Stuart Turner PH 35 ES Guide

Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the home owner as it contains
important guarantee, maintenance and safety information
Read this manual carefully before commencing installation.
This manual covers the following products:
PH 35 ES B
Pt. No. 46523
PH 45 ES B
Pt. No. 46524
50 Hz
STUART
2
CE compliant product

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PRODUCT DESCRIPTION
Electric motor driven pump complete with flow switch, pressure switch, pressure
vessel and electronic control.
APPLICATION
The Pressure Control range is designed for pressure boosting applications in vented
stored hot or cold, clean fresh water systems, where under gravity, no flow is available.
Other clean non aggressive, non explosive liquids with similar characteristics to water
may be pumped, consult Stuart Turner for such applications.
STORAGE
If this product is not to be installed immediately on receipt, ensure that it is stored in a
dry, frost and vibration free location in its original packaging.
CONTENTS Page
Checklist ...........................................................5
Pre-Installation Assembly ..............................................6
Important Facts – read before commencing installation ......................8
Location ............................................................9
Pump Connections ...................................................11
Electrical Installation ..................................................12
Commissioning ......................................................14
Maintenance .........................................................16
Technical Specification ................................................17
Trouble Shooting .....................................................19
Guarantee ..........................................................22

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WARNINGS:
zThis 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.
zThis appliance can be used by children aged from
8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given
supervision or instruction concerning use of the
appliance in a safe way and understand the hazards
involved.
zChildren shall not play with the appliance.
zThis product should not be used for the supply of
water to more than one dwelling (house, apartment,
flat).
zCleaning and user maintenance shall not be made by
children without supervision.
zMaximum head (closed valve) PH 35 ES B-30 metres,
PH 45 ES B-41 metres.
zThe motor casing can become very hot under normal
operating conditions. Care must be taken to ensure it
cannot be touched during operation.
zThe electrical installation must be carried out
in accordance with the current national electrical
regulations.
zThe electrical installation must be installed by a
qualified person.
zIn the interests of electrical safety a 30 mA residual
current device (R.C.D. not supplied) should be
installed in the supply circuit. This may be part of a
consumer unit or a separate unit.
zBefore starting work on the electrical supply ensure
power supply is isolated.

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zDO 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.
zThis appliance must be earthed via the supply cord,
which must be correctly connected to the earth
point located in the terminal box.
zThe 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 prior to any
disturbance of this internal wiring, all cable routing
and securing details are carefully noted to ensure
re-assembly to the same factory pattern is always
maintained.
zIf 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.
Please read installation details carefully as they are intended to ensure this product
provides long, trouble free service. Failure to install the unit in accordance with the
installation instructions will lead to invalidation of the warranty.

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CHECKLIST
Your product may vary slightly from the picture above.
Item Description Qty Item Description Qty
Pump 1 Pressure Vessel & ‘O’-ring 1
AB
IMPORTANT: With the pump removed from its packaging check for any damage
prior to installation. If any damage is found contact Stuart Turner Ltd within 24
hours of receipt.
Fig. 1
B
A
Note: This image is for
reference only

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PREINSTALLATION ASSEMBLY
Pressure Check and Assembly of Pressure Vessel
a) Certain models are supplied in two parts, the main pump and the pressure vessel.
The pressure vessel is pre-charged with air at the factory (see table below). This
pressure should be checked at the Schrader valve (Fig. 2) using a tyre pressure
gauge and adjusted if necessary using a car or bicycle pump prior to installation.
b) To assemble the vessel (when applicable), remove protective plastic cap from
fitting point. Ensure that the ‘O’-ring is present and correctly fitted in the location
groove at the bottom of the fitting point. Screw the pressure vessel clockwise into
the fitting point until hand tight to achieve a water tight connection.
NOTE: Do not over tighten pressure vessel.
Fig. 2
Detail view of
‘O’-Ring groove
in fitting point
‘O’-Ring
Schrader valve
(under cap)
Pressure vessel
‘O’-Ring
Fitting point
Model Air Precharge
bar (psi)
All
Models 0.9 (13)
Note: This image is for reference only

