GB
20
SERVICE SPECIFICATION
In servicing a machine, it is often, useful to compare
that individual units operating characteristics to those
of a normally operating machine. The data that follows
gives those characteristics; however, be aware that
these values are for NEW, CLEAN machine operating
at 21 °C ambient and 15 °C water. USE THESE NUM-
BERS AS A GUIDELINE ONLY.
OPERATING CHARACTERISTICS
On air-cooled models during the freezing cycle, the
discharge pressure is maintained between two preset
values by means of fan control (condenser sensor);
and at the same time, the suction pressure will also
decline reaching it’s lowest point just before harvest.
Compressor amps experience a similar drop.
On water-cooled, the discharge pressure is constantly,
maintained during the freeze cycle by the water regu-
lating valve. However, suction pressure and compres-
sor amps, will still decline as the machine freezes ice.
MODEL
Disch.
Pressure
Freeze max
bar
Disch.
Pressure
Freeze min
bar
Hi Pressure
CUT OUT
bar
Suction
Pressure
Beginning
Freeze bar
Suction
Pressure
end Freeze
bar
Cycle time
minutes
Amps
Compressor
Beginning
Freeze
Amps
Compressor
end Freeze
N132M - 230/50/1
17,5
14,0
30
4,3
2,3
15
3,8
3,2
N192M - 230/50/1
16,5
16,5
30
4,3
2,4
16
3,6
3,1
N202M - 230/50/1
17,5
15,5
33
3,5
2,0
15
4,7
3,6
N202M W - 230/50/1
16,5
16,5
30
3,5
2,2
16
4,2
3,4
N302M - 230/50/1
18
16
33
2,7
1,5
13
6,2
4,8
N302M W - 230/50/1
16,5
16,5
30
3,2
1,7
13
5,8
4,5
N402M - 230/50/1
18,5
16,5
33
2,0
1,8
12,5
8,6
6,4
N402M W - 230/50/1
16,5
16,5
30
3,5
1,9
14,5
9,0
6,7
N502M - 400/50/3
16
14
33
2,9
1,6
12
3,7
3,0
N502M W - 400/50/3
16,5
16,5
30
3,2
1,8
13,5
3,6
2,8
MODEL
N132M
N192M
N202M
N302M
N402M
N502M
Air Cooled
500
800
700
850
1300
1500
Water cooled
450
600
500
550
650
1200
Refrigerant charge R 404 A - gr.
Refrigerant metering device
Thermostatic expansion valve.
NOTE:
Always check nameplate on individual ice-
machine for special refrigerant charge before char-
ging the refrigeration system.
Such refrigerant charge is the average charge for
the N Modular Cubers. However it is important to
check nameplate for each machine.
Содержание N 132M
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