OM-HH
13
2.
Jacket Vacuum
When the kettle is cold, a positive pressure/
vacuum gauge reading or a reading near
zero indicates that there is air in the jacket.
Air in the jacket slows kettle heating.
To remove air:
a.
Start the unit.(Be sure there is water or
product in the kettle when heating).
b.
Make sure that the elbow of the safety
valve outlet is turned so that escaping
steam is directed toward the floor.
c.
When the pressure/vacuum gauge
reaches a positive pressure reading of
five PSI, release the air and steam by
pulling up or out on the safety valve
lever or ring for about 1 second. Repeat
this step, then let the pull ring or valve
lever snap back into the closed position.
WARNING
STAY AWAY FROM THE STEAM THAT IS
BLOWING OUT OF THE SAFETY VALVE.
THE STEAM CAN CAUSE A SEVERE
BURN.
3.
Jacket Filling and Water Treatment
The jacket was charged at the factory with
the proper amount of treated water. You may
need to restore this water because it was
lost as steam during venting or by draining.
a.
If you are replacing water lost as steam,
use distilled water. If you are replacing
treated water that ran out of the jacket,
prepare more treated water as directed
in step 4, “Water Treatment Procedure.”
Do
not use tap water.
b.
Allow the kettle to cool. Remove the pipe
plug from the jacket fill assembly.
c.
Open the gate valve and pour in the
distilled or treated water.
d.
Hold the safety valve open to allow air to
escape from the jacket while you pour in
the water. Continue to pour until the
water level rises to a point between the
marks on the gauge glass.
e.
Any air introduced into the jacket during
filling must be removed to obtain
efficient heating. See “Jacket Vacuum”
above.
4.
Water Treatment Procedure
a.
Obtain water treatment compound and a
pH test kit from your Groen Authotized
Service Parts Distributor.
WARNING
TO AVOID INJURY, READ AND FOLLOW
ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT
COMPOUND.
b.
Fill a mixing container with the
measured amount of water required.
(5¼ Gallons [20 liters]). Distilled water is
preferred.
c.
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.
d.
Measure the water treatment compound
(One way to do this is to add the
compound from a measuring cup.)
e.
Stir the water continuously, while you
slowly add water treatment compound,
until the water reaches a pH between
10.5 and 11.5. Judge the pH by
frequently comparing the test strip color
with the color chart provided in the pH
test kit.
(6) Record the exact amounts of water and
treatment compound used. These
amounts 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.
