14
OM-TDH
OM-TDH
14
4. Jacket Filling
Every day,
before you turn on the unit
, make
sure the water level is approximately in the
center of the water gauge glass. The jacket
was filled at the factory with the proper amount
of treated water, and is air-tight, but over time
steam may be vented and water lost.
From time to time, you may need to restore the
water to its proper level. The procedure for
adding water follows.
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
WARNING
TO AVOID INJURY, READ AND FOLLOW ALL
PRECAUTIONS STATED ON THE LABEL OF
THE WATER TREATMENT COMPOUND.
a.
Fill a mixing container with the amount of
water required. Use only distilled water.
Model
Kettle
Capacity
Jacket
Capacity
TDH-20, TDHC-20
20 Qt 18.9
�
6 Qt
5.7
�
TDH-40, TDHC-40
40 Qt 37.8
�
12 Qt 11.4
�
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. If there is a
problem distinguishing color, use a pH
meter.
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.
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.
WARNING
USE OF ANY REPLACEMENT PARTS OTHER
THAN THOSE SUPPLIED BY GROEN OR THEIR
AUTHORIZED DISTRIBUTORS CAN CAUSE
INJURY TO THE OPERATOR AND DAMAGE TO
THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.
CAUTION
INSURE ELECTRICAL POWER IS REMOVED
AND THE GAS IS TURNED OFF AT THE
SHUTOFF VALVE PRIOR TO PERFORMING ANY
MAINTENANCE ON THIS KETTLE.
WARNING
THIS KETTLE IS DESIGNED TO BE WATER
RESISTANT. FAILURE TO FOLLOW PROPER
MAINTENANCE PROCEDURES MAY VOID THE
WARRANTY.
The pressure relief valve and fill plug are located
directly behind the pressure/vacuum gauge.
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