Mira 88 B
SHOWER CONTROL
Installation
Operation &B
Maintenance Guide
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER
Contents
Section
Page
1 ..... Important Safety Information ........................................... 4
2 ..... Introduction ........................................................................5
3 ..... Pack Contents Checklist:
Mira 88 Surface Mounted shower control ......................6
Mira 88 B Built-in shower control ..................................7
Documentation.............................................................7
4 ..... Specifications:
Pressure range ........................................................... 8
Connections ................................................................ 8
Stored Water Temperature ......................................... 8
5 ..... Installation Requirements:
General ........................................................................9
Typical suitable installations ...................................... 10
6 ..... Installation:
Mira 88 - Surface Mounted Shower Control
Rising and falling inlet supplies .................................. 12
Back inlet supplies .................................................... 16
Mira 88 B - Built-in Shower Control
Solid or dry-lined wall structures ................................ 19
Stud partition or dry partition wall structures ............... 22
Shower cubicle or laminated panel ............................ 24
7 ..... Operation: ........................................................................ 26
8 ..... Maintenance:
Fault Diagnosis ......................................................... 27
General ..................................................................... 28
Dismantling ............................................................... 28
Cleaning ................................................................... 30
Re-assembly ............................................................. 31
Appendices:
1 ..... Dimensions ................................................................. 34
2 ..... Accessories ................................................................. 35
2
Section
Page
Appendices:
3 ..... Spare parts:
Mira 88 Spare parts list ............................................. 36
Mira 88 Spare parts diagram .................................... 37
Mira 88 B Spare parts list ......................................... 38
Mira 88 B Spare parts diagram ................................. 39
Guarantee, Customer Care Policy, and How to contact us ......... Back cover
3
Section
1
Important Safety Information
1. WARNING!
1.1. Products manufactured by us are safe and without risk provided they are
installed, used and maintained in good working order in accordance with our
instructions and recommendations.
2. Caution!
2.1. Read all of these instructions.
2.2. Retain this guide for later use.
2.3. Pass on this guide in the event of change of ownership of the installation site.
2.4. Follow all warnings, cautions and instructions contained in this guide.
2.5. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws (Scotland), Building Regulations or any particular
regulations and practices, specified by the local water company or water
undertakers. The installation should be carried out by a plumber or contractor
who is registered, or is a member of, an association such as:
2.5.1. Institute of Plumbing (IOP), throughout the UK.
2.5.2. National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales.
2.5.3. Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),
Scotland and Northern Ireland.
2.6. Anyone who may have difficulty understanding or operating the controls of any
shower should be attended whilst showering. Particular consideration should be
given to the young, the elderly, the infirm, or anyone inexperienced in the correct
operation of the controls.
2.7. The temperature control can be turned from FULL HOT to FULL COLD. As
such, turning the control to full hot will deliver water at the hot water storage
temperature.
4
Section
2
Introduction
Thank you for purchasing a quality Mira product. To enjoy the full potential of your new
product, please take time to read this guide thoroughly, having done so, keep it handy
for future reference.
A range of Mira 1/2" manual shower controls which provide independent selection of
spray force and temperature. The Mira 88 is available with a choice of surface mounted
and built-in models.
The Mira 88 is not a thermostatic shower control and does not sense supply
temperature or pressure variations. Therefore, inlet water temperatures and pressures
especially the hot, should be relatively constant.
The Mira 88 is suitable for installation with the following packages:Gravity fed systems
Pumped systems
Shower controls covered by this guide:
Mira 88
Surface mounted shower control for connection to exposed pipework. White/chrome
or white/light golden colour models are available.
Mira 88 B
Built-in shower control for connection to concealed pipework. White, white/chrome
or white/light golden colour models are available.
If you experience any difficulty with the installation or operation of your new
shower control, then please refer to Section 8 Maintenance: “1. Fault
diagnosis", before contacting Kohler Mira Limited. Our telephone and fax
numbers can be found on the back cover of this guide.
5
Section
Pack Contents Checklist
3
9 Tick the appropriate boxes to familiarize yourself with the part names and to confirm
…
that the parts are included.
