13
Maintenance
NOTICE: Contact an authorized Groen representative when repairs are required.
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:
1. Jacket Vacuum/
Removing Air From Jacket
(By Operator)
Every day, while the kettle is cold, read the
pressure/ vacuum gauge. A positive reading
or a negative reading between zero and 20"
vacuum on the pressure/ vacuum gauge
indicates excess air in the jacket. Air in the
jacket slows kettle heating and can prevent
the kettle from reaching operating
temperature. To remove air:
a.
Start the kettle. (See the
Operation
section).
b.
Make sure the elbow on the outlet of
the pressure relief valve is turned so
that escaping steam is directed down
toward the floor. Be sure and follow the
instructions on the attached pressure
relief valve tag.
c.
When the pressure/vacuum gauge reaches
a positive pressure reading of 5 PSI, release
trapped air by lifting the pressure relief valve
ring for about one second. Repeat this step,
then let the valve ring snap closed, so the
valve will seat properly and not leak.
2.
Pressure Relief Valve
(By Operator)
At least twice a month, test the pressure
relief valve. Test the valve with the kettle
operating at 15 PSI (105 kPa), by holding
the test ring for at least five seconds. Then
release the ring and permit the valve to snap
shut. If the ring does not activate, if there is
no discharge, or if the valve leaks, stop
using the kettle immediately and contact a
authorized Groen service representative.
WARNING
AVOID ANY EXPOSURE TO THE STEAM
BLOWING OUT OF THE PRESSURE
RELIEF VALVE. SEVERE BURNS CAN
RESULT ON EXPOSED SKIN.
FAILURE TO CHECK PRESSURE RELIEF
VALVE OPERATION PERIODICALLY
COULD RESULT IN PERSONAL INJURY
AND/OR DAMAGE TO EQUIPMENT.
The pressure gauge should show a vacuum
of 20 to 30 inches when the kettle is cold.
Make sure that the open end of the elbow on
the pressure relief valve is directed
downward.