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Re-positioning of Pressure Vessel
The pressure vessel can be rotated to alternative positions (Fig. 4) in the event of the
factory fitted position being unsuitable for a specific installation.
a) Remove pressure vessel by unscrewing anti-clockwise.
b) Using a 2 mm allen key, carefully loosen all three retaining grub screws by two
turns (Fig. 3).
c) Warning – Care must be taken when re-positioning the pressure vessel to
ensure no strain is placed upon the pressure
switch or reed switch cables.
The flow switch assembly can now be carefully
rotated to an alternative position
(Fig. 4).
d) Ensure all three grub screws are
re-tightened securely to a torque of
2.2 Nm (1.62 lbf feet).
e) Re-fit the pressure vessel
ensuring the ‘O’-ring seal is
in place (see pre-installation
section).
Fig. 3
Grub Screws
(3 off)
Outlet Tower can be swivelled at
this joint line after loosening the
3 equi-spaced grub screws
Motor
Factory fitted position
PH 35 ES B,
PH 45 ES B
Area for alternative fitting positions
Fig. 4
Note: These images are for reference only

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1 IMPORTANT FACTS: READ BEFORE COMMENCING PUMP INSTALLATION
A Water storage capacity.
1.11 The hot and cold water storage capacity must be sufficient to meet the flow
rates required by the pumped equipment and any other water using fittings
and appliances, which may be operated simultaneously.
1.12 Ensure the pump is primed as described in the priming section before
starting, damage to the shaft seal will result otherwise. See Section 5 –
Commissioning.
B Water temperature
The water entering the pump must be controlled as follows:
1.13 The maximum allowable water temperature is 65 oC.
1.14 The minimum allowable water temperature is 4 oC.
1.15 DO NOT fit a pump if the hot water is heated via a method whereby the water
temperature cannot be controlled, such as solar or solid fuel you must
consult the TechAssist team on [phone].
C Pipework – General
1.16 Secure pipework: Ensure pipework to and from pump is independently
supported & clipped to prevent forces being transferred to inlet and outlet
branches of pump.
1.17 Flux: Solder joints must be completed and flux residues removed prior to
pump installation (flux damage will void any warranty).
1.18 Pipework design: Care should be taken in the design of pipework runs to
minimize the risk of air locks e.g. use drawn bends rather than 90obends.
1.19 DO NOT introduce solder flux to pump or pump parts manufactured
from plastic.
1.20 DO NOT allow contact with oil or cellulose based paints, paint thinners
or strippers, acid based descalents or aggressive cleaning agents.
1.21 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 tank at all times.
1.22 DO NOT bend flexible hoses (not supplied but available from Stuart
Turner) beyond 30o. They must be installed as straight as possible.
1.23 DO NOT connect this pump to the mains water supply.
D Plumbing Installation Regulations
1.24 The plumbing installation must comply with the current water and building
regulations.
1.25 The plumbing installation must be installed by a qualified person.
E Pressure vessel
1.26 Pressure vessel is charged at the factory see Pre-Installation Assembly on
page 5.