1. Mira 88 Surface Mounted shower control
2 x Pipe Concealing Plates
…
2 x Compression Nuts
…
2 x Gaskets
2 x Olives
…
2 x 1/2" BSP Inlet
Connector Nipples
…
1 x 88 Shower Control
2 x Fixing Screws
…
6
1 x 'O' Seal
…
1 x Outlet Nipple
2 x Concealing Caps
2 x Wall Plugs
…
…
1 x 2.5 mm A/F
Hexagonal Wrench
…
…
…
…
2. Mira 88 B Built-in shower control
2 x Fixing Screws
2 x Wall Plugs
1 x 88 B Shower Control
With Building-in Shroud
…
…
1 x 2.5 mm A/F
Hexagonal Wrench
…
1 x Foam Seal
…
3 x Clips
…
1 x Concealing Plate
1 x Concealing
Bracket Assembly
…
…
…
3. Documentation
1 x Installation, Operation and Maintenance Guide
1 x Customer Support Brochure
…
…
7
Section
Specifications
4
1. Pressure range
Mira 88 (valve only)
1.1. Minimum pressure 0.06 bar.
1.2. Maximum maintained pressure 1.5 bar.
1.3. Maximum static pressure 5 bar.
Mira 88 B (valve only)
1.4. Minimum pressure 0.06 bar.
1.5. Maximum maintained pressure 1.5 bar.
1.6. Maximum static pressure 5 bar.
2. Connections
Mira 88
2.1.
Inlet
2.2. Outlet
15 mm compression or 1/2" BSP male.
1/2" BSP male/female.
Mira 88 B
2.3.
Inlet
2.4. Outlet
1/2" BSP female.
1/2" BSP female.
3. Stored Water Temperature
3.1. It is recommended that the temperature of stored water should never exceed
65°C. A stored water temperature of 60°C is considered sufficient to meet all
normal requirements and will minimise the deposition of scale in hard water
areas.
8
Section
5
Installation Requirements
1. General
Read the section “Important Safety Information” first.
1.1. Products manufactured by us are safe and without risk provided they are
installed, used and maintained in good working order in accordance with our
instructions and recommendations.
1.2. Layout and sizing of pipework must be such that when other services are used,
pressures at the shower control inlets are maintained approximately equal and
do not fall below the recommended minimum.
1.3. Do not install the product in a position where it could become frozen.
1.4. Do not use excessive force when making connections.
1.5. Do not install the product in a position in which service access is restricted.
1.6. A hose retaining ring is supplied to prevent the handset from dropping below the
spillover level of the bath or shower which could lead to contamination.
1.7. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws (Scotland), Building Regulations or any particular
regulations and practices, specified by the local water company or water
undertakers. The installation should be carried out by a plumber or contractor
who is registered, or is a member of, an association such as:
1.7.1. Institute of Plumbing (I.O.P.) throughout the U.K.
1.7.2. National Association of Plumbing, Heating and Mechanical Services
Contractors (N.A.P.H. & M.S.C.) England and Wales.
1.7.3. Scottish and Northern Ireland Plumbing Employer's Federation
(S.N.I.P.E.F.) Scotland and Northern Ireland.
9
2. Typical suitable installations
Key to symbols
Float operated valve
Stop or servicing valve
Shower control
Warning or overflow pipe
Twin impeller inlet pump
Single impeller outlet pump
2.1. Gravity fed showers - The shower control MUST be fed from a cold water
storage cistern and hot water cylinder providing nominally equal pressures.
10
2.2. Pumped showers (inlet pumps) - The shower control can be installed with an
inlet pump (twin impeller). The pump MUST be located on the floor next to the
hot water cylinder. The hot water cylinder/vent pipes must be arranged as shown
to achieve air separation.
90 °
30 ° to 60 °
Pumped Showers (inlet pumps)
2.3. Pumped showers (outlet pumps) - The shower control can be installed with
an outlet pump (single impeller). The pump MUST be located on the floor near
to the shower control. The hot water cylinder/vent pipe must be arranged as
shown to achieve air separation.
90 °
30 ° to 60 °
Pumped Showers (outlet pumps)
11
Section
6
Installation
Mira 88 - Surface Mounted Shower Control
1. Rising and falling inlet supplies
1.1. Determine whether the hot or cold
water services will be connected
to the shower control from the
bottom (rising) or from top (falling).
1.2. The Mira 88 is supplied with inlet
connections hot left, cold right
and bottom outlet as standard.
1.3. Before deciding the final
positioning of the shower control,
please bear in mind the following:Consideration should be given
with regard to positioning of the
shower control and shower fitting.
(Not applicable to rigid shower
fittings).
Backplate
Backplate Trim
Determine the position of the outlet
in relation to the type of shower
fitting used.
e.g. Mira er-s:
Select top outlet
Mira ev-s:
Select bottom outlet.
1.4. Install the hot and cold supply pipes
at 153 mm centres.
Grub Screw
12
1.5. Loosen the backplate grub screws
and using the 2.5 mm A/F
hexagonal wrench provided,
remove the backplate and
backplate trim from the shower
control body.
