rada TF31 User manual

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PRODUCT MANUAL
TF31
DUCT-MOUNTED
TIMED FLOW CONTROLLER
IMPORTANT
Installer: This Manual is the property of the customer and
must be retained with the product for
maintenance and operational purposes.
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INTRODUCTION
The Rada TF31 is a press action water flow control valve which automatically turns
the flow off. The full cycle is reactivated each time the flow button is pressed.
The flow rate is constant and is automatically turned off after a period of approximately
30 seconds. For economy in the use of energy and water an economical flow rate can
be obtained by adjustment of the internal flow adjuster.
Product Range
TF31/1 - Duct mounted model. Valve is connected to the flow button by an
extension rod which is mounted through the wall. Suitable for wall
thicknesses between 100 mm and 140 mm (4" and 5½").
TF31/2 - As TF31/1 but suitable for wall thicknesses between 142 mm and
182 mm (5½" and 7").
TF31/3 - As TF31/1 but suitable for wall thicknesses between 206 mm and
246 mm (8" and 9½").
DESCRIPTION
SAFETY : WARNINGS
Rada products are precision-engineered and should give continued superior and
safe performance, provided:
1. They are installed, commissioned, operated and maintained in accordance with
the recommendations given in this Manual, and
2. Periodic attention is given, as necessary, to maintain the product in good
functional order. Recommended guidelines are given in the MAINTENANCE
section.
Provided the TF31 it is installed, commissioned, operated and maintained within
these recommendations, the risk of failure, if not eliminated, is reduced to the minimum
achievable.
The Rada TF31 is a 1/2" push-button flow control for duct mounting. It has a 30
second timed flow and comes with extended rod options for extra security and varying
wall thicknesses. The Rada TF31 incorporates an internal flow adjuster and has 15
mm compression fittings.
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INDEX
page
SPECIFICATION
Important Points 4
Normal Operating Conditions 4
Operating Parameters:
- Pressures 5
- Flow Rates 5
- Temperature Range 5
- Connections 5
DIMENSIONS 6
PACKCONTENTS 7
INSTALLATION
General 8
Procedure 8
MAINTENANCE
General 10
Preventative/Precautionary Maintenance 10
Lubricants 10
Maintenance Procedures 10
SPARE PARTS
Spare Parts List11
Spare Parts Diagram 11
CUSTOMERCARE Back Cover
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Important Points:
1. The installation, commissioning and maintenance of this product must be carried
out in accordance with instructions given in this Manual, and must be conducted
by designated, qualified and competent personnel.
2. Installations must comply with all Local/National Water Supply Authority
Regulations/Bye-laws, and Building and Plumbing (UK: BS6700) Regulations.
3. Rada products are precision-engineered and should give continued superior
and safe performance, provided:
- they are installed, commissioned, operated and maintained in accordance
with these recommendations.
- periodic attention is given as necessary to maintain the product in good
functional order. Recommended guidelines are given in the MAINTENANCE
section.
4. Warning: Continued use of this product in conditions outside the limits listed in
this section can severely affect the performance and reduce the effective service
life, and can present potential risk to users.
5. Disinfectants: In applications where system chemical disinfection is practised,
chlorine can be used (calculated chlorine concentration of 50 mg/l [ppm]
maximum in water, per one hour dwell time, at service interval frequency). Such
procedures must be conducted strictly in accordance with the information
supplied with the disinfectant and with all relevant Guidelines/Approved Codes
of Practice. If in any doubt as to the suitability of chemical solutions, refer to
Kohler Mira Limited, or Local Agent.
Normal Operating Conditions are considered as:
-daily usage of 1-6 hours
-installation and usage environment not subject to extremes of temperature,
unauthorised tampering or wilful abuse.
SPECIFICATION
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Operating Parameters:
Pressures
Maximum Static Pressure : 7 bar.
Flow Rates
The graph below shows the flow rate for the Rada TF31 when discharging through
an open outlet.
Temperature Range
Suitable for applications requiring water temperatures up to 70°C.
Connections
15 mm compression. Alternatively a 3/4" BSP male parallel thread is available by
removing the compression nuts.
456710
9
8
0.07
0.06
0.05
0.04
0.01
0.02
0.03
0
Flow Rate (l/min) with Flow Adjuster Fully Open
Pressure (bar)
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DIMENSIONS
Model Overall Length 'A' Wall Thickness 'B'
TF31/1
TF31/2
TF31/3 445
380
340
206 - 246
142 - 182
100 - 140
49 mm
86 mm
A
B
50 mm Diameter
32 mm Diameter
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PACK CONTENTS


 Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.

1 x Actuator Assembly
Documentation
1 x Product Manual 
1 x 'O' Seal
1 x Timed Flow Valve