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2 LOCATION  GENERAL
2.11 Access: For emergencies and maintenance the pump must be
easily accessible.
2.12 Protection: The pump must be located in a dry position, frost free
and protected from freezing, particularly when installed in a loft
(not recommended).
2.13 Ventilation: Ensure an adequate air flow to cool the pump.
Separate the pump from other appliances that generate heat. An
80 mm (3 “) air gap must be maintained around the pump.
2.14 Safety: The motor casing can become very hot under normal
operating conditions. Care must be taken to ensure it cannot be
touched during operation.
2.15 Water retention: Site the pump in a location where in the unlikely
event of a water leak, any spillage is contained or routed to avoid
electrics or areas sensitive to water damage.
2.16 Static inlet pressure: Before deciding where to position the unit, check to
ensure the static inlet and outlet heads of water above the pump (Fig. 5), does
not exceed the maximum permitted limits.
2.17 Pump position: The pump must be positioned as close to the water source as
possible. Ensure the pump is mounted in a position that allows easy access to
the box terminal if required.
2.18 Ambient temperature: The pump must be sited in a location where the
maximum ambient temperature does not exceed 40 oC.
2.19 Pipework: For optimum performance pipework MUST be 22 mm.
Pipework should only reduce to 15 mm when entering terminal fitting.
2.20 Static outlet pressure: The static outlet head must also be within the maximum
requirement (Fig. 6).
2.21 Noise: Care must be taken when mounting the pump that any noise is not
amplified through loose panels or pipework. Do not screw down the pump.
2.22 Direction of flow: Ensure the water flow is in the direction of the arrow that is
marked on the flow switch reed clamp (vertically upwards).
2.23 Flexible hoses: Use only Stuart Turner hoses (not supplied), if used ensure
they do not come into contact with solder flux.
2.24 Isolating valves: Separate isolating valves (non restrictive) must be fitted to
allow easy pump service.

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2.25 Pump Mounted Below Liquid Source (Flooded Suction Installation):
2.26 Before deciding where to locate the unit, check to ensure the static inlet head
(Fig. 5) meets the minimum requirement of 1 metre and does not exceed the
maximum given in the limits of application section.
2.27 The static outlet head (Fig. 5) must also be within the maximum requirement
of 13 metres for all models.
2.28 Pump Mounted Above Liquid Source (Suction Lift Installation):
2.29 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 and the liquid
to be pumped is cold water (for applications other than cold water contact
Stuart Turner).
Fig. 6
Diagram showing typical Pressure Control
installation with suction lift.
Max. suction lift 4.6 m
Max. static outlet pressure 13 m (PH ES B only)
Fig. 5
Diagram showing typical Pressure Control
installation with flooded suction.
Max. static inlet pressure (consult technical specification section)
Max. static outlet pressure 13 m (PH ES B only)
Negative head
Min. static inlet pressure 1m

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2.30 Before deciding where to locate the unit, check to ensure the static outlet
head (Fig. 8) does not exceed the maximum requirements of 13 metres for all
models.
2.31 A footvalve and strainer must always be used and the suction pipework size
must match the pump.
2.32 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.
2.33 Ensure all joints in suction pipework are completely airtight. Failure to comply
will result in loss of prime.
2.34 The intake of the footvalve/strainer should be positioned such that it cannot
be blocked with debris or silt that are frequently found in the bottom of
sumps and wells.
2.35 When a footvalve is installed in the suction pipework, it is recommended that
suitable pressure relief valve be fitted in the discharge (outlet) pipework from
the pump.
3 PUMP CONNECTIONS
Model Inlet
(Pump)
Outlet Fig. No.
PH 35 ES B G 1 Female G 1 Female 7
PH 45 ES B G 1 Female G 1 Female 7
Fig. 7
Reed
Switch
Assembly
Inlet
Outlet
Note: This image is
for reference only