1.6. Mark through the backplate the
position of the two holes ensuring
that they are horizontally aligned.
1.7. Drill and suitably plug the two
fixing holes. Secure the backplate
to the wall with the screws and
wall plugs provided, if suitable.
Backplate
Backplate Trim
1.8. Place the backplate trim over the
backplate. Locate the shower
control body onto the backplate
and secure by tightening the
recessed grub screw using the
2.5 mm A/F hexagonal wrench
(supplied).
Wall Plugs
Screws
Grub Screw
Shower Control
Body
13
1.9. Adjust the inlet elbow to accept
falling or rising supplies as
follows:
'O' Seal
Using the 2.5 mm A/F hexagonal
wrench loosen the grub screws
and remove the inlet elbows.
Ensure that the 'O' seal is on
inlet connector, not in 'V' groove.
Inlet Elbow
Grub Screw
Concealing
Cap
Turn the inlet elbows to the
required position and refit onto
the inlet connectors.
Tighten the grub screws to fix
the inlet elbows and fit the
concealing caps.
Inlet Nipple
Gasket
1.10. Fit the gaskets to the short inlet
nipples and screw the nipples
with tapered ends outermost to
accept the compression fittings.
1.11. Tighten the nipples fully with a
12 mm A/F hexagonal wrench
(not supplied).
14
1.12. Thoroughly flush the incoming
hot and cold water supply pipes
before connecting the shower
control.
Compression Nut
Olive
1.13. Slip the compression nuts and olives
over the supply pipes and then make
the connection to the inlet pipework.
Make sure that you protect the
plated surfaces.
Nipple
Gasket
1.14. Fit the 'O' seal to the tapered end of
the outlet nipple and screw into the
shower control outlet using a 12
mm A/F wrench (not supplied). This
will leave a flat face for connection
to the shower hose.
'O' Seal
1.15. Turn on the water supplies and
check for any leaks.
Outlet Nipple
1.16. Turn the flow knob fully
anticlockwise for water flow.
Operate temperature knob and
ensure directional hot and cold
indicators are correct.
HOT = anticlockwise
COLD = clockwise
Turn flow knob fully clockwise to
stop water flow.
Note! An alternative temperature
knob is available from Mira
Customer Support for reversed Hot
and Cold inlet supplies.
The temperature knob incorporates
two large keyways to assist location
of the knob on to the temperature
spindle.
Flow Knob
Temperature Knob
1.17. This completes the installation of
the Mira 88 for connection to "rising
inlet and falling inlet supplies".
15
2. Back inlet supplies
2.1. Use a spirit level and a pencil to
mark the route for the hot and
cold water supply pipes at 153
mm centres.
2.2. Remove the plaster and brick/
block to the required depth to
conceal the pipework.
2.3. Follow the shower control
installation procedure as for
"Rising inlet and falling inlet
supplies": instructions 1.1 to
1.4.
13 mm From
Finished Wall
Surface
Backplate
2.4. Install the supply pipes. The pipes
must project from the finished
wall by 13 mm. Finish the surface
of the wall as required. The
recesses in the wall for the
concealing plates must be 32
mm diameter x 10 mm deep.
Wall Plugs
Screws
153 mm Centres
16
2.3. Follow the shower control
installation procedure as for
"Rising inlet and falling inlet
supplies": instructions 1.5 to
1.7.
2.4. Fit the gaskets to the short inlet
nipples and screw the nipples with
the tapered ends outermost to
accept the compression fittings.
Concealing Plate
Backplate
Supply Pipe
Compression Nut
Olive
Tighten the nipples fully with a 12
mm A/F hexagonal wrench (not
supplied).
2.5. Fit the concealing plates over the
pipework into the enlarged recesses
in the finished wall surface.
Nipple
Gasket
Backplate
Trim
Grub Screw
2.6. Thoroughly flush the incoming
hot and cold water supply pipes
before connecting the shower
control.
2.7. Slip the compression nuts and olives
over the supply pipes.
Place the backplate trim over the
backplate. Locate the shower
control body onto the backplate and
secure by tightening the grub screw
using the 2.5 mm A/F hexagonal
wrench (supplied).
Make the connections to the inlet
pipework. Make sure that you
protect the chrome plated surfaces
whilst you tighten the compression
nuts
Flow Knob
Temperature Knob
17
2.8. Fit the 'O' seal to the tapered end of
the outlet nipple and screw into the
shower control outlet using a 12
mm A/F hexagonal wrench (not
supplied). This will leave a flat face
for connection to the shower hose.
