Groen DEE/4 Series, Operator'S Manual

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OM-DEE/4
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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. When the pressure/vacuum gauge
reaches a positive pressure reading of 5
PSI, release the trapped 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.
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, either 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.”
b. Allow the kettle to cool. Turn the elbow
on the safety valve counterclockwise (to
avoid thread damage) until the opening
of the elbow faces upward.
c. Open the safety valve and pour the
water or treated water in at the elbow
until the water level rises to a point
between the marks on the gauge glass.
CAUTION
BEFORE YOU HEAT THE KETTLE AGAIN
FOR ANY PURPOSE, TURN THE ELBOW
BACK CLOCKWISE UNTIL THE OPENING
FACES DOWNWARD.
e. Air introduced to the jacket during filling
must be removed to obtain efficient
heating. See “Jacket Vacuum” above.
4. Water Treatment Procedure
(1) Obtain water treatment compound and a
pH test kit from your authorized Groen
parts distributor.
WARNING
TO AVOID INJURY, READ AND FOLLOW
ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT
COMPOUND.
(2) Fill a mixing container with the
measured amount of water required.
(See table). Distilled water is
recommended.
Kettle Model Jacket Capacity
DEE/4-20 2½ Gallons
DEE/4-40 3½ Gallons
DEE/4-60 4 Gallons
(3) 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.
(4) Measure the water treatment compound
(One way to do this is to add the
compound from a measuring cup.)
(5) 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. If you are color blind use an
electroanalytical instrument to measure
the pH level or have a person who is not
color blind read the test strip color level.
(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.
WARNING
ELECTRIC POWER ALWAYS SHOULD
BE SHUT OFF BEFORE WORK IS DONE
ON INTERNAL COMPONENTS.
5. Service personnel should check the unit at least
once a year. This periodic maintenance should
include inspecting electrical wires and connect-
ions, cleaning the inside of the control console.
At least twice a year, grease the two trunnion
bearings and worm gear. Groen recommends
the use of number two grade LGI lithium grease.
Add grease through the zerk fittings on the gear
hosing until the grease flows out of the bearings
around the trunion shaft. Also, add grease in the
gear to cover arc that is in contact with the worm
gear. Clean up excess grease.
WARNING
DISCONNECT ELECTRICAL POWER FROM
THE UNIT BEFORE ATTEMPTING TO
GREASE THE TRUNION BEARINGS.
(Groen Part No. 110324)
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OM-DEE/4
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4
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5
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