1 x Valve
Mounting Adaptor 
1 x Union Assembly 
1 x Guide
2 x Locknuts

1 x Backnut 
2 x Compression Nuts
2 x Olives
2 x Adaptors 


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INSTALLATION
General
Installation must be carried out in accordance with these instructions, and
mustbeconductedbydesignated,qualifiedandcompetentpersonnel.
1. Before commencing, assure that the installation conditions comply with the
information given in the SPECIFICATION section.
2. Care must be taken during installation to prevent any risk of injury or damage.
3. Conveniently situated isolating valves must be provided for maintenance.
4. Pipework dead-legs should be kept to a minimum.
5. Inlet threaded joint connections should be made with PTFE tape or liquid sealant.
Do not use oil-based, non-setting jointing compounds.
6. To eliminate pipe debris it is essential that supply pipes are thoroughly
flushed through before connection to the TF31.
Procedure (Refer to Figure 1)
1. Drill a hole through the wall in the required position (22 mm dia. minimum, 28
mm dia. maximum). The hole must be square to the wall face.
2. Push the actuator assembly through the hole from the front of the wall, having
first made sure that the 'O' seal is correctly installed.
3. Firmly fix the actuator assembly into the wall using the 1/2" backnut supplied
(ensuring that the ‘O’ seal is retained in its groove), and secure it with the first
locknut.
4. Place the plastic guide over the hexagonal end of the push rod so that the rod
is held in place within the threaded tube of the actuator assembly.
5. Screw the second locknut loosely up to the first, and then screw the union nut
assembly tightly onto the end of the actuator assembly. Unscrew the second
locknut until it is tight against the union nut assembly.
Note!The plastic guide should rest flush within the hexagonal hole in the union
nut assembly. If the plastic guide rests a little way short of this position, remove
the plastic guide and insert sufficient packing inside it to ensure that it will rest
in the correct position when installed.
6. Screw the valve mounting adaptor tightly onto the timed flow valve.The hexagonal
spring retaining nut on the end of the valve should be flush within the threaded
section of the adaptor nut.
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Note!refer to SPECIFICATION for correct model.
7. Offer the timed flow valve assembly up to the actuator assembly and join together
by tightening the union nut. Ensure that the valve is secured in the correct
position for the water supply. The arrow on the side of the valve indicates the
direction of water flow through the valve. Note! The valve will not function
correctly if the water does not flow in the direction indicated.
8. Connect inlet and outlet pipework using the compression fittings supplied. To
commission Rada TF503 Timed Flow Controller, refer to Installation and
Maintenance Guide for TF503/503B Timed Flow Controls (Publication number
P1186).
Installation of the TF31
Figure 1
Hexagonal Push Rod
(Inside Actuator Assembly)
'O' Seal
Actuator Assembly
Timed Flow
Valve
Valve Mounting
Adaptor
Union
Assembly
Locknut
Backnut
Plastic Guide
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MAINTENANCE
General
Rada products are precision-engineered and should give continued superior and
safe performance, provided:
1. They are installed, commissioned, operated and maintained in accordance with
our recommendations.
2. Periodic attention is given as necessary to maintain the product in good functional
order. Guidelines for frequency are given below.
Rada Service Engineers/Agents will call by prior arrangement, if required. Service
Contracts may be undertaken, subject to survey - details upon request.
Preventative/Precautionary Maintenance
The frequency and extent of attention required will vary according to prevailing site
and operational conditions.
Visual: check internal component condition. Inspect for debris, scale deposition,
deformation, damage, corrosion, etc. Maintain or renew as necessary. Lubricate
applicable components using silicone-only based lubricant.
Lubricants
Important: Use silicone-only based lubricants on this product. Do not use oil-
basedorother lubricant typesasthesemay causerapiddeteriorationof seals.
Maintenance Procedures
1. Locate and isolate water supply.
2. Break the join between the actuator assembly and the timed flow valve assembly
by unscrewing the union nut.
3. Loosen off the compression fittings on the valve and swivel the valve round to
enable servicing from the front. If necessary, the actuator assembly can be
withdrawn slightly through the wall by loosening the first locknut and the backnut.
4. Remove the valve mounting adaptor and unscrew the headnut to the valve.
5. Service the valve in accordance with the instructions given in the Installation
and Maintenance Guide for TF503/503B Timed Flow Controls (Publication
number P1186).
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Spare Parts Diagram
SPARE PARTS
Spare Parts List
021 61 Actuator Assembly TF31/1
021 62 Actuator Assembly TF31/2
021 63 Actuator Assembly TF31/3
192 69 Union Assembly
555 19 Valve Mounting Adaptor
622 55 Back Nut
624 09 Union Nut
625 22 Lock Nut
631 39 ‘O’ Seal
868 10 Guide
631 39
021 61
021 62
021 63
192 69
555 19
624 09
868 10
625 22
622 55
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KohlerMiraLimited
Cromwell Road,
Cheltenham, England,
GL52 5EP, UK.
Tel.: + 44 (0)1242 221221
Fax.: + 44 (0)1242 221925
CUSTOMER CARE
BS EN ISO 9001 : 1994
Reg. No. FM 14648
Rada is a registered trade mark of Kohler Mira Limited. The
company reserves the right to alter product specifications
without notice.
Contact:
© Kohler Mira Limited,April 2002P2476/3 (H)
Guarantee
This product is guaranteed against any defect of materials or workmanship for one year
from the date of purchase, provided that the product has been installed correctly and used
in accordance with the instructions supplied.
Any part found to be defective during the guarantee period will be replaced or repaired - at
our option - without charge, provided that the product has been properly used and
maintained.
Routine cleaning and maintenance should be carried out in accordance with the
instructions supplied.
The product should not be modified or repaired except by a person authorised by Rada.
Your statutory rights are in no way affected by this guarantee.
After Sales Service - how we can help you
We have a network of fully trained staff ready to provide assistance, should you experience
any difficulty operating your Rada equipment.
Spare Parts
All functional parts of Rada products are kept for up to ten years from the date of final
manufacture.
If during that period, our stock of a particular part is exhausted we will, as an alternative,
provide an equivalent new product or part at a price equating to the cost of repair to the
old, bearing in mind the age of the product.
Customer Care Policy
If within a short time of installation the product does not function correctly, first check with
the Operation and Maintenance Advice provided in this Manual to see if the difficulty can
be overcome.
Failing this, contact your installer to ensure that the product has been installed and
commissioned in full accord with our detailed installation instructions.
If this does not resolve the difficulty, please ring your nearest Rada contact who will give
every assistance and, if appropriate, arrange for the local Service Engineer or Agent to call
on a mutually agreeable date.
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