Crystal Mountain CMFIWD001, Service Manual, Page: 18 / 28

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Installation, Operation & Service Manual– Form 1707001 Rev1
Cleaning the water system with citric acid if scale has built up
For a bottled unit:
 Fill a 5 gallon bottle with cold water and add 8 oz of citric acid powder and
install the bottle adapter.
 Wait for hot water to be ready. Dispense both ambient and hot water to
flush the system. Repeat this procedure until the bottle is empty.
 Drain the remaining water through the release drain.
 Fill the bottle with clean cold water and install the bottle adapter.
 Dispense both ambient and hot water to rinse the system until water is
clear.
 Drain any remaining water.
For a POU unit:
 Fill a 5 gallon bottle with cold water and add 8 oz of citric acid powder.
 Insert a ¼” OD tube to the line connector located at the back of the unit,
and insert another tube end into the bottle near the bottom.
 Place the bottle above the unit so the water in the bottle can flow into the
internal water tank by siphon.
 Wait for the hot water to be ready. Dispense both ambient and hot water
to flush the system. Repeat this procedure until the bottle is empty
 Release the remaining water through the release drain.
 Fill the container with clean cold water.
 Dispense both ambient and hot water to rinse the system until water is
clear.
 Release the remaining water.
When the “Low” indicator appears
 Check water selection switch first.
 If bottled water is used, check if the water bottle is empty and replace it,
 If POU supply is used, check and ensure adequate water supply.
 Press and hold “Lamp/Reset” button for more than 3 seconds until you
hear a long beep to activate the water pump or inlet valve.
If heavy frost builds up in the ice freezer
 Press and hold the “Hot” button for more than 10 seconds until dEF is
displayed and flashing. dEF will stop flashing when the defrost cycle starts.
 Once the defrost cycle is complete, the hot water temperature will be
displayed.