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Operation & Maintenance Manual - Vision Chilled Displays
Operation
1.2 - TEMPERATURE CONTROL
In the Vision system of chilled food display, the food temperature is maintained at or below 5 °C by a stream of re-circulated
cold air.
The air blows across the display deck, coming from grilles or holes on the operators side and returning to the fans via a
grille at the customer’s side.
It is essential that neither of these grilles be obstructed in any way, as the airflow and efficiency of the refrigeration
system will be restricted.
The top of the displayed food must also be 50mm lower than the edge of the well or the glass surround if fitted. This system
is very effective in a draught free environment with an ambient temperature of no more than 25°C.
Where ambient temperatures above 25 °C or draughty conditions exist, the display will not maintain food temperatures at
required levels.
Your digital controller will be pre set at the factory to give a food display temperature of 2/5°C in typical operating condi-
tions. Under normal conditions the controller displays the actual temperature of the cold air around the food.
If you need to alter the pre set temperature proceed as follows:
Gantry digital controller (See diagram below)
1.
Press Button
for a least half a second, to display the set point value.
2.
By keeping the button
pressed, use button
or
to set the desired value.
3.
When button
is released, the new value is stored.
It is important that only small adjustments of say 1 or 2°C are made to the controller at any one time. The unit should then
be allowed to operate for at least one normal working day and food core temperatures monitored before any further adjust-
ments are made.
1.3 - DEFROST CYCLES
On a gantry controller, if required, a manual defrost can be started by pressing button
for five seconds.
1.4 - DISPLAY LIGHTING
On a gantry control display lights are switched on by pressing button
with the light symbol on it. If the lights do not
come on, consult the self help page on section 3 of this manual.