2.9. Turn on the water supplies and
check for any leaks.
'O' Seal
Outlet Nipple
2.10. Turn the flow knob fully
anticlockwise for water flow.
Operate temperature knob and
ensure directional hot and cold
indicators are correct.
HOT = anticlockwise
COLD = clockwise
Turn flow knob fully clockwise to
stop water flow.
Note! An alternative temperature
knob is available from Mira
Customer Support for reversed Hot
and Cold inlet supplies.
2.11. This completes the installation of
the Mira 88 for connection to "Back
inlet supplies".
18
Mira 88 B - Built-in Shower Control
The built-in shower control is designed to be concealed into a solid or dry-lined wall
structure. A support bracket assembly (optional accessory) is available which can
be used to fix the shower control into a shower cubicle, laminated panel, stud
partition or dry partition wall.
The building-in depth (to the finished wall surface) is between 50 and 68 mm The
building-in depth dictates how much of the flow and temperature control knob will be
visible through the concealing plate when the installation is completed.
A building-in shroud is supplied which protects the shower control during plastering
and tiling and provides a reference for the building-in depth when chasing out the
wall.
The shower control is not supplied with any interconnecting pipework or plumbing
fittings. Inlet and outlet threads are 1/2" BSP female parallel.
3. Solid or dry-lined wall structures
3.1. Make a recess in the wall large
enough for the shower control,
pipework and plumbing connections.
Ensure that the building-in depth is
correct.
3.2. Remove the plastic building-in
shroud. The two building-in shroud
retaining screws should be screwed
temporarily into the base for use
later.
Backplate
3.3. Drill and plug the fixing holes. Using
screws provided, if appropriate, fix
shower control and backplate
assembly into recess (Ensure that
shower control inlets are horizontal
with shower control outlet at the
top).
Building-in Shroud
3.4. Install the hot and cold supplies to
the shower.
Retaining Screws
19
3.5. Thoroughly flush the incoming
hot and cold water supply pipes
before connecting the shower
control.
Fixing
Screws
3.6. Make the connections to the
incoming hot and cold water supply
pipes and outlet supply pipe (install
appropriate outlet shower fitting).
3.7. Turn on the water supplies and check
for any leaks.
Wall
Plugs
3.8. Refit the plastic building-in shroud
over the shower control body and
secure with the two shroud retaining
screws removed in instruction 3.2.
Pipework Set Deeper
Plaster and tile up to the sides of the
plastic building-in shroud and when
set remove the shroud, but retain
the screws for use later.
To ensure that the supply pipework
is able to maintain free movement in
a solid wall and is protected, it is
suggested that each pipe is
concealed into suitably sized
conduit.
3.9. Pull off the temperature knob and
gently prise off circlip using a
screwdriver and pull off the flow
control knob.
Building-in
Shroud
Caution! The foam seal MUST be
fitted to prevent water entering the
wall recess.
3.10. Place the foam seal over the cover
of the shower control, behind the
white ring aligning the holes in the
foam seal with the holes in the
backplate assembly.
Fit the concealing bracket assembly
over the foam seal and secure with
the two shroud retaining screws.
Retaining Screws
20
3.11. Fit flow knob and circlip.
Foam Seal
Ensure that the flow knob is free to
rotate after the foam seal has been
fitted.
Note! If the shower control is
recessed too deep the two shroud
retaining screws will not reach the
backplate assembly.
Flow Knob
Circlip
Clip x 3
3.12. Install the shower fitting (refer to
separate installation guide).
Concealing Bracket
3.13. Turn the flow knob fully anticlockwise
for water flow. Fit the temperature
knob.
Concealing Plate
Note! The temperature knob
incorporates two large keyways to
assist location of the knob on to the
temperature spindle.
Operate temperature knob and
ensure directional hot and cold
indicators are correct.
HOT = anticlockwise
COLD = clockwise
Turn flow knob fully clockwise to
stop water flow.
Note! An alternative temperature
knob is available from Mira
Customer Support for reversed Hot
and Cold inlet supplies.
3.14. Push the concealing plate firmly
over the concealing bracket
assembly until it locates on the
three clips.
Flow Knob
Temperature Knob
3.15. This completes the installation of
the Mira 88 B into "Solid or drylined wall structures".
21
4. Stud partition or dry partition wall structures
The support bracket (optional accessory) has been designed to allow the shower control
to be installed into the front face of a stud partition wall and is recommended to this type
of installation. However, installers may wish to consider other options such as fabricated
rear supports using wooden noggins, however, these methods of fixing are beyond the
scope of this guide.
