13
The data inside this manual are not binding and they can be modified by the manufacturer without notice.
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NPC 280 - 400
C
HAPTER
5
I
NSTALLATION
ATTENTION
Before carrying out the installation or operating on this machine, ensure that all the personnel has read and understood the Chapter 2
“Safety“
in this manual.
5 . 1
I n s p e c t i o n
Immediately after uncrating, inspect the unit.
5 . 2
P o s i t i o n i n g
1.
The unit may be installed both outdoors and indoors.
2.
If installed indoors, the room must be well ventilated and with a sufficient height which allows the air to be expelled by fans. In
some cases it may be necessary to install fans or extractors to limit the temperature of the room.
3.
The minimum and maximum working ambient temperature are specified on the unit data plate. In extreme temperature conditions,
the protection devices may trip.
4.
The machine must be positioned on any flat surface capable of supporting its weight.
5.
Leave at least one metre around the unit to permit access during service operations.
6.
Do not obstruct or disturb the condenser's flow of thermal exchanging air.
5 . 3
A n t i f r e e z e p r o t e c t i o n
Even if the minimum working ambient temperature is above 0°C it is possible for the machine - during stoppages in the cold seasons - to find
itself in an environment with a temperature below 0°C.
In these cases, if the machine is not emptied, antifreeze (ethylene glycol) must be added in the following percentages to prevent the formation of
ice:
Add the following anti-freeze (ethylene glycol) percentages in order to avoid freezing when operating at low water outlet temperature:
ATTENTION
Carry out the level sensor calibration when the unit is activated the first time.
Repeat the operation each time the composition of the process
liquid changes.
Ambient temperature up to
[°C] (°F)
Ethylene Glycol
[% in weight]
0 (32)
0
-5 (23)
15
-10 (14)
25
-15 (5)
30
-20 (-4)
40
Table 6
A
DDING
ETHYLENE
GLYCOL
BASED
ON
THE
AMBIENT
TEMPERATURE
Water outlet temperature up to
[°C] (°F)
Ethylene Glycol
[% in weight]
5 (41)
0
0 (32)
19
-5 (23)
27
-10 (14)
34
-15 (5)
39
-20 (-4)
44
Table 7
A
DDITION
OF
E
THYLENE
GLYCOL
ACCORDING
TO
THE
WATER
OUTLET
TEMPERATURE
