Operating Instructions; Start Up - Scotsman MCS 46 A Service Manual

Page 10
NOTE. Ice maker pcb is equipped by jumper
cleaning reminding setting (see pag. 20)
suitable to alert users after certain time of unit
operation. This would advice for preventive
maintenance.
This time can be adjusted for 6 or 12 months
operation (upon installer advice related to
installation site water and ambient condition);
once selected time is elapsed RED front panel
lamp blinks slowly and ice maker will keep on
working anyway.
Pcb is also equipped by 3 (standard) or 60
(machines operating at 400/50/3) minutes
jumper setting start up delay (see pag. 20).
In case of pcb setting to 60 minutes ice maker
doesn't start until this time is elapsed. After
having correctly installed the ice maker and
completed the plumbing and electrical
connections, perform the following "Start-up"
procedure.

START UP

After having correctly installed the ice maker and
completed the plumbing and electrical
connections, perform the following "Start-up" pro-
cedure.
FIG. 1
- EVAPORATOR
- CONDENSER
- AMBIENT
Rx Tx
L
N

OPERATING INSTRUCTIONS

16
DIP
SWITCH
ELECTR.
15
TIMER
14
13
1
2 TRANSF.
A. Give power to the unit to start it up by
switching "ON" the power line main disconnect
switch.
NOTE. Every time the unit returns under
power, after having been switched off, the
water inlet valve, the hot gas valve and the
water drain valve get energized for a period
of 5 minutes, thus to admit new water to the
machine sump reservoir to fill it up and,
eventually, to wash-off any dirt that can have
deposited in it during the unit off period
(Fig.1).
B. During the water filling operation, check to
see that the incoming water dribbles, through the
evaporator platen dribbler holes, down into the
sump reservoir to fill it up and also that the
incoming surplus of water flows out through the
overflow pipe into the drain line.
During the water filling phase the components
energized are:
THE WATER INLET SOLENOID VALVE
THE HOT GAS SOLENOID VALVE
THE WATER DRAIN SOLENOID VALVE/S
for the first 30 seconds.
WATER DRAIN VALVE
7
8
9
10
RELAYS
3
4
5
TRIAC
6
RELAY
11
12
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WATER IN VALVE
HOT GAS VALVE
CONTACTOR COIL
FAN MOTOR
WATER PUMP
ELECTRONIC CARD