The building-in depth (to the finished wall surface) is between 50 and 68 mm The
building-in depth dictates how much of the flow and temperature control knob will be
visible through the concealing plate when the installation is completed. The bracket
must be fixed into a recess at an angle of 45o from horizontal.
4.1. Cut a 135 mm diameter hole in
the panel and mark the fixing
holes for the support bracket (if
used) at 45o.
135mm Diameter
45o
Ensure that the building-in
depth is correct.
Backplate
Building-in Shroud
4.2. Remove the plastic building-in
shroud. The two building-in
shroud retaining screws should
be screwed temporarily into
the backplate for use later.
Retaining Screws
22
4 mm
4.3. Fix the shower control to the
support bracket with the
screws, nuts and washers
supplied.
Fix the support bracket and
shower control in position using
suitable fixings (not supplied).
Note! The support bracket
requires a clearance depth of
60 mm, with a finished wall
thickness of 4 mm. The raised
portion on the building-in shroud
can be used as a depth gauge.
Wall thicknesses in excess of
4 mm can be accommodated,
but clearance will be required
around the inlet and outlet
connections to allow insertion
of pipe and tightening of
compression nuts.
60 mm
Nuts
Support Bracket
4.4. Drill and suitably plug the four
marked fixing holes.
Washers
4.5. Secure the support bracket to
the wall with the screws and
plugs provided.
Retaining Screws
Shower Control
4.6. Follow the shower control
installation procedure as for
"Solid or dry-lined wall
structures": instructions 3.4
to 3.14 inclusive to complete
the installation.
23
5. Shower cubicle or laminated panel
The support bracket (optional extra) is recommended to be used to fit the
shower control into a shower cubicle or laminated panel 2 - 20 mm thick.
The dimension from bracket to finished wall surface is 50 - 68 mm
2 to 20 mm
Finished
Wall Surface
5.1. Cut a 108 mm diameter hole in
panel and drill two 4.5 mm holes
at 138 mm centres at an angle of
45o from horizontal.
50 to 68 mm
Panel
Fixing
Screw
4.5 mm Dia
Cubicle or
Laminated
Panel
108 mm
45o
5.2. Remove the plastic building-in
shroud. The two building-in
shroud retaining screws should
be screwed temporarily into the
backplate for use later.
Backplate
Building-in Shroud
Retaining Screws
24
Nuts
Support Bracket
5.3. Fix shower control and backplate
to support bracket with screws,
nuts and washers supplied.
Washers
Shower Control
Retaining Screws
Support Bracket
5.4. Secure the bracket to the wall
with the screws provided.
5.5. Follow the shower control
installation procedure as for
"Solid or dry-lined wall
structures" instructions 3.4 to
3.7 and 3.9 to 3.14.
Shower Control
Screw
25
Section
7
Operation
1. WARNING!
1.1. The temperature control can be turned from FULL HOT to FULL COLD. As
such, turning the control to full hot will deliver water at the hot water storage
temperature.
Flow
1.1. Turn the outer flow control knob
until the desired force of water is
obtained.
=
=
1.2. Turn the inner temperature control
knob in the direction of the red arrow
for warmer water and in the direction
of the blue arrow for cooler water,
until the desired temperature of
water is obtained.
26
Temperature
=
Section
Maintenance
8
1. Fault diagnosis
Read the section “Important Safety Information” first.
Mira products are fully performance tested after assembly. In the unlikely event that you
experience problems with your shower the following procedure will enable you to
undertake basic fault finding before contacting the Kohler Mira Service Office for further
assistance or spare parts as necessary.
If after completing the checks no improvement in performance is experienced, then
further investigation should be undertaken by the person responsible for installing your
shower. Only competent persons should remove the cover of the shower control.
Malfunction
Cause
Blend temperature
insufficiently high.
a) Hot water used up.
b) Hot water too cool,
setting of hot water
system (typically 60o 65oC).
c) Cold supply pressure too
high relative to hot.
No flow or low flow rate
from shower head.
a) Spray plate blocked.
b) Stop or servicing valve in
supply pipe partially
closed.
c) Head of water below
minimum required.
d) Wrong handset or spray
plates for available
pressure.
*
Remedy
Wait to reheat.
Check temperature.
Refer to the section
"Installation Notes" for
plumbing advice.
Clean spray plate.
Open valve/s.
Raise cistern or fit Mira
pump.
Fit correct handset or
change spray plates.
Drip from shower head . a) Defective flow control
seals, possibly caused
by failure to flush
pipework prior to
Obtain Seal Pack. Refer
to the section "Parts
list".
