Stuart Turner SHOWERMATE 46534 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:
Showermate U2.6 bar Single
Pt. No. 46534 Pt. No. 46534 EXP
Showermate U2.6 bar Twin
Pt. No. 46533 Pt. No. 46533 EXP
Showermate U1.8 bar Twin
Pt. No. 46532
FOR POSITIVE OR NEGATIVE HEAD APPLICATIONS
3
CE compliant product
SHOWERMATE

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PRODUCT DESCRIPTION
Electric motor driven single or twin ended peripheral pumps complete with an
automatic control system, consisting of flow switches, pressure switches, pressure
vessels and electronic control.
APPLICATION
Showermate Universal pumps are suitable for positive or negative head installation
conditions. These pumps are designed for single or multiple (up to 4) outlet pressure
boosting applications, within one bathroom, subject to correct specification and
pump sizing in vented stored water systems. Inlet pressures to the pump and ambient
temperatures must not exceed the values given in the technical specifications.
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 .......................................................5
Important Facts – read before commencing installation ......................6
Location ............................................................7
Pump Connections ...................................................11
Electrical Installation ..................................................15
Commissioning ......................................................18
Maintenance .........................................................19
Technical Specification ................................................21
Trouble Shooting .....................................................23
Guarantee ..........................................................27

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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.
zCleaning and user maintenance shall not be made by
children without supervision.
zWARNING – Washer/condenser dryers and condenser
dryers. The pump must not be used in the water
supply line to a washer/condenser drier or a
condenser drier, which uses a constant flow of cold
water to aid the condenser drying process, as
damage can occur to the pump. If in doubt or for
further information contact Stuart Turner Ltd.
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.

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zMaximum head (closed valve) U1.8 bar twin-18 metres,
U2.6 bar twin-26 metres, U2.6 bar single-26 metres.
zBefore starting work on the electrical supply ensure
power supply is isolated.
zBefore starting work on the electrical supply ensure
power supply is isolated.
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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Your product may vary slightly from the picture above.
The quantities shown above are for twin pumps, (single pumps are shown in brackets).
CHECKLIST
Item Description Qty Item Description Qty
Pump 1 ISO Hose & integral washer 2(1)
Plain Hose & integral washer 2(1) Tank & ‘O’-ring 1
AC
D
B
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.
PREINSTALLATION CHECK
The pressure vessel is supplied as a
separate item, and will need to be
fitted prior to installing the pump.
Install the pressure vessel ensuring
the ‘O’-ring is in place and hand
tighten.
Note: Do not overtighten pressure
vessel.
After fitting the pressure vessel
ensure the retaining nut at the base
of the assembly is still hand tight and
the cable connecting the pressure
switch has not been strained during
the assembly.
Do not lift/carry the pump by the
transfer pipe or pressure vessel
manifold.
Fig. 1
D
B
A
C
Note: This image is for reference only
Fig. 2
Pressure vessel
‘O’-ring
Retaining nut
Note: This image is 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 flexible hoses, pumps 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 the flexible hoses beyond 30o. They must be installed as
straight as possible.
1.23 DO NOT connect this pump to the mains water supply.
1.24 DO NOT stress the inlets/outlets of the pump from the misalignment of
hoses/pipework.
D Plumbing Installation Regulations
1.25 The plumbing installation must comply with the current water and building
regulations.
1.26 The plumbing installation must be installed by a qualified person.
E Pressure vessel
1.27 Pressure vessel is charged at the factory see Section 6 – Maintenance for
details.

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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 locate the unit, check to
ensure the static inlet head between pump and the bottom of the cold water
tank (Figs. 5 & 6), is at least 0.5 metres and does not exceed the max inlet
head of 6 metres.
2.17 Ambient temperature: The pump must be sited in a location where the
maximum ambient temperature does not exceed 40 oC.
2.18 Pipework: For optimum performance pipework MUST be 22 mm.
Pipework should only reduce to 15 mm when entering terminal fitting.
2.19 Static outlet pressure: The static outlet head must also be within the
maximum requirement (Figs. 5 & 6).
2.20 Noise: If supplied the anti-vibration mounting feet and flexible hoses can be
used to reduce noise transmission, however 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.
2.21 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).
2.22 Flexible hoses: Only use the Stuart Turner hose set supplied with the pump.
2.23 Isolating valves: Separate system isolating valves (non restrictive) must be
fitted to allow easy pump service.
2.24 Strainers: To ensure the pump does not become damaged as a result of
debris in the water supply, strainers must be fitted in line (not supplied).
2.25 Preferred pump location: The pump must, for optimum performance, be sited
as close as possible to and never more than 4 metres from the HOT WATER
cylinder. The pump should always be sited BELOW the HOT WATER take-off
from the cylinder. The pump location is also dependent on limitations of
the static inlet and outlet heads of the installation. For guidance on
limitations and recommended location, consult the following relevant section
for hot or cold water installation.

