Crown GCX-2-6 Installation & Operation Manual page 22

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
FUNCTIONING MODE
DIRECT STEAM KETTLES
Direct connected steam jacketed kettles constructed to ASME CODE, consist of a stainless
steel bowl and stainless steel jacket which envelopes two thirds of the lower surface of the bowl
thus forming a sealed pressure vessel (chamber) into which steam is introduced by means of a
manual control valve.
The kettle bowl is the container for the food product which ideally should be of a liquid or semi-
liquid consistency to achieve complete contact with the bowl surface and thus fully absorb the
heat transmitted through the surface.
The temperature required for the cooking process to function adequately must be greater than
the boiling point of the liquid food product. Further, the greater the steam pressure used, the
higher the temperature and consequently the quicker the cooking process. For example steam
pressurized at 30 psi attains a temperature of 274 degrees Fahrenheit (135 degrees Celsius).
In the initial stages of the cooking process when the steam comes in contact with the cold kettle
bowl surface it condenses and forms a considerable amount of water. A thermostatic steam
trap is plumbed to the exit end of the kettle jacket. This trap is a mechanical device that closes
on high temperatures and opens when the temperature drops thus allowing the water formed
from condensate to exhaust but retain steam under pressure.
The suffix of the Model indicates the capacity of the kettle in U.S. gallons (DC-6 is 6 U.S.
gallons).
OPERATING PROCEDURE
1. Fill kettle with product to desired level.
2. Slowly turn on steam control valve to full open position.
3. The product should boil in three to four minutes per gallon.
4. Regulate steam depending on type of product being prepared.
5. When product is cooked, turn off steam supply to kettle.
6. Remove cooked product into holding pan by tilting kettle forward slowly to avoid injury from
splashing hot food.
7. Clean kettle immediately to prevent residue from drying in kettle bowl.
PART NUMBER 10122R1 22 2003-10-09