Maintenance; Door Switch - N&W Global Vending Krea Installation - Use - Maintenance

Chapter 3

Maintenance

The integrity of the machine and compliance of the
corresponding systems with the regulations shall
be verified, at least once a year, by qualified per-
sonnel.
Always switch off the machine before starting main-
tenance operations which require the disassem-
bling of components.
The operations described below shall be carried
out only by personnel with specific knowledge of
the operation of the machine both from the point of
view of electrical safety and of hygiene.
GENERALITIES
In order to ensure its correct operation, the machine
shall be subject to periodical maintenance.
Listed below are the operations to be carried out and
the related expiry dates; they are, obviously, indicative
because they depend on the conditions of use (i.e. water
hardness, environment humidity and temperature, type
of product used, etc.).
The operations described in this chapter do not include
all the maintenance interventions.
More complex interventions (i.e. descaling of the boi-
ler) shall be carried out by an engineer with specific
knowledge of the vending machine.
In order to avoid risks of oxidation or of chemical aggres-
sions in general, the painted surfaces and the surfaces
in stainless steel need to be kept cleaned by using neu-
tral detergents (avoid solvents).
Jets of water are to be absolutely avoided for wa-
shing the machine.
© by N&W GLOBAL VENDING S.p.A.

DOOR SWITCH

When the door is opened, a microswitch removes the
voltage from the electrical system of the machine.
When the door is open, voltage is given to the machine
by inserting the appropriate key.
With the door open, there is no access to live-parts.
Inside the machine, only those parts which are
protected by covers and which are highlighted with
a label "disconnect voltage before removing the
cover" remain live.
Before removing these covers it is necessary to
disconnect the power supply cable from the mains.
The door can be closed only after removing the key from
the door switch, lowering the upper panel of the machine
and closing the opening of the coffee container so that
the closure control devices are enabled.
1
Fig. 23
1- Upper panel closure control device
2- Door switch
45
2
09-2013 4485-00