OM/SM-EE-CE 13
7.1 Periodic Maintenance
A Maintenance & Service Log is provided at the
back of this manual with the warranty
information. Each time maintenance is
performed on your Groen kettle, enter the date
on which the work was done, what was
done, and who did it. Keep this manual on file
and available for operators to use.
Periodic inspection will minimize equipment
down time and increase the efficiency of
operation. The following points should be
checked:
a. Check the pressure/vacuum gauge every
day. The gauge should show a vacuum of
20 to 30 inches, when the kettle is cold. If it
does not, see “Jacket Vacuum” below.
Be sure that the pressure/vacuum gauge shows
at least 20 inches of vacuum.
b. Also check the jacket water
level every day. It should
be between the marks on
the gauge glass. If the level
is low, see “Jacket Filling
and Water Treatment” on
page 12.
c. Test the safety valve at
least twice each month.
Test the valve with the
kettle operating at 15 psi
(105 kPa), by pulling up the
test valve chain for at least
5 seconds. Then release
lever and let the valve
snap shut. If the valve does
not activate, or there is no evidence of
discharge, or the valve leaks, stop using
the kettle and contact a qualified Groen
service representative.
7.2 Jacket Vacuum
Test the safety valve at least twice monthly.
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).
7.0 Maintenance
NOTICE: Contact Groen or an authorized Groen representative when repairs are required.
WARNING
WHEN TESTING, AVOID ANY EXPOSURE TO
THE STEAM BLOWING OUT OF THE SAFETY
VALVE. DIRECT CONTACT COULD RESULT
IN SEVERE BURNS.
WATER LEVEL
BETWEEN
LINES
PRESSURE 20 - 30
BELOW ZERO
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