Delfield T20C, T40 Programming and operating instructions, Pre Heating Function Of Compressor Sup

5. Programming and operating instructions

5.1 STARTING UP THE APPLIANCE (only for T14D / T20C / T24C / T40)	THESE OPERATIONS MUST BE PERFORMED
	WARNING !!!
	BY A CERTIFIED INSTALLATION
	TECHNICIAN ONLY.

PRE HEATING FUNCTION OF COMPRESSOR SUP

When power is initially supplied to the cabinet, a 2-hour pre-heating phase starts and the display shows some blinking dashes “---”. During this phase the machine cannot be started. This important information is shown on a yellow label placed inside the door.

Initial pre-heating is necessary in order to safeguard the compressor’s life. Only if strictly necessary (and under the customer’s responsibility) it is possible to by-pass countdown by pressing push button “Printer/ HACCP” for about 5 seconds.

This function is not activated if machine stops/starts operating due to lack of power during working cycle.

When the appliance is powered up, it can be:

• ON displays 15	and 16
off

οC and left LED 5A on push-button 5 on, LED 1

•OFF-STAND-BY LED on push-button 1 on

To switch from one status to another, press push-button 1 .

Whenever the appliance switches from STAND-BY status to ON, a self-test is carried out: all LEDs and displays are switched on, push-buttons are checked, then the installed software version is displayed.

OPERATION

The main work cycles (chilling/freezing) performed by the appliance:

• SOFT BLAST CHILLING (+38°F / +3°C)

Pre-cooked food is rapidly chilled (90’) to a temperature of +38°F / +3°C, thus preventing proliferation of bacteria and preventing dehydration of the cooked food due to evaporation. Food can

thus be stored perfectly for 5 to 7 days without altering its original qualities. The soft cycle is recommended for delicate, thin foods such as rice, vegetables and fried foods.

• HARD BLAST CHILLING (+38°F / +3°C)

This process is designed to cool food products with a thickness greater than 2-3 cm/1’’ and is very effective for dense, greasy or large-sized foods. Variable air temperatures are used to accelerate penetration of cold into the product.

• BLAST FREEZING (0°F / -18°C)

This function freezes the product completely to a temperature of 0°F / -18°C in approximately 4 hours. The rapidity of the process prevents formation of macrocrystals essential to ensure that the product retains its original consistency and quality when thawed for consumption.

• AUTOMATIC CONSERVATION

At the end of each cycle (chilling or freezing), the appliance will automatically switch to the required storage temperature.

Two different end-cycle modes are available for each cycle:

•BY TEMPERATURE - the cycle ends when the probe reaches the required temperature.

•TIMED - cycle length is pre-set