Scotsman MC 45 Wartungshandbuch PDF herunterladen (Seite 13)

Page 13

Page 13

FIG. 1

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEMPERATURE SENSORSBINCOMPRESSOR

TRANSF.

DATA

PROCESSOR

ELECTR.

TIMER

DIP

SWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

OPERATING INSTRUCTIONS

START UP

After having correctly installed the ice maker and

completed the plumbing and electrical

connections, perform the following “Start-up”

procedure.

A. Remove the unit front panel and locate the

control box.

B. Through the control box cover locate the

grooved head (similar to a fillister screw hea) of

the electronic program selector.

With the help of a screwdriver turn the selector

head in the OPERATION position.

C. 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).

D. 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 15 ÷ 20 seconds

NOTE

. If in the 5 minutes length of the water

filling phase the machine sump reservoir

does not get filled with water up to the rim of

the overflow pipe, it is advisable to check:

1.The water pressure of the water supply line

that must be at least 1 bar (14 psig) Minimum

(Max 5 bar-70 psig).

2.The filtering device installed in the water

line that may reduce the water pressure

below the Minimum value of 1 bar (14 psig).

3. Any clogging situation in the water circuit

like the inlet water strainer and/or the flow

control.

E. At completion of the water filling phase (5

minutes) the unit passes automatically into the

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