Groen AHS-40, Operator'S Manual

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OM-AHS
4
Equipment Description
Groen AHS steam kettles are stainless steel, floor
mounted kettles with a self-contained steam source
heated by gas. A closed steam jacket covers the
lower
b
of the kettle. Heat from the gas burner boils
water in the jacket to produce steam under
pressure. To ignite the burners, Model AHS uses
electronic spark ignition.
The kettles are stationary (non-tilting). Liquids can
be removed through the tangent draw-off valve.
Exposed surfaces are stainless steel. Insulated
sheathing protects the kettle body, and a housing
encloses the controls. Three tubular legs support
the unit. Bullet feet adjust to level the kettle.
A one piece dome cover is hinged to the kettle on
the AHS. Covers for 40 gallon kettles are supplied
with counterbalancing spring actuators to hold the
covers in the fully open or closed position.
Controls provided include the ON/OFF switch, to
control electric power for the unit, and the
thermostat, to set the cooking temperature. The
automatic controls and a brief description of each
are as follows.
a. Gas pressure regulator: Protects the unit from
high pressure in the gas supply line
b. Automatic gas valves: Allow gas into the
burners as needed
c. Pressure limit switch: Turns off the burner when
jacket pressure reaches 27 PSI. Lights the
burner when pressure drops to 22 PSI.
d. Safety valve: Lets steam out of the jacket if the
steam pressure exceeds 30 PSI.
e. Low-water cutoff: Turns off the burner if the
water level in the jacket gets too low for safe
operation
Instruments also are provided to show what is
happening inside the unit. These are:
a. Water level sight glass: Indicates whether there
is enough water in the steam jacket.
b. Pressure/vacuum gauge: Shows steam
pressure, and whether too much air has entered
the jacket.
c. Heating indicator light: Indicates that the kettle
is being heated.
d. Power on indicator light: Glows when the unit is
turned on.
e. Low water indicator light: Lights to show that
jacket water needs to be replenished.
The kettle body is welded into one piece and has a
rim reinforced by a rectangular bar. The interior and
exterior of the kettle is polished to a 180 emery grit
finish. The unit is ASME shop inspected and
registered with the National Board for working
pressures up to 30 PSI.
The standard 2 inch tangent draw-off is a 316
stainless steel, compression disc valve. A
removable strainer with ¼ inch holes keeps pieces
of product from entering the draw-off during
cooking.
The jacket is filled at the factory with water
containing rust inhibitors. The kettle can operate at
steam pressures up to 30 PSI, which provide
temperatures of 150ºF (65ºC) to approximately
250ºF (121ºC). This range allows warming,
simmering, boiling, or braising.
For AHS kettles, options include:
a. Larger (3 inch) draw-off *
b. Solid disc strainer or strainer with
c
inch
perforations
c. WaterFill faucet
d. Automatic, metered water filler (Gallon Master)
e. TRI-BC basket
f. Kettle brush kit
g. Gallon etch marks*
h. Flanged feet
i. 316 stainless steel liner (for high acid products)*
KETTLE CHARACTERISTICS
Firing Rate, BTU/hour
Kettle Ignition
Natural
Gas
Propane
Gas
AHS-40 Spark 115,000 115,000
AH/1E-40 Spark 100,000 85,000
AH/1E-60 Spark 145,000 145,000
AH/1E-80 Spark 145,000 145,000
AH/1E-100 Spark 145,000 145,000
j. Powered agitators (TA/3 or INA/2)*
* Factory installed options