Faulty expansion vessel on W'ster 24i junior

[gasisexpensive]

which guage are you watching when pumping.

 

[kokoshka]

The one on the boiler...that shows the pressure when you top up using the filling loop. There is no gauge on my bicycle pump. Pressure has been steady for a few hours now, with CH on.

 

[gasisexpensive]

to be honest,get an expert in.
or get a cheap foot pump with a pressure guage from argos or halfords.
www.argos.co.uk
product number 740/2436 open drain valve as before,pump vessel to 0.6 bar.using your hands instead of your feet.
water will issue from drain off when you are pumping.
this will pressure your expansion vessel and give you strong shoulder muscles.
remove pump connector to expansion vessel quickly to retain air pressure.
do up drain valve and test boiler.

 

[Gasguru]

From the FAQ's "If the pump doesn't have a built in gauge, pump it up a bit high, then keep taking readings with a push-on gauge"

Cheapest option for you will be an old style cycle pump (about £4.00) and a PCL car tyre gauge from any car accessory outlets or garages. Remeber to read the "bar" scale or convert from pounds/square inch pressure.

http://www.pcl.org.uk/p_s3_pocketgauge.html