Drip from behind control a) Defective spindle seals.
knobs.
Obtain Seal Pack.
(Continued)
A small amount of water may be retained in the shower head after the shower
*control
has been turned off. This may drain off over a period of minutes and
should not be confused with a "Defective flow control".
27
Malfunction
Shower flow control
Cause
a) Impaired free movement
of shower internals.
b) Shower fitted to high
pressure system eg.
combination boiler.
c) ('B' models only) Flow
control knob binding
Remedy
Descale and service
Shower not designed
for mains pressure
systems. Fit
Ensure seal fitted
correctly and hole size
2. General
The Mira 88 shower control is precision engineered to provide satisfactory performance
provided it is installed and operated in accordance with our recommendations contained
in this guide.
Shower controls are mechanical devices and should be serviced annually depending on
the water conditions. Areas of the country that are affected by hard water should
consider shorter service intervals.
The dismantling procedure that follows will assist you with maintenance. A service pack
is available which contains all seals and silicone grease necessary to service the
shower control. The service pack is available from the Kohler Mira Customer Support
Department, when ordering please quote the model of the shower control, part number
and description of the items required (refer to Appendix 3, Spare Parts).
When installed in very hard water areas (above 200 p.p.m. temporary hardness) your
installer may advise the installation of a water treatment device to reduce the effects of
limescale formation.
You may, if you wish, choose to engage the services of a Mira Service Engineer or
Agent, the terms of which are outlined on the back page of this guide.
3. Dismantling
3.1. Isolate the hot and cold water
supplies to the shower control.
Recessed Shower Control
3.2. Open the flow control to release
the pressure in the system.
Note! Recessed models only;
remove the concealing plate.
3.3. Remove the temperature control
knob using a screwdriver.
A slot is provided on the side of
the temperature knob to assist in
removal.
28
Surface Mounted Shower Control
3.4. Gently prise off circlip using a
screwdriver.
3.5. Pull off the flow knob.
3.6. Unscrew the cover anticlockwise.
Recessed models; When the
cover is removed some water
will run from the body. Channel
this water away or soak it up with
absorbent material.
Flow Knob
Circlip
Temperature Knob
Metal Thrust
Washer
Cover
3.7. Remove the cover, identify and
retain the metal thrust washer,
which will be located on either
the flow spindle or inside the
cover.
3.8. Pull the internal set out of the
shower control body (including
the spindle seating washer).
Spindle Seating
Washer
Internal Set
29
4. Cleaning
4.1. Dismantle the internal set into its
component parts and fit
replacements if required.
Metal Thrust
Washer
4.2. Clean all metal components in
descaling solution, following the
manufacturer's instructions.
Flow Spindle
Horseshoe
Washer
Clean all plated or plastic fittings
with a mild detergent and wipe dry
with a soft cloth.
Yoke
Plastic
Washer
Metal
Washer
Piston
Spindle
'O' Seal
CAUTION! DO NOT allow the
descaling solution to come into
contact with bathroom fittings and
surfaces.
Spring
Metal
Washer
Plastic
Washer
Temperature
Spindle
Locating
Quadrant
Spindle
Seating
Washer
30
Do not use abrasives or acid
solutions.
CAUTION! Thoroughly flush the
shower control before use to remove
any residual descalent solution
which may be injurious to health.
4.3. Renew all seals.
4.4. To assist re-assembly, lightly smear
the 'O' seals, temperature and flow
spindle with a silicone based
lubricant.
Note! Do not use petroleum based
lubricants as it will damage the 'O'
seals.
5. Re-assembly
5.1. Fit the spindle seating washer into
the shower control body.
5.2. Place the locating quadrant over
the temperature spindle.
Note! Ensure that the pin of the
temperature spindle is aligned within
the cut out of the locating quadrant.
5.3. Reassemble the spring, metal and
plastic washers on to the
temperature spindle as illustrated.
Spindle
Seating
Washer
Plastic
Washer
Metal
Washer
Spring
Metal
Washer
Plastic
Washer
Locating
Quadrant
Temperature
Spindle
Pin
Piston
5.4. Fit the piston spindles into the
pistons.
Piston Skirt
Spindle
Note! Ensure that the piston is
fitted over the spindle widest end
first.
'O' Seal
31
5.5. Screw the greased flow spindle
anticlockwise into the yoke.
Yoke
Flow Spindle
5.6. Place the horseshoe washers into
the yoke with the convex face
upwards (as shown).