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4.17 Earthing: This appliance must be earthed
via the supply cord, which must be
correctly connected to the earth point located in the terminal box.
4.18 Pipework: Copper or metallic pipework must have supplementary earth
bonding where the continuity has been broken by flexible hoses or plastic
components.
4.19 Additional earthing: 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.
4.20 Connections: The pump must be permanently connected to the fixed wiring
of the mains supply using the factory fitted supply cord, via a double pole
switched fused spur off the ring main and NOT connected to the boiler or the
immersion heater circuits.
4.21 Wiring Of Connection Unit:
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:
zThe 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.
zThe wire which is coloured blue must be connected to the terminal which
is marked with the letter N or coloured black.
zThe wire which is coloured brown must be connected to the terminal
which is marked with the letter L or coloured red.
4 ELECTRICAL INSTALLATION
4.11 Regulations: The electrical installation must be carried out in
accordance with the current national electrical regulations and
installed by a qualified person.
4.12 Safety: In the interests of electrical safety a 30 mA residual current
device (R.C.D. not supplied) should be installed in the supply circuit.
This may be part of a consumer unit or a separate unit.
4.13 Before starting work on the electrical supply ensure power supply is
isolated.
4.14 The motor and wiring must not be exposed to water.
4.15 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.
4.16 Adjacent pipes: Adjacent suction and
delivery pipes should be fitted with
earthing clamps in accordance with
current regulations (Fig. 8).
Fig. 8
Diagram of
earth continuity
connection.

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4.22 Wiring Diagram:
4.23 Fuses: The following fuse size should be used with the appropriate pump.
Model Fuse Size (AMPS)
All models 5
4.24 Supply Cord Replacement:
If the supply cord needs to be replaced, cord selection should be chosen
in accordance with the current involved, surrounding conditions and
recommended fuse size. For information on cable fitting and connection,
consult the wiring diagram and cable gland fitting instructions.
4.25 Cable Gland Fitting Instructions:
To enable correct assembly of the
cable gland, the ‘O’-ring (Fig. 11 item 1)
must be placed over the cable before the
clamping insert (Fig. 11 item 2) can be
tightened as shown.
Note: Cable diameter range:- 6.5 mm to
9.5 mm.
4.26 Supply Cord Extension:
The pumps are fitted with a supply cord to the following specifications:-
All models:- .................... HO5VV-F3 G 0.75 mm – 6 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.
MAIN WINDING
THERMOTRIP CAPACITOR
START WINDING
BLUE
BROWN
BLACK
GREEN/
YELLOW
BLUE
BROWN L
M
N
N
S3 S3
LE
N
FLOWSWITCH
REED (S3)
S1S1
PRESSURE
SWITCH (S1)
230 VAC/1PH/50Hz
SUPPLY
BLUE
BLUE
PH 35 ES B
Fig. 9
Fig. 11
1
2
MAIN WINDING
THERMOTRIP CAPACITOR
START WINDING
BLUE
BROWN
BLACK
GREEN/
YELLOW
BLUE
BROWN L
M
N
N
S3 S3
LE
N
FLOWSWITCH
REED (S3)
S1S1
PRESSURE
SWITCH (S1)
230 VAC/1PH/50Hz
SUPPLY
BLUE
PH 45 ES B
Fig. 10

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5 COMMISSIONING
5.11 System Flushing: This pump-set incorporates 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.
5.12 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.
5.13 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.)
5.14 Priming:
a) Flooded suction installation
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. 12) slowly until all air escapes and liquid emerges. Re-tighten plug.
b) Suction lift installation
A footvalve and strainer must be fitted to the end of the inlet pipework.
Prime the suction pipework by filling before connecting to the pump.
Prime the pump by filling via the priming plug (Fig. 12).
Outlet
Inlet
Priming
Plug
PH 35 ES B,
PH 45 ES B
Fig. 12
Note: This image is for
reference only

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5.15 Starting The Pump:
a) Ensure all outlets are closed, turn power supply ‘on’ – pump will start,
pressurise the system then stop.
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.
Note: After closing the outlet there will be a small time delay before the
pump stops, which is normal.
c) Any tap or control valve within the system when opened and closed will
now turn the pump on/off. Providing this is the case the system is now
operating correctly.
d) Carefully check pump and pipework for leaks whilst pump running and
stationary before leaving the installation unattended.
5.16 For further technical support: Phone the Stuart Turner TechAssist team
on [phone]. Our staff are trained to help and advise you over
the phone.
Note: When pumps are installed in another manufacturers original equipment,
please contact the manufacturer for advice.

