INSTALLATION AND OPERATION MANUAL, OYSTER BAR (ELECTRIC),
MODELS: OB-2-1-27-E, OB-2-2-27-E, OB-4-1-48-E, OB-4-2-54-E
PART NUMBER 10103R1
16
2005-03-23
7.0 KETTLE FUNCTIONING MODE
FUNCTIONING MODE
Direct connected steam jacketed kettles consist of a stainless steel bowl and a stainless steel
jacket which envelopes 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 that surface.
The temperatures 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 p.s.i. 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 considerable amounts 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.
8.0 KETTLE OPERATING PROCEDURES
WARNING: The kettle and its parts are hot. Use care when
operating, cleaning or servicing the kettle.
1. Fill kettle with product to desired level.
2. Slowly turn the steam control valve ON to full open position.
3. The water or food should boil 3 - 4 minutes per gallon. If it does not, then incoming
pressure should be checked to determine that it is adequate to operate the kettle efficiently.
4. Regulate steam control valve depending on type of food being prepared.
5. When food is cooked, turn off steam, remove food and clean kettle immediately to prevent
residue from drying on kettle bowl surface.
9.0 KETTLE PREVENTIVE MAINTENANCE
No preventive maintenance is required other than adhering to the Cleaning Procedure instructions.
