Unicum NERO - Flushing the Vending Machines Water Tract

User manual for NERO / NERO INSTANT
Page 29Version 3.2 / December 2017
ТМ
3.7.3 Flushing the vending machine’s water tract
The pipe
Figure 36 Figure 37
ATTENTION: You must discharge all water from the machine’s water tract before transporta-
tion or before storage under conditions where temperature goes below +1
0
C! Failure to con-
form to this requirement might seriously damage the vending machine!
Since the water tract always contains water during operations, you must ush the water tract before
transporting the machine or before changing any of the parts of the machine’s hydraulic system.
All of the water must also be ushed before conserving the vending machine.
Following is the procedure for ushing the water:
1. Cool down the boiler. For the purpose enter the service menu and select sub-clause “1.9.10 Cool-
ing the boiler” and start the cooling process by pressing the OK button. After you start the process
the machine will pump sufcient amount of water through the boiler to cool it down to 45 degrees.
This process can be executed for machines with external water supply as well as for machines with
internal water cans.
2. After the boiler has been cooled the machine’s display shows the OK sign, after which you should
disconnect the machine from water supply or you should remove the water supply pipes from the
cans/bottles. It is also necessary to ush water from the pipe, which supplies water from external
water supply valve or autonomous water supply pump, to the oat chamber. For the purpose re-
move the pipe from the valve or pump and direct it to the ush bucket. Make sure that all the water
from the pipe is discharged.
NOTE: when using internal water supply from cans/bottles it is also necessary to ush the autono-
mous function pump. For the purpose, following the cooling process and removal of supply pipe from the
pump, it is necessary to manually pull down the oat from the oat chamber until the pump starts and hold
the oat for 5-10 seconds. After this you must reinstall the pipe (to the valve or the pump).
3. After cooling, ush the boiler. For the purpose enter the service menu and select sub-clause “1.9.12
Boiler ush” and start the ushing process by pressing the OK button. The machine will start pump-
ing out water from the oat chamber and the rest of the water tract, which supplies water to the
boiler.
4. When the given process will be completed, you will see the OK sign on the display. This is when
you should turn the machine OFF.
5. Place a container under the boiler and remove the pipe from the bottom of the boiler (gures 36,
37) by loosening the xator screw. Then turn the machine ON and wait until all the water would be
ushed from the boiler (until the water stops dripping).
6. Turn OFF the vending machine.
7. Reconnect the pipe to the boiler with the help of the tightening screw.