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6 MAINTENANCE
6.11 Disconnect electrical supply before working on pump.
6.12 Turn off liquid supplies to the pump and release pressure by opening liquid
outlets before attempting maintenance.
6.13 Inlet strainers and footvalve strainers when fitted may require periodical
cleaning. The frequency of this operation is dependent upon installation
conditions.
6.14 Water scale: As water is heated scale deposits are released in areas of hard
water, scale can cause the mechanical seal to stick if left without use for
long periods. We recommend the pump is run for at least 5 minutes every
four weeks to “exercise” all working parts. Run on cool water.
6.15 After maintenance is completed, refer to the starting and commissioning
sections for instructions on re-starting pump.
6.16 No other routine maintenance is required.
6.17 Cleaners, disinfectants and descalents:
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, please
contact our TechAssist helpline on [phone].

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7 TECHNICAL SPECIFICATION
Stuart Turner reserve the right to amend the specification in line with its policy of
continuous development of its products.
*Note: The maximum pressure that can be applied to the pump under any
installation conditions.
Pump Model
PH 35 ES B
50 Hz
46523
PH 45 ES B
50 Hz
46524
General Guarantee 2 years
WRAS approval Approved materials
Approvals CE
Features Pump type Peripheral
Pump control Pressure/flow switch
Anti-vibration feet ü ü
Run on Timer 3 sec 3 sec
Dry run protection ü ü
Priming vent plug ü ü
Typical noise 61 dB(A) 64 dB(A)
Materials Pump body Brass
Impeller Brass
Mechanical seal EPDM / PTFE /Al. Oxide
Performance Maximum head – closed valve 3.0 bar (30 metres) 4.1 bar (41 metres)
Performance @ 9 l/min 2.0 bar (20 metres) 3.2 bar (32 metres)
Performance @ 18 l/min 1.2 bar (12 metres) 2.2 bar (22 metres)
Maximum flow 33 l/min 42 l/min
Minimum static inlet pressure 0.1 bar (1 metre)
Maximum static inlet pressure 1.4 bar (14 metres)
Maximum static outlet pressure 1.3 bar (13 metres)
Maximum working pressure* 600 kPa (6 bar)
Maximum ambient air temperature 40 oC
Min / Max water temperature** Min 4 oC / Max 65 oC
Pressure vessel air pre-charge 0.9 bar (13 psi)
Maximum suction lift*** 4.6 metres
Connections Pump connections G 1 female
Motor Type Induction, auto-reset thermal trip
Duty rating Continuous (S1) @ 5 l/min and above
Electrical Power supply (Vac/Ph/Hz) 230 V a.c. / 1 / 50 Hz
Power consumption – P1 450 Watts 665 Watts
Current – full load 1.95 Amps 2.9 Amps
Fuse rating 5 Amps
Power cable length 1.5 metres (pre-wired)
Physical Enclosure protection IP44
Length 255 mm 257 mm
Width 133.5 mm
Height – excluding hoses 292 mm
Weight – including fittings 6.0 Kg 7.5 Kg

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**Note: A stored water temperature of 60 °C is considered sufficient to meet all
normal requirements and will minimize deposition of scale in hard water
areas.
***Note: A suction lift of up to 4.6 metres can be achieved if a footvalve and
strainer is used.
7.11 Noise: The equivalent continuous A-weighted sound pressure level at a
distance of 1 metre from the pump does not exceed 70 dB(A).

