OM/SM-TDB/7(CE)
13
Test the safety valve at least twice each month.
The pressure gauge should show a vacuum of 20
to 30 inches when the kettle is cold.
Maintenance
NOTICE: Contact Groen or an authorized Groen representative when repairs are required.
1. Periodic Maintenance
A Maintenance & Service Log is provided at the
back of this manual. Each time maintenance is
performed on your Groen kettle, enter the date of
the work, 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:
[BY OPERATOR]
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” on page 14.
b.
Also check the jacket water level each day. It
should be above mid point of the round sight
glass. If the level is low, see “Jacket Filling and
Water Treatment” on page 14.
[BY SERVICE TECHNICIAN]
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 chain for at
least five seconds. Then release the chain and
let the valve snap shut. If the valve does not
activate, (there is no evidence of discharge, or
the valve leaks) stop using the kettle
immediately and contact a qualified Groen
service representative.
d. The inside of the support housing should be
kept clean.
e.
At least twice a year, grease the two trunnion
bearings. The bearings are located within
the kettle support housing. Remove the
access panels from the support housing with
a screwdriver to gain access to the grease
fittings. Use a lithium-based, multi-purpose
grease. When the access panels are
removed, the mounting bolts for the trunnion
bearings and tilt switch can also be checked
for tightness.
WARNING
WHEN TESTING, AVOID ANY EXPOSURE TO
THE STEAM BLOWING OUT OF THE SAFETY
VALVE. DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
DISCONNECT ELECTRICAL POWER FROM
THE KETTLE BEFORE ATTEMPTING TO
GREASE THE TRUNNION BEARINGS.
f. On the crank-tilt models, the gear housing has
fittings for proper lubrication of moving parts.
Because the gears do not run in oil, periodic