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2.26 Non-preferred pump location: If it is necessary to position the Pump above
the secondary tapping on the hot cylinder it is fed by, the risk of introducing
air will be increased.
To avoid this risk one of the two following solutions must be adopted:
The use of a Top Entry cylinder flange.
The use of a Stuart Side Entry (SE) cylinder flange, which should have the
addition of an inverted loop (“U” bend) of 350 mm minimum drop before
rising to the pump, located as close as possible to the cylinder wall. This will
ensure the pump receives an air free supply and the cylinder vents any air up
the vent pipe and not the pump feed (Figs. 3 & 4).
2 LOCATION  SINGLE PUMP
Max. static inlet pressure 6m Min. static inlet pressure 0.5 m
hot water
services
Negative head
200 mm min
350 mm
Max. static outlet pressure 6m
least preferred area
Fig. 4 – Twin Pump
Max. static inlet pressure 6m Min. static inlet pressure 0.5 m
Negative head
200 mm min
350 mm min Max. static outlet pressure 6m
least preferred area
Fig. 3 – Single Pump
Negative Duty Single Pump System
Fig. 5
Max. static inlet pressure 6m

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2 LOCATION  TWIN PUMP
Cold water connection:
2.27 The cold water supply: Must be a DEDICATED AIR FREE supply via a
tank connector, and must be positioned at a slightly lower level (25 mm
minimum) than the feed pipe to the hot water cylinder.
Do not connect to the mains.
Negative Duty Twin Pump System
Fig. 6
Max. static inlet pressure 6m

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Hot water connection:
2.28 Hot water cylinder or storage tank: 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 and a minimum of 22 mm.
2.29 Hot water supply: The pump must be supplied with a dedicated feed direct
from the hot water cylinder or storage tank, ensuring an air free connection to
the pump. We recommend the use of either the side entry Stuart flange (SE)
Part No 27900 or a top entry flange see Fig. 7.
2.30 Expansion pipe: When the method of connection is to be made via the
expansion pipe, the BASE of the cold water storage tank MUST be at least
1 metre above the connection/take off of the hot water storage cylinder
feeding the pump.
Fig. 7
Top entry flange
with 22 mm
pipework to
pump.
Off expansion
pipe with rising
22 mm offset
and 22 mm
pipework to
pump.
Off vertical
expansion pipe with
22 mm pipework to
pump.
Factory installed G ¾
secondary tapping
with 22 mm pipework
to pump.
or
Side mounted Stuart
flange side entry (SE)
(Part No. 27900) with
22 mm pipework to
pump
30o– 45o

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3 PUMP CONNECTIONS
zDo not use stainless steel, chrome or nickel plated pipe with the
flexible hose push-in plumbing connections.
zDo not introduce solder flux into the joint or surrounding area as
connectors will be attacked and may fail.
zAll solder joints should be completed and flux residues removed
before final connection to push-in connections, on the flexible
hose.
zDo not allow contact with oil or cellulose based paints, paint
thinners or strippers, acid based descalents or aggressive
cleaning agents.
zNever operate pump with inlet and/or outlet isolating valves in
the closed position. Damage will occur!
3.11 Pumps supplied with flexible inlet and outlet hoses: The pump inlet and
outlet ports are threaded G ¾ male. These ports are provided with a flat
sealing face suitable for use with an appropriately sized flat faced fitting and
fibre or rubber washer. Ensure a water tight seal is achieved when the pump
is both stationary and running.
a) Hoses incorporating integral isolating
valves should be applied to the inlet
side of pump to satisfy servicing
requirements.
b) Standard hoses with no integral
isolating valve should be applied to
the outlet side of pump.
c) Use correct sized flat headed
screwdriver for opening and
closing integrated isolating valve to
prevent damage.
Please note these valves are of quarter turn design, rotate clockwise to
close and anti-clockwise to open. Failure to comply to these instructions
could lead to valve damage.
d) WARNING – pump must not run with valve closed.
e) Flexible hoses with integral isolating valves do not replace system isolation
valves which must be installed.
Open
Close
Fig. 8