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8 TROUBLE SHOOTING GUIDE
Symptoms Probable Cause Recommended Action
Pump will not start. Electrical supply. Check power supply.
Check fuse (see fuse section).
Check circuit breaker is set.
Check wiring connections.
Pump Jammed. If motor ‘Buzzes’ switch off power and contact Stuart
Turner.
Damaged pressure switch. Turn off power.
Release system water pressure.
Turn on power, pump should start. If NOT contact Stuart
Turner.
Recommended static inlet/
outlet heads exceeded.
Re-position pump (see pump location section).
Internal motor thermotrip
activated.
Wait for thermotrip to auto-reset and check that duty
point and run time is within specification (see technical
specification).
Reduced/intermittent flow. Incorrect or no anti-aeration
flange fitted
Check that the installation complies with installation
instructions.
Incorrect pipe sizes. Check for correct pipe sizing, see Page 8 – Section 2.19.
Blocked inlet filters. Clean inlet filters (see maintenance section).
Hot water temperature set
too high.
Reduce cylinder stat setting to 60 oC max.
Blocked shower head spray
plate
Clean in accordance with manufacturers instructions.
No hot water. Air locked water feed. Vent hot water pump of air.
Check cold feed to hot water cylinder.
Check water level in cold water tank and that all stopcocks
and isolating valves are open.
Heat source not operating. Check boiler is switched ‘on’.
Check cylinder thermostat.
Check immersion heater.
Check cylinder contains hot water.
All hot water has been used. Check tank volume is adequate.
Faulty thermostatic mixer
valve.
Consult makers instructions.
Pump runs on with outlets
closed.
Leak in system. Check tap washers, w/c valve washers, pipe joints.
Damaged reed switch, P.C.B
or pressure switch.
If pump continues to run, this indicates a closed circuit in
either the flow switch reed, pressure switch or P.C.B. in the
terminal box. Contact Stuart Turner.
Jammed flow switch. Remove outlet hoses and check that flow switch sits in
lowest position. Check float for free movement.
or
Pump cycles (hunts) on/off
frequently.
Low pressure in pressure
vessel.
Check pressure in pressure vessel (see maintenance
section).
Debris under non-return valve
sealing face.
Run at full flow to try and flush away debris or remove,
clean or replace non-return valve.
Flexible hose leaks Not fitted correctly. Check that the hose is pushed firmly onto the pump inlet/
outlet connections and pipework.
Damaged ‘O’-rings. Check copper pipe ends are cleanly cut and deburred.

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8.11 Dry Run Protection: This pump is fitted with a safety control circuit, which
will detect the following fault condition:
zDry running caused by water starvation to the pump.
Should the pump run out of water it will stop as part of a “protective logic
sequence”, detailed below.
The fault should be rectified before re-starting the pump. Check that there
is sufficient water supply to the pump and also ensure that all terminal fitting
outlets are closed.
8.12 Protective Logic Sequence: If water starvation occurs and the power supply
to the pump remains uninterrupted, the pump controller will perform the
following protective sequence.
1) If the pump detects water starvation, it will stop operation after a 1 minute
period.
2) The pump will remain in the off condition for a period of 5 minutes.
3) The pump will then re-start and if the water starvation condition remains
present, the pump will then stop operation after a 1 minute period.
4) The pump will remain in the off condition for a period of 5 minutes.
5) The pump will then re-start and if the water starvation condition remains
present, the pump will then stop operation after a 1 minute period.
6) The pump will remain in the off condition for a period of 5 minutes.
7) The pump will then re-start and if the water starvation condition remains
present, the pump will then stop operation after a 1 minute period.
8) After three consecutive resets are performed the pump will remain in the
off condition indefinitely.
9) To restart the pump, the power supply should be first isolated for a period
of at least 10 seconds before switching on again.
If the pump fails to operate normally after three attempts to re-start, then
please contact the TechAssist team on [phone].
8.13 Fault Finding: The PCB is also fitted with a “power on” indicator light. This
will remain illuminated when mains power is supplied to the board.
The indicator light is located on the PCB within the terminal box.
zThis operation should only be carried out by a qualified
person
To view the light the following procedure must be followed:-
zIsolate the mains electrical power supply from the pump.
zRemove the four screws retaining the terminal box lid (Fig. 13).
zLift the terminal box lid off.
zIMPORTANT –Ensure there is no contact with any of the internal parts of
the terminal box.