Flushing Procedure - MasterCool MASTERCLEANSE 69900 Operating Instructions Manual

Valve Position 1:
Valve Position 2:
Valve Position 3:

FLUSHING PROCEDURE:

1. Attach the hoses to the item being flushed.
a. For automotive use, Mastercool adapter kit 69925 is recommended.
b. Flushing in the reverse direction of refrigerant flow will give best results.
2. Add clean Mastercool flushing fluid to flushing machine tank by removing the flush fill cap
(4L) of flushing fluid recommended.
3. Turn the valves on the machine to "Valve Position 1".
4. Turn on the pump.
5. Verify flushing fluid returning to the tank through the "FLUSH RETURN CAP"
Note: If the flushing fluid does not start flowing, or the flow is very low, see the troubleshooting procedures.
6. Flush until the flushing fluid in the hose for fluid returning to the machine is the same color as the fluid coming from
the machine. If the flushing fluid becomes dirty, drain the fluid and replace with clean fluid and repeat the flushing
procedure.
Note: There are too many variables to say how many parts the fluid will clean. The user will have to use their own
judgement on when to stop flushing and when to change the fluid.
FLUSHING LARGE ITEMS:
If the internal tank gets low while filling the item being flushed, add more flushing fluid while the pump is still running.
Keep adding flushing fluid until flushing fluid is returning to the internal tank and there is enough flushing fluid in the
internal tank to prevent air from going into the pump. It is best to keep the level of flushing fluid above the tank outlet
fitting.
When purging the extra flushing fluid, add a hose to the external tank connection
to collect the extra flushing fluid. The external tank must be at the same level as the internal tank or lower than the
internal tank. Open external tank valve
4
.
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. A minimum of 1 gallon
2
. Check for flushing fluid leaks.
3
. Put the hose into an external tank
6