Nordcap SDH 64 L Bedienungsanweisung Seite 5

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. Put the icemaker in operation by moving the
unit master switch ON position.
.
NOTE. The icemaker control is factory set
with the timer in defrost/harvest cycle.
T
w
The unit starts operating in the "defrost cycle"
with the following components being activated:
THE WATER INLET SOLENOID VALVE
THE HOT GAS SOLENOID VALVE
THE CONTACTOR COIL (SDE84-170-220)
THE FAN MOTOR
THE COMPRESSOR
THE TIMER
B. During the water filling operation, check to
see that the incoming water dribblers, 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.
NOTE. If, in the defrost cycle length, the
machine sump reservoir does not get filled
with water up to the rim of the overflow pipe,
remove the front panel and rotate the shaft of
the timer so to cause the dropping of the two
microswitches actuators into the beginning
of the cam slot and check for:
1. The water pressure of the water supply
line, it must be at least
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.
OPERATIONAL CHECKS
C. At completion of the water filling phase the
unit initiate automatically the first freezing cycle
with the start up of (Fig.1):
COMPRESSOR
CONTACTOR COIL (SDN85-145-215)
WATER PUMP
FAN MOTOR
D.
opening that the spray system is correctly seated
and that the water jets uniformely reach the
interior of the inverted mold cups or the exterior
of the evaporator tips; also make sure that the
plastic curtain is hanging freely and there is not
excessive water spilling through it.
E.
with the water sprayed into the molds or onto the
tips that gets gradually refrigerated by the heat
exchange with the refrigerant flowing into the
evaporator serpentine.
During the first portion of the freezing cycle, the
timer assy is standing.
.
.
F.
reached by the evaporator temperature the control
of the cycle is passed to the timer.
The components in operation during this 2nd
phase of the cycle are:
COMPRESSOR
CONTACTOR COIL (SDN85-145-215)
WATER PUMP
FAN MOTOR
TIMER
G.
beginning of the freezing cycle, in an hypothetic
ambient temperature of 21°C, the defrost cycle
takes place with the hot gas and the water inlet
valves being simoultaneously activated.
The electrical components in operation are:
COMPRESSOR
CONTACTOR COIL (SDN85-145-215)
WATER INLET SOLENOID VALVE
HOT GAS VALVE
TIMER
1 bar (14 psig)
FAN MOTOR
H.
incoming water flows correctly into the sump
reservoir in order to refill it and that the surplus
overflows through the overflow drain tube.
I.
They have to be of the right size with a thickness
of about 7÷8 mm.
If the ice cubes have not the correct size, wait for
a second harvest before attempting any
adjustment by setting the cube size control.
5
Check to see through the ice discharge
The ice making process takes place thereby,
Then, as the cube size control cut-in point is
After about 18 ÷20 minutes from the
Check, during the defrost cycle, that the
Check the texture of ice cubes just released.