OM-TDB/6 15
Maintenance
WARNING
TO AVOID INJURY, READ AND FOLLOW
ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT
COMPOUND.
a.
If you are replacing water lost as steam, use distilled water. Do not use
tap water. If you are replacing treated water that was drained from the
jacket, prepare more treated water as directed below.
b.
Allow the kettle to cool completely. Remove the pipe plug from the
jacket fill assembly. Pour in the distilled or treated water. Using a
funnel will help you in this process. Hold the pressure relief valve open
while you pour, to let air escape from the jacket. Continue adding
water until the water level rises to the center of the round sight glass.
c.
Air that gets into the jacket during the filling operation must be
removed, because it will make heating less efficient. Follow the
procedure in Jacket Vacuum/Removing Air From Jacket above, to
restore a negative pressure reading.
5.
Water Treatment
a.
Place one quart of water in the mixing container. Distilled water is
recommended.
b.
Hang a strip of pH test paper on the rim of the container, with about 1
inch of the strip below the surface of the water.
c.
Stir the water continuously, while you slowly add water treatment
compound until a color between indicating a pH of 10.5 and 11.5 is
reached. (Shown on the pH test kit chart.) Judge the pH by frequently
comparing the test strip with the color chart provided in the pH test kit.
If there is a problem distinguishing color, use a pH meter.
d.
Use a measuring cup to add the compound so that you may record the
exact amount used.
e.
The amount may be used again, if the same water sources and
compound are used in the future. However, it is best to check the pH
each time treated water is prepared.
The pressure relief valve and fill
plug are located directly behind the
pressure/vacuum gauge.