'O' Seal
Horseshoe
Washer
Flow Spindle
and Yoke
5.7. Push the piston and spindle
assemblies into the yoke. Ensure
that cutouts in the side of the pistons
are both towards the flow spindle
(i.e. towards the centre of the yoke).
5.8. Push the temperature spindle
assembly through the flow spindle
and yoke.
Piston
Assembly
Temperature
Spindle Assembly
5.9. Unscrew the flow spindle slightly to
allow the temperature spindle to fit
between the two plastic pistons.
5.10. Squeeze the two pistons towards
the centre of the yoke, until both
pistons are touching the sides of
the temperature spindle.
32
5.11. Squeeze the pistons together and
gently push the internal set into the
shower control body. Ensure that
locating quadrant tab is correctly
aligned with the body cutout.
Locating
Quadrant
Tab
Note! Care should be taken to avoid
damage to the front skirt of the
pistons when they are pushed into
the shower control body.
5.12. Fit the metal thrust washer over the
flow spindle.
5.13. Screw the cover onto the shower
control body until it is finger tight,
then turn the flow spindle fully
anticlockwise (If necessary use the
flow knob for added leverage).
Body
Cutout
Metal Thrust
Washer
Cover
Then tighten the cover onto the
shower control body.
Check that the flow and temperature
spindles move freely.
Note! If it cannot be moved too
many thrust washers have been
used or the cover has been
tightened with the flow spindle
turned to the off position.
Flow Knob
5.14. Fit the flow knob and secure with a
circlip.
5.15. Refit the temperature knob.
Restore the hot and cold water
supplies to the shower control and
check for leaks.
Circlip
Temperature Knob
33
Appendix
Dimensions
1
186 mm
33 mm
80 mm
153 mm
77 mm
Dia.
33 mm
33 mm
150 mm Diameter
34
50-68 mm
80 mm
Appendix
2
Accessories
Support Bracket: Allows the shower control to be fitted into a shower cubicle, stud
partition or dry partition wall. Available as optional accessory from your Mira stockist.
DCV-H: An outlet double check valve, requiring a minimum inlet supply pressure of 0.5
bar, which has been designed to prevent the backflow or backsiphonage of potentially
contaminated water, through shower controls which are fitted with a flexible hose as
part of the outlet shower fitting. Available as an optional accessory from your Mira
stockist.
35
Appendix
Spare Parts
3
1. Mira 88 spare parts list
004.50
025.14
052.11
055.14
079.42
079.45
090.95
106.75
280.07
280.15
553.35
553.54
555.35
573.35
575.12
618.22
618.23
623.70
630.41
630.61
631.30
802.46
802.47
805.31
904.07
911.06
920.30
933.25
936.12
937.84
937.07
36
Body
Piston Assembly
Backplate Assembly (Built-in models)
Backplate Assembly
Body Shroud - light golden
Body Shroud - chrome
Pipe Concealing Plate - chrome
Concealing Cap - white
Compression Fitting Assembly - chrome
Compression Fitting Assembly - light golden
Nipple Assembly - chrome
Nipple Assembly - light golden
Inlet Connector Assembly
Circlip
2.5 mm A/F Hexagonal Wrench
Grub screw
Grub screw
Compression Nut - chrome
'O' Seal
'O' Seal
'O' Seal
Inlet Elbow Assembly - chrome
Inlet Elbow Assembly - light golden
Concealing Bracket Assembly
Internal Set
Temperature Spindle Assembly
Cover Assembly
Component Pack 88 - components identified 'A'
Service Pack - components identified 'B'
Knob Pack - components identified 'C'
Trim Pack - components identified 'D'
2. Mira 88 spare parts diagram
280.07
280.15
090.95
A
055.14
A
D
A
623.70
802.46
802.47
A
630.61
D
630.41
C, D
004.50
618.23
618.22
106.75
555.35
280.07
280.15
A
630.41
D
A
090.95
B
B
555.35
623.70
B
C, D
802.46
802.47
618.22
A
553.35
553.54
106.75 575.12
025.14
B
904.07
C
B
B
B
920.30
573.35
37
3. Mira 88 B spare parts list
004.50
025.14
052.11
076.60
076.61
076.63
079.61
573.35
575.12
618.23
623.70
630.41
630.61
631.30
641.46
805.31
904.07
911.06
920.30
933.25
936.12
937.84
Body
Piston Assembly
Backplate Assembly
Concealing Plate - chrome
Concealing Plate - light golden
Concealing Plate - white
Building-in Shroud
Circlip
2.5 mm A/F Hexagonal Wrench
Grub screw
Compression Nut - chrome
'O' Seal
'O' Seal
'O' Seal
Foam Seal
Concealing Bracket Assembly - components identified 'E'
Internal Set
Temperature Spindle Assembly
Cover Assembly
Component Pack 88 - components identified 'A'
Service Pack - components identified 'B'
Knob Pack
4. Mira 88 B spare parts diagram
A
575.12
618. 23
630.61
004.50
B
052.11
631.30
B
911.06
B
B
641.46
B
025.14
E
E
076.60
076.61
076.63
B
920.30
E
E
573.35
618.40
B
079.61
937.84
Section
Customer Care
Guarantee of Quality
Spare Parts
Mira Showers guarantee your product against any defect
in materials or workmanship for the period shown in the
Guarantee Registration Document included with your
shower.
