Full system check
For this task you are required to inspect all the items you checked in the cold water system check in scenario 1 and all the items in the hot system check in scenario 2.
Soundness check
This is a simple version of the full soundness check cutting out the time waiting section.
COLD SYSTEM - fit a gauge measure the pressure, turn on a cold tap recheck pressure, turn off tap recheck pressure, remove gauge.
HOT SYSTEM - as above but this time, seal the system to apply pressure. You need to cap the open vent in the loft and close the gate valve in the airing cupboard and most important TURN off or shut down all forms of heating the water, this should be done first.
To fit the gauge click on the washing machine HOSES
All I can say is.... "very Lara Croft."