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(2)Open up the plumbing pit. Open the door on the basin unit and lift the
housing up evenly. Then hook it on the pin inside the basin unit..
Ensure the housing is securely held up.
(3)Close the main water valve inside the basin unit and the main air valve
inside the plumbing pit.
(4)Use the water and air from the three-way syringe to release the pres-
sure in the air and water lines.
(5)Unscrew the filter cases inside the plumbing pit.
The water filter case will be full of water and some water
will drip out of its holder. Have a cloth ready to wipe up
any water that spills out. Also have a bucket handy.
(6)Pull the old filters off their holders and replace them with new filters.
Before pull in the filters please do confirm the O-ring
with right setting.
(7)Screw the new cases onto the holders. Tighten them up securely.
Using excessive force or skewing the cases to screw
them on could crack them.
(8)Check that there is no water or air leakage. Open each main valves, turn
the unit on and operate the three-way syringe.
Ensure the air and water come out normally and that there
is no leakage around the filter cases.
(9)Turn the main switch off and lower housing A back into its original posi-
tion.
Hold the housing securely before unhooking it and lower
it carefully.
(10)Turn the main switch on and move the chair up and down to ensure the
housing is correctly secured and in place.
There may be some air in the water lines right after re-
placing the filter. Run the auto filler or some thing else
until the air in the lines is eliminated.
Lift up inner pit housing ↑
Hook
here
<Bottom of Basin Unit
(Plumbing pit)>
Air valve
Water valve
Air Holder
Water Holder
Ｏ -ring
Bacteria filter
Filter Case
ADVICE
ADVICE
ADVICE
CHECK
CHECK
CHECK
[6]Maintenance 11.
ADVICE