Alternatively, to confirm the applicable guarantee period
please contact Customer Services.
To validate the guarantee, please return your completed
registration card.
Within the guarantee period we will resolve defects, free
of charge, by repairing or replacing parts or modules as
we may choose.
To be free of charge, service work must only be undertaken
by Mira Showers or our approved agents.
Service under this guarantee does not affect the expiry
date.
The guarantee on any exchanged parts or product ends
when the normal product guarantee period expires.
Not covered by this guarantee:
Planned maintenance, or replacement parts required to
comply with the servicing requirements of the TMV 2 and
TMV 3 healthcare schemes.
Damage or defects arising from incorrect installation,
improper use or lack of maintenance, including build-up
of limescale.
Damage or defects if the product is taken apart, repaired or
modified by any persons not authorised by Mira Showers
or our approved agents.
This guarantee is in addition to your statutory and other
legal rights.
We maintain an extensive stock of spares and aim to provide
support throughout the product’s expected life.
Spares can be purchased from approved stockists or
merchants (locations on request) or direct from Customer
Services.
Spares direct will normally be despatched within two working
days. Payment can be made by Visa or MasterCard at the
time of ordering. Should payment by cheque be preferred,
a pro-forma invoice will be sent.
All spares are guaranteed for 12 months from date of
purchase. Spares that have been supplied directly from us
can be returned within one month from date of purchase,
providing that they are in good order and the packaging
is unopened.
Note! Returned spares will be subject to a 15% restocking
charge and authorisation must be obtained before return.
Please contact our Customer Services Team.
Note! In the interests of safety, spares requiring exposure
to mains voltages can only be sent to competent persons.
What to do if something goes wrong
England, Scotland, Wales and Northern Ireland
Mira Showers Customer Services
Telephone: 0870 241 0888, Mon to Fri 8:00 am - 5:30 pm
Sat 8:30 am - 3:30 pm
E-mail:
technical@mirashowers.com
Fax:
01242 282595
By Post:
Cromwell Road, Cheltenham,
Gloucestershire, GL52 5EP
Eire
Modern Plant Ltd (Dublin)
Telephone: 01 459 1344, Mon to Fri 9:00 am - 5:00 pm
E-mail:
sales@modernplant.ie
Fax:
Dublin 01 459 2329
Post:
Otter House, Naas Road,
Clondalkin, Dublin 22
Modern Plant (Cork)
Telephone: 021 496 8755, Mon to Fri 9:00 am - 5:00 pm
E-mail:
cork@modernplant.ie
Fax:
021 496 8607
Post:
Tramore Road, Cork
If when you first use your shower, it doesn’t function
correctly, first contact your installer to check that installation
and commissioning are satisfactory and in accordance with
the instructions in this manual. We are on hand to offer you
or your installer any advice you may need.
Should this not resolve the difficulty, simply contact our
Customer Services Team who will give every assistance
and, if necessary, arrange for our service engineer to
visit. If the performance of your shower declines, consult
this manual to see whether simple home maintenance is
required. Please call our Customer Services Team to talk
the difficulty through, request a service under guarantee
if applicable, or take advantage of our comprehensive
After-Sales service.
As part of our quality and training programme calls may be
recorded or monitored.
Our Customer Services Team is comprehensively trained to
provide every assistance you may need: help and advice,
spare parts or a service visit.
Service
Our Service Force is available to provide a quality service
at a reasonable cost. You will have the assurance of a Mira
trained engineer/agent, genuine Mira spare parts and a
12 month guarantee on the repair.
Payment should be made directly to the engineer/agent
using Visa, MasterCard or a cheque supported by a
banker’s card.
To Contact Us
Mira is a registered trade mark of
Kohler Mira Limited.
The company reserves the right to alter
product specifications without notice.
www.mirashowers.com
P2741/11 (G72)
© Kohler Mira Limited, April 2008
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