Kamco CLEARFLOW CF90: QUANTUM Operating & Service Manual page 8

6. Once the water remains reasonably clear, restore
circulation by rotating the valve back through
180° into re-circulation mode.
7. Check that the liquid level in the tank remains
15cm above the minimum mark. Add more water
if necessary. Vent all radiators to ensure that
there are no air pockets. Use a cloth to absorb
any liquid expelled, as the system water may be
discoloured and likely to stain.
Issue: Mar 2008 Section B – Using the Quantum for Power Flushing
8. The flushing chemical may now be added. See
page B.6
Leave the pump tank cap off, or on by no more
than one turn, whilst flushing / descaling.
Page B.5