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3.12 Hose to pump: The pump inlet and outlet ports have fittings which are
specifically designed for connection to the G ¾ female running nuts on the
flexible hoses. The hose end running nut is fitted with a rubber sealing
washer which is held captive within the nut assembly. Locate the hose into
position and screw the nut fully onto the fitting by hand. Finally nip tight with
pliers (4 to 5 Nm) for a water tight seal (do not overtighten).
3.13 Hose to pipework:
1. The hoses are fitted with plastic push-in connectors, which must only be
connected with the following:
a) 15 mm diameter copper pipe to BS EN 1057 – R250 (half hard) – Table 3.
b) 15 mm plastic pipe to BS 7291 part 1 and part 2 (Table 1), or part 3
(Table 1) plus internal support sleeve*.
* The internal bore of the plastic pipe must be supported against
collapse with the pipe manufacturers recommended support sleeve
(pipe insert).
c) Appropriate plumbing fitting that provides a leak tight connection.
Ensure the pipe is free from all score marks and deformities in the area of
the insertion depth (Fig. 10) and cut the pipe square, removing all burrs
and sharp edges to prevent damage to the sealing ‘O’-ring.
Fig. 9
Flexible hose
Rubber sealing
washer (captive in nut
assembly)
Port fitting
Port adaptor (factory fitted)
G ¾ running nut
assembly

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2. Prior to inserting pipe into fitting, mark the insert depth on the wall of the
pipe with a soft pencil at a distance of 31 mm from the end to be inserted
(Fig. 10).
3. Check in the mouth of the fitting that the ‘O’-ring, nylon washer and collet
are in position as shown in Fig. 11.
4. Push the pipe firmly into the fitting, until pencil mark is level with the top
of the collet and the pipe stop resistance is felt. Pull on the pipe to check
it is secure and correctly fitted.
5. To release the joint, push pipe firmly into the fitting, hold the collet down
and gently remove pipe. If the system has been filled with water care
should be taken to isolate the pump and towels used to absorb spilled
water.
Fig. 11
Collet
Washer
‘O’-Ring
Flexible Hose
Pipe Stop
Fig. 10
15 mm Pipe
Pencil
Mark
Insert Depth 31 mm

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If you have any concern either about using push-in fittings or should the joint leak
on final test, isolate the water supplies and contact TechAssist on
[phone].
3.14 Typical Low Level Installation:
In certain installations it may be necessary to install a 90° bend on the inlet or
outlet connections of the pump before the flexible hose to accommodate a
low level installation.
Below are some preferred connection options. All connections seal on the
pump body using a fibre or rubber sealing washer. Tap connector fittings
should be used which must be of an appropriate pressure and temperature
rating.
It is essential when using any of the fittings shown below, that a correct water
tight seal is obtained between the pump body and selected fitting and
also the flexible hose and selected fitting. If in doubt contact the fitting
manufacturer and confirm compatibility with the connection to be sealed.
Carefully check connections and pipework for leaks whilst pump running and
stationary before leaving the installation unattended.
Fig. 12
G ¾ female x 15 mm
elbow tap connector.
Fibre washer.
15 mm
elbow.
15 mm
copper
pipe
Fibre washer.
G ¾ female x 15 mm
tap connector.
15 mm compression to
G ¾ male.
15 mm copper pipe.
G ¾ female flexible hose
(supplied in kit).
15 mm compression to
G ¾ male. G ¾ female flexible hose
(supplied in kit).
15 mm to G ¾
male.
G ¾ female
flexible hose
(supplied in
kit).
15 mm stem elbow.
G ¾ female x 15 mm tap
connector with flush central
spigot and rubber sealing washer
fitted directly to the pump
terminals.
Sealing washer (sometimes
captured in fitting)
G ¾ female x 15 mm
swivel tap connector
with flush central
spigot and rubber
sealing washer fitted
directly to the pump
terminals.

