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Chapter 3
MAINTENANCE
Important notice!!
Access to the machine interior for maintenance and/or
repairs is via the side panels.
Therefore the machine is designed to be rotated, thus
allowing removal of the sides and of the back panel.
The integrity of the machine and compliance with the
standards of the relevant systems must be checked at
least once a year by qualified personnel.
With the main switches turned off, the terminal strip
connected to the line cable, the fuses and the noise
suppressor stay energised in any case.
Before starting any maintenance operations requiring
parts of the unit to be removed, the machine must
always be switched off.
The operations described below must be carried out
only by personnel who have the specific knowledge of
the machine functioning from a point of view of
electrical safety and health regulations.
INTRODUCTION
To ensure correct operation for a long period, the machine
must be subjected to regular maintenance.
The following sections contain the procedures and the
maintenance schedule, which are only a general indication,
as they greatly depend on the operating conditions (e.g.
water hardness, environmental humidity and temperature,
type of product used, etc.).
The procedures described in this chapter are not exhaustive
of all maintenance operations to be carried out.
More complex operations (e.g. boiler descaling) should be
carried out by qualified technicians only having specific
knowledge of the machine.
To prevent oxidation or the action of chemical agents, the
stainless steel and varnished surfaces should be kept
clean by using mild detergents (solvents must not be
used).
Under no circumstances should water jets be used to
clean the machine.
SANITISING THE MIXERS
AND FOODSTUFF CIRCUITS
When installing the machine, and then at least once a week
or even more frequently according to the use of the
machine and the quality of the inlet water, the mixers and
the dispensing conduits must be thoroughly sanitised
(cleaned and disinfected), to guarantee proper hygiene of
the dispensed products.
The parts to be cleaned are as follows:
- powder deposit drawers, mixer and instant drink dispensing
conduit;
- dispensing spouts;
- spout support;
© by N&W GLOBAL VENDING SpA
- remove the powder and the water funnels, the feeders,
the powder deposit drawers and the mixer wheels from
the mixers (see Fig. 22);
- in order to remove the water funnel the green ring nut
must be rotated anticlockwise;
pay special attention to closing it fully during
reassembly;
Fig. 22
1 - Dispensing spouts support
2 - Spouts support release button
3 - Funnel securing ring nut
4 - Mixer impeller
5 - Water funnel
6 - Powder deposit drawer
7 - Powder funnel
8 - Powder dispensing pipette
9 - Fresh-brew dispensing spout
- in order to remove the impellers, block the disk fitted on
the mixer shaft with a finger (see Fig. 23).
Fig. 23
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