You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
closed
In geometry, topology, and related branches of mathematics, a closed set is a set whose complement is an open set. In a topological space, a closed set can be defined as a set which contains all its limit points. In a complete metric space, a closed set is a set which is closed under the limit operation.
This should not be confused with a closed manifold.
hi , can anyone pls tell me what i need to know off the top of my head and what is acceptable to revert back to viper book ,in acs assesment .. assesment next week and i ve not stopped reading the viper book.. (took a week off work and been reading for weeks!!) but i just want to know if theres...
Just been to a job for noisy pipes. Found the fault on the torbeck valve and then customer asks me to turn on the hot tap for the bath, water comes out ok but also comes out the CLOSED h/w tap in the wash hand basin (neither a trickle or full rate)
Can't understand how water comes out of a...
I have inherited a Neff integrated dishwasher which is really noisy when drawing water.
It makes a loud bang when the valve to let water in is opened and closed. I'm not aware that we have overtly high water pressure, so is this normal? Is there anything we can do to stop it making this noise...
karenb
Thread
closed
dishwasher
integrated
noisy
pressure
valve
water
Hi there
I'd really appreciate any advice regarding this problem, before I call an engineer out.
We moved into a new house last year. CH and HW all seemed to work fine. However the pump is on 24/7 - even when the room thermostat and programmer are all off. Initially the problem was...
perfectplanet
Thread
appears
boiler
bypass
closed
gate valve
leaks
opened
problem
pump
running
valve
which
I have an old radiant boiler which when running would get up to 3 bar. This would activate the pressure release out the back of the house resulting in too low pressure when cold.
I have had problems with the pressure vessel before so I though it might need pressurising again so I:
Drained...
maxwe789
Thread
closed
heating
heating system
pressure
problems
system
Hi,
My shower is awful at the moment because the cold water comes from the water tank in the loft which is probably 1 degree in temp or even ice and the thermostatic valve is completely restricting the flow becuase of the very cold water..
A friend of mine mentioned closed systems and the fact...
these are annoying me more and more - servicing them, and fitting the buggers!!!!!!!
any tips ??? at the moment im using the adjustable pan connector and flexi from the cold feed to the cistern, then pushing it back - just seems hit and miss with pan connector - sometimes leaks.
moony
Thread
back to wall
cistern
closed
cold
connector
fitting
flush
hose
job
merchant
pan
pipe
rubber
saniflo
seal
soil
soil pipe
supply
valve
wall
water
website
work
Hi all
Was called to a job this morning to sort a problem out with a shower. This was done, no problems. Customer said that there was a problem with the heating upstairs (they had taken a radiator off the wall to decorate).
Having looked at the boiler manual, i discovered it was a closed...
andyb
Thread
boiler
central heating system
closed
cylinder
expansion
expansion vessel
filling loop
fix
gas
gas boiler
heating system
hot
hot water
inside
job
manual
oil
pressure
problem
radiator
shower
system
vessel
wall
water
worcester
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.