Groen DH-40, Руководство оператора

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OM-DH
13
Test the safety valve at least twice monthly.
Liberally grease the wheel where it contacts the
worm gear.
Add grease through Zerk Fittings.
j. Keep electrical wiring and connections in
good condition.
k. Keep the inside of the control console clean
and dry.
l. Keep burner slots clean.
2. Jacket Vacuum/Removing Air from Jacket
When the kettle is cold, a positive pressure
reading on the pressure/vacuum gauge or a
reading near zero indicates that there is air in the
jacket. Air in the jacket acts as an insulator, and
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 five PSI,
release the trapped air and steam by pulling
up the safety valve ring for about five
seconds. Repeat this step three or four
times. Then let the pull ring snap back into
the closed position.
c. If there is little discharge (mostly air), and the
pressure gauge drops back to zero PSI,
allow the pressure to build back to five PSI
and repeat the procedure.
d. Once steam has been vented from the
jacket as described in b, above, remove the
hot water from the kettle and replace it with
cold. This will condense steam in the kettle
jacket, and the pressure gauge should show
a reading of 20 to 30 inches mercury (Hg)
below zero. If it does not, or if the vacuum is
leaking down, contact a Groen authorized
service agency to correct the problem.
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 venting steam or by draining. 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 “Water Treatment Procedure,” below.
Allow the kettle to cool completely. The
procedure will be easier with the kettle under
vacuum ( pressure gauge reading below zero).