Initial Flushing Procedure (Water Only Stage, Before Addition Of Chemicals) - Kamco CLEARFLOW CF90: QUANTUM Operating & Service Manual

INITIAL FLUSHING PROCEDURE (WATER ONLY STAGE, BEFORE ADDITION OF CHEMICALS)

Note: In the following procedure, the Quantum is
first used to loosen and mobilise loose silt and
debris, before forcibly expelling it together with
the existing heavily contaminated system water.
This rids the system of as much debris and
sludge at an early stage, before establishing full,
chemically treated circulation through the
Quantum pump.
By removing loose corrosion products from the
system before addition of any chemical, the full
effect of the chemical is available to disturb,
loosen, and dissolve more stubborn
accumulations of debris.
1. Leave the pump tank cap off, or on by no more
than one turn if water splashes whilst flushing /
descaling (to allow gas to escape).
2. Check that both valves are closed (horizontal).
Open the isolating valves between flushing pump
and heating system and switch on pump
immediately. Ensure that liquid level in tank
remains at least 10 cm above the minimum mark,
adding more water if necessary.
3. Allow the Quantum pump to run for ten minutes,
reversing the direction of flow regularly. If there is
sludge and debris in the system, the water
returning into the tank will be heavily discoloured
as the high flow rate picks up looser debris.
Issue: Mar 2008 Section B – Using the Quantum for Power Flushing
4. Check all hoses and connections for leaks.
5. The Quantum has the ability to dump dirty water
when the flow is in either direction.
Change the Quantum into dumping mode as
follows, remembering that the flow reverser is
constructed so that the direction in which the
lever points also indicates the direction of flow:
5a. Operate the flow reverser lever so that the water
is flowing through the heating system in the same
direction as it is during normal heating operation.
5b. Rotate the valve on the return side through 180°
so that the dump label is clearly visible.
By doing this, system water is diverted to waste
down the dump hose, instead of returning back
into the tank. The liquid level in the Quantum tank
will immediately begin to fall.
5c.The mains water inlet supply (orange tap) should
now be turned on and adjusted so that the
volume of incoming water compensates for that
being forced out of the system to waste. Continue
dumping until the waste water runs relatively
clear. Ensure that the water level in the tank
remains at least 15 cm above the minimum mark
at all times.
Note: If the mains water cannot keep up with the
dump speed (i.e. the unit begins to empty) simply
stop dumping until the tank fills up. Alternatively
the Quantum is supplied with a secondary water
inlet facility that can also be used if a suitable
supply is available.
Continued on next page.
Page B.4