N&W Global Vending Colibri UL 120V, Use And Installation Manual

Page: 32 / 52

© by N&W GLOBAL VENDING SpA
28
02-2007 266 00
PRINTED BOARD FUNCTIONS
AND INDICATOR LAMPS
CONTROL BOARD
This board, placed at the back of the machine, (see fig. 28)
processes the information from the push-buttons and from
the payment system; it also controls the actuations and the
push-button board.
The 15 V AC voltage required for board operation is
supplied by a transformer which is protected by a 160 mAT
fuse on the primary and by a 1.25 AT fuse on the secondary
winding. The voltage supply is rectified and stabilised
directly by the board.
The board also houses the EPROM (see fig. 28).
- the yellow LED indicates the presence of 12 V DC;
- the green LED blinking indicates that the microprocessor
is working correctly;
- the red LED indicates the operating status of the boiler
heating element.
RELAY CARDS
The 2 relay card is controlled by the actuation board and
controls some of the 120 V~ power users in the automatic
models.
Fig. 27
1 - 120 V~ users
2 - RAM
3 - EPROM
4 - Input signal
5 - Green LED
6 - Not used
7 - To the push-button board
8 - Expansion board for payment systems (optional)
9 - Yellow LED
10 - Board power supply
11 - Red LED
12 - Boiler heating element triac
13 - To boiler heating element
14 - 120 V~ users
15 - Relays K1÷K15
16 - C.P.U. board
17 - Transformer fuses
18 - 2-relay expansion board (automatic models only)
Fig. 28
RELAY ESPRESSO INSTANT
K1
ER E3
K2
ESC MD3
K3
MAC MF2
K4
PM PM/EIA
K5
M MD4
K6
EV2 EV2
K7
EV1 EV1
K8
MF1 MF1
K9
MD3 MD3
K10
MD2 MD2
K11
MD1 MD1
K12
EIA EIA
K13
K14
K15
MD4 MD4
RELAY POWER USER
K1
K2
MSCB
K3
MSB