Groen DH-40, Руководство оператора

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OM-DH
12
The pressure gauge should show a vacuum of
20 to 30 inches of mercury (Hg) and the water
level should be between the markers when the
kettle is cold.
Maintenance
NOTICE: Contact Groen or an authorized Groen Service Agent when repairs are required.
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 mercury (Hg), when the
kettle is cold. If it does not, see “Jacket
Vacuum” on page 13.
b. Also check the jacket water level every day.
It should be between the markers on the
gauge glass. If the level is low, see “Jacket
Filling and Water Treatment” on page 13.
c. Test the 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 screwdriver or
other implement to pull the ring will help you
avoid contact with the steam.)
d. 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.
WARNING
WHEN TESTING, AVOID ANY EXPOSURE TO
THE STEAM BLOWING OUT OF THE SAFETY
VALVE. DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
e. Keep the primary burner gas jet air inlets
free of dust and lint.
f. The pilot flame should be blue. It should
envelop about ½ inch (12 mm) of the flame
sensor tip.
g. The gear housing has fittings for lubrication
of moving parts. The gears do not run in oil,
so periodic lubrication with grease is
necessary.
h. Frequency of lubrication depends on
operating conditions, but it should be done at
least once every six months.
i. Use a #2 grade LGI lithium grease to add
grease through Zerk fittings on gear housing
until it flows out of the bearings around the
trunnion shaft.
i. Place liberal amounts of grease on the gear
to cover the arc that is in contact with the
worm gear.