NW Global Vending Festival, Installation - Use - Maintenance

Page: 48 / 60

© by N&W GLOBAL VENDING S.p.A.
42
03-2012 3775 00
COOLING SYSTEM
The cooling unit is fitted on the base.
Cooling temperature, between 0° C and 3°C, is set by
the manufacturer.
1
2
3
4
5
6 7 8 9
12
Fig. 29
1- Electromagnets column
2- Dragging pinion
3- Disk sliding rail
4- Back evaporator
5- Compressor
6- Central ventilation
7- Condensing unit
8- Front ventilator
9- Temperature sensor
AUTOMATIC DEFROST DEVICE
Automatic defrost is enabled during programming.
The operation of the device is shown in the image, and
it is:
The by-pass electro valve remains open until the probe on
the evaporator detects a temperature of 4°C;
the software checks that the defrosting cycle never exceeds
10 minutes.
Fig. 30
1- Compressor
2- Condensing unit
3- Dehumidifier filter
4- Capillary
5- Evaporator
6- Liquid separator
7- Vacuum tube
8- By-pass valve
9- Hot gas tube
10- Evaporator's fans
11- Condensing unit's fan
the hot gas produced by the compressor is directly con-
veyed to the evaporator through the by-pass tube.
When the bypass electro valve is opened, the evaporator's
fans stop to avoid increasing the temperature in the cell.