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t24a.txt
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1998-10-07
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Summary
Fitting a washing machine requires some degree of competence
in both plumbing and electrical work. Read through the
following tasks to find out more:
1 About washing machines
2 About water pressure
3 About self-bore valves
4 About tee-connections
5 About appliance valves
6 Fitting the waste system
Tools
Adjustable pliers x 2, heat gun, pipe cutter, wire wool,
hacksaw.
Materials
Washing machine valves, pipe, pipe connectors, flux,
solder.
Step 1 - About washing machines
Washing machines may need a supply of both hot and
cold water and a substantial discharge of the waste
into a soil stack or gully. They also require electricity,
which you should supply as a fixed appliance.
Step 2 - About water pressure
If you are fitting a washing machine downstairs, the
pressure should be sufficient. The washing machine
instructions will detail what pressure is required.
The closer (in height) that you fit the washing
machine to the supplying cistern, the less pressure
there will be available. If in doubt, check with
your local water authority.
Step 3 - About self-bore valves
If the location for your washing machine has hot and
cold water pipes that run directly behind it, you may
be able to fit self boring valves. These can be fitted
with no special plumbing tools. Turn off the supply
valve to the pipe before you begin. As you insert the
valve the integral cutter bores a hole in the pipe
and the clamp forms a seal against the pipe with a
special washer.
Step 4 - About tee-connections
If you are unable to use self-boring tap fittings,
you will need to connect to both supply pipes using a
tee-connector and run supply pipes to your chosen
position.
Step 5 - About appliance valves
Appliance valves are available for the hot and cold
supply pipes and will connect in various ways depending
on your needs. A tee-piece valve will fit in very much
the same way as a tee-connector. Other valves will fit
to the pipe work using a compression fitting and have a
thread for the connecting hose. Use an appliance valve
to isolate the appliance in the event of a fault.
Step 6 - Fitting the waste system
The outlet hose from the washing machine must be fitted
to an appropriate waste system. Most suppliers will
provide the standpipe and trap system you need.