Stuart Turner or one of their approved repairers.
On disassembly note the cord retention and routing system. Reassemble to the same
pattern.
For information on cable connection consult the wiring diagram.
Supply Cord Extension
The pumps are fitted with a supply cord to the following specification:
RGFL, RGDFL, ESFL & KFL range:- . . . . . HO5VV-F3 G 0.75 mm², 6 Amp rating.
LFL & TFL range:- . . . . . . . . . . . . . . . . . . . HO7RN-F3 G 1.0 mm², 10 Amp rating.
If the supply cord is to be extended, a cord of the same specification should be used.
Any connections or junction boxes used should be specifically suited for the application
and installed in accordance with the manufacturers instructions.
Cable Gland Fitting Instructions
1
2
Fig. 14
The cable gland assembly Fig. 14 (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) Cable sheath diameter permitted range (6.5 to 9.5 mm).
2) Disassemble cable gland as shown in Fig. 14 and insert cable into position ensuring
‘O’-ring (item1) is placed over cable before the clamping insert (item 2) is tightened.
1
2
- 14 -
Cont ...
NOISE
The equivalent continuous A-weighted sound pressure level at a distance of 1 metre
from the pumpset does not exceed 70 dB(A).
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 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.
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 priming section. Do not
run pump dry.
3. Priming
a) All models
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. 15)
slowly until all air escapes and liquid emerges. Re-tighten the plug.
- 15 -
Cont ...
Priming
Priming
Plug
RGFL, RGDFL ESFL KFL
Plug
Priming
Plug
Priming
Plug
TFL LFL
Fig. 15
Priming
Plug
b) Vertical suction models
This pump range are self venting and hence no priming plugs are fitted. Turn on
liquid supply and open outlet valve to allow pump to fill and vent.
4. Pre-Start Check
Always ensure the pump is in a positive head position with flooded suction. A gravity
flow of approx. 0.6 l/min (RGFL/ESFL) or approx. 1 l/min (KFL, LFL & TFL) from the
highest outlet is required to operate the integral flow switch.
5. Starting
a) Switch on power and open terminal fitting. Pump should start and stop upon
demand.
b) Open and close all outlets in turn associated with the pump allowing liquid to flow
from each outlet until all air is purged. As each outlet is opened and closed the
pump will start and stop respectively.
c) Any tap or control valve within the system when opened and closed will now turn
the pump on/off. Check system for leaks, if clear the system is now operating
correctly.
Cont ...
- 16 -
d) Carefully check pump and pipework for leaks whilst pump running and stationary
before leaving the installation unattended.
For Further Technical Support
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.
Note: When pumps are installed in another manufacturers original equipment, please
contact the manufacturer for advice.
MAINTENANCE
WARNINGS:
Care should be taken to protect 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 liquid 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 an 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 reconnected.
If in any doubt as to the suitability of the chemical solutions, please contact our
Pump Assist helpline.
STORAGE
If this product is not installed immediately on receipt, ensure that it is stored in a dry, frost
and vibration free location in its original packaging.
- 17 -
Cont ...
TROUBLE SHOOTING GUIDE
Symptoms Probable Cause Recommended Action
Pump will not start. No liquid. Check required gravity flow of liquid is available to the fittings
of approx. 0.6 l/min (RGFL/RGDFL/ESFL models) or approx.
1 l/min (KFL, LFL & TFL models).
Liquid supply. If NO... check liquid level in the supply tank and all stopcocks
are open.
Filter blocked. Remove and clean system filters.
Electrical supply. Check wiring connections.
If gravity flow exists inline with requirements - check that all
electric switches are on.
Is the correct fuse fitted?
Check circuit breaker is set.
Faulty reed switch/PCB Refer to circuit test as detailed in Fig. 16.
Internal motor thermotrip
activated.
Pump starts when outlets are off.
or
Pump cycles (hunts) on/off
frequently.
No hot water. Air locked. Bleed pump to air.
Pump runs on when all terminal
outlets are closed.
Leak in system Check tap washers, w/c valve washers, pipe joints.
Water feed. Check cold feed to hot water cylinder.
Boiler is switched off. Check boiler is switched On.
Faulty thermostatic mixer valve. Consult makers instructions.
Leak in system. Check tap washers, w/c valve washers, pipe joints.
Reed clamp out of position. Ensure reed clamp is fitted correctly in location groove
Jammed flow switch. Remove flow switch reed clamp whilst pump is running. If
Wait for thermotrip to auto reset and check that duty point and
run time is within specification (see Technical Section).
Check water level in the supply tank and all stopcocks are
open.
Check cylinder thermostat is set.
Is immersion heater operating?
Check temperature of cylinder?
(Fig. 16).
pump stops proceed to isolate the pump electrically and
hydraulically and remove brass housing that contains float.
Check for free movement.
Faulty reed switch or P.C.B. Remove flow switch reed clamp whilst pump is running.
If pump continues to run, this indicates a closed circuit in
either the flow switch reed or P.C.B. in the terminal box, these
should be checked electrically.
Reduced flow/performance. Blocked inlet strainers. Clean inlet strainers (see maintenance section).
- 18 -
Cont ...
Flow Switch Circuit Test
1. First confirm visually that the flow switch reed clamp has not been dislodged during
handling or installation. The clamp must be fully located within its flow switch body
groove as shown.
2. To carry out the following test you will need to obtain a magnet, a typical fridge
magnet is suitable.
3. Ensure the power supply is switched on.
4. Position the magnet directly in front of the reed clamp as shown. If pump does not
start, then slowly move the magnet up and down to a position that exceeds the extent
of the reed clamp. The pump should instantaneously start at some point during this
extent of movement. If this does not happen, this indicates a possible fault with the
reed switch or the P.C.B which is located within the terminal box. These should be
checked electrically. Consult Stuart Turner for further instructions.
Body
Reed Clamp
Magnet
Groove
Fig. 16
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.
- 19 -
Cont ...
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
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.
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. 5010/1-02 Pt. No. 19323
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