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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 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.
4.15 Adjacent pipes: Adjacent suction and delivery pipes should be fitted with
earthing clamps in accordance with current regulations (Fig. 13).
4.16 Earthing: This appliance must be earthed via the supply cord, which must be
correctly connected to the earth point located in the terminal box.
4.17 Pipework: Copper or metallic pipework must have supplementary earth
bonding where the continuity has been broken by flexible hoses or plastic
components.
4.18 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.
4.19 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.
Diagram of
earth
continuity
connections
Fig. 13

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4.20 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:
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.
4.21 Wiring Diagrams:
Model Fuse Size (AMPS)
All Models 5
4.22 Fuses: The following fuse size should be used with the appropriate pump.
MAIN WINDING
THERMOTRIP CAPACITOR
START WINDING
FLOWSWITCH
REED (S3)
LINK WIRE (BLUE)
BROWN
BLACK
GREEN / YELLOW
BLUE
BROWN L
E
N230 VAC/1PH/50Hz
SUPPLY
BLUE
PRESSURE
SWITCH (S1)
NMNL
S3 S3S1 S1
MAIN WINDING
THERMOTRIP CAPACITOR
START WINDING
FLOWSWITCH
REED (S3)
LINK WIRE (BLUE)
BROWN
BLACK
GREEN / YELLOW
BLUE
BROWN L
E
N
BLUE
FLOWSWITCH
REED (S2)
PRESSURE
SWITCH (S1)
230 VAC/1PH/50Hz
SUPPLY
NMNL
S2 S3 S3 S2 S1 S1
Single Pumps
Fig. 14
Twin Pumps
Fig. 15

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4.23 Supply Cord Replacement:
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 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.
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. Re-assemble to
the same pattern.
For information on cable connection consult the wiring diagram and cable
gland fitting instructions.
4.24 Cable Gland Fitting Instructions:
To enable correct assembly of the cable gland the ‘O’-ring (Fig. 16 item 1)
must be placed over the cable before the clamping insert (Fig. 16 item 2) can
be tightened.
Note: Cable diameter range:- 6.5 mm to 9.5 mm.
4.25 Supply Cord Extension:
The pumps are fitted with a supply cord to the following specification:-
All models.................HO5VV-F3 G 0.75 mm – 6 Amp rated cable.
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.
Fig. 16
1
2

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5 COMMISSIONING
5.11 System Flushing: This pump incorporates push-in connectors and
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 Water Supply: Always ensure that water storage capacity is adequate to meet
the demand. Ensure the pump chamber is full of water before starting the
pump. Failure to do this could result in seal damage. To ensure dry running
does not occur the pump must be primed as described in priming section
below. Do not run pump dry.
5.13 Priming:
Never operate pump with inlet and/or outlet isolating valves in the
closed position. Damage will occur!
The pump must be primed (filled with water) before starting.
Turn on the service valves with the power turned off to the pump. Open the
nearest outlet to be pumped for 10–15 seconds then close.
Proceed to starting sequence.
5.14 Starting:
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, (including
w/c systems) allowing water 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.
5.15 For Further Technical Support: Phone the Stuart Turner TechAssist team
on [phone]. Our staff are trained to help and advise you over
the phone.

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6 MAINTENANCE
6.11 Turn off water supplies to the pump and release pressure by
opening water outlets before attempting maintenance.
6.12 Pressure vessel: Should ever the need arise for the vessel to have its air
charge checked or replenished, it should be carried out as follows: –
a) Isolate pump electrically.
b) Isolate hot and cold water supplies via the integral pump isolating valve
located in the flexible hoses (see Section 3 – Pump Connections).
c) Release system water pressure by opening a system outlet (tap).
d) Check air charge at Schrader valve (Fig. 17) using a tyre pressure gauge.
Model Vessel Pressure
kPa bar psi
All Models 150 1.5 21.75
e) Replenish air charge if required by injecting air into the vessel via the
Schrader valve using a car or bicycle pump, ensuring a system outlet
valve (tap) remains open during this procedure to allow the vessel to
exhaust any excess water.
f) Close all system taps, open hot and cold inlet pump isolating valves, turn
on electrical power.
g) After maintenance is completed refer to Section 5 – Commissioning for
instructions on re-starting pump.
Fig. 17
Pressure vessel Schrader valve
Single pump shown
Note: This image is for
reference only

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Cont ...
6.13 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. The pump must be run for at least 5 minutes every four weeks
to “exercise” all working parts. Run on cool water. See Section 7 – Technical
Specification for note on water temperature. This particularly applies to
guest bathrooms used infrequently.
6.14 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].
6.15 No other routine maintenance is required.