© by N&W GLOBAL VENDING S.p.A.
37
11 2008 3275 00
Chapter 3
mAiNTENANCE
the maintenance operations described by this chapter
shall be performed when the machine is live. this means
that they shall be carried out by the personnel special-
ised, trained on the use of the machine and informed
about the specific risks that this condition involves.
to power on the plant when the door is open, just insert
the key into the door switch. Whenever you insert the
key, sales motors are any way disabled.
Only the parts protected by covers and signalled
by the plate "power off before removing the cover"
remain live inside the machine.
Before removing these covers, detach the machine
from the mains.
The intactness of the machine and its compliance
with the rules of the relative installations shall be
checked by skilled personnel at least once a year.
FuNCTiONS AND ArrANgEmENT
OF BOArDS
a
ctuatioN
boarD
This board (see fig. 31 and 32) is intended to activate the
24 V~ release motors through relays. Moreover, it can
manage the signals from the cams and/or empty micros-
witches of releases.
the board can also manage the relays intended to acti-
vate the compressor and the lamps.
the board is arranged on the electric board and it is sup-
plied and controlled by the cpU board.
relaY FUnctIon
(see the wiring diagram)
K1
M1
K2
M2
K3
M3
K4
M4
K5
M5
K6
M6
K7
M7
K8
M8
K9
M9
K10
not used
Fig. 31
Condenser
1-
Evaporator
2-
Metal cover
3-
Fig. 32
DL1 - CPU data exchange signal
1-
DL2 +5Vdc presence
2-
Relay board management of compressor and lamps
3-
CPU connection
4-
Motor activation relay
5-
24V
6-
∿
motor supply
M1÷M7 release motors
7-
M8÷M9 release motors
8-
NTC probe
9-
Input
10-
Input
11-