Blodgett KLT-E Series User Manual download pdf (Page 12)

10 OM-KLT-E

Sequence of Operation

The following “action-reaction” outline is provided to help understand how the kettle

works.

When the operator starts up the kettle by turning the operating thermostat dial from

“OFF” to a desired setting, the thermostat switch closes. This lights up the heating

indicator light and causes the contactors to close, allowing power to ﬂow to heating

elements.

When the temperature of the steam jacket reaches the value corresponding to the

dial setting, the thermostat switch opens. This turns off the heating indicator light and

causes the contactors to open, stopping the power to the heaters.

As soon as the thermostat senses that the kettle is cooking below the set point, the

thermostat switch closes, the heating indicator light comes on, the contactors close,

and the heaters come on again. On-off cycling continues, keeping the kettle at the set

temperature.

This is why the heating indicator light cycles on and off during normal operation.

Every time the kettle is tilted, the tilt cut-off switch interrupts the power supply to the

heaters, so that the heating elements will not operate while not submerged in the

jacket water.

If steam pressure greater than 50 PSI is generated in the jacket, the safety valve will

open and relieve the excess pressure.

If the jacket water level gets too low before the heating elements overheat, the high-

limit control will open and shut off power to the elements until the kettle cools.

Setting the operating thermostat dial to “OFF” shuts down all control and heating

circuits.

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Blodgett KLT-E Series User Manual Page 12