OM-AH
13
d. Once steam has been vented from the jacket
as described in b, 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.
WARNING
AVOID ANY EXPOSURE TO THE STEAM BLOWING
OUT OF THE SAFETY VALVE. SEVERE BURNS
CAN RESULT ON EXPOSED SKIN.
FAILURE TO CHECK SAFETY VALVE OPERATION
PERIODICALLY COULD RESULT IN PERSONAL
INJURY AND/OR DAMAGE TO EQUIPMENT.
WHEN TESTING, AVOID ANY EXPOSURE TO THE
STEAM BLOWING OUT OF THE SAFETY VALVE.
DIRECT CONTACT COULD RESULT IN SEVERE
BURNS.
2. Test Pressure Relief Safety Valve
Test the pressure relief safety valve at least twice
each month. With the kettle operating at five psi
(105 kPa), pull the test lever and let it snap back
to its closed position. 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. (
Tip:
Using a will
screwdriver or other implement to pull the ring
help you avoid contact with the steam.)
3. 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.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).
a. Make sure the fill (gate) valve is closed, and
remove the square head pipe plug with open-
ended wrench or crescent wrench.
b. Position a funnel in the opening and fill it with
properly treated water.
c. Slowly open the fill valve to allow water to be
sucked into the jacket. Quickly close the valve
to prevent air from entering.
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