BONFIGLIOLI Active Cube Series

11/17
Liquid Cooling ACU/ANG/AEC
27
6.4 Protection of heat sink against condensation
High atmospheric moisture at high exterior temperatures combined with a low coolant temperature can
result in condensation in the heat sink and the frequency inverter electronic system.
CAUTION
Condensation
Condensation can result in short-circuits in the frequency inverter and destruction of the
frequency inverter, refer to Operating Instructions of device.
 Ensure that condensation is avoided by taking the precautions described below.
6.4.1 Supply of temperature-controlled coolant
The table shows the minimum coolant inlet temperature as a function of the ambient temperature and
relative humidity. The hatched areas at the bottom right represent the non-permissible range.
Relative humidity in %
10
20
30
40
50
60
70
80
90
95
100
Ambient temperature in °C
0
-28
-20
-16
-12
-9
-7
-5
-3
-1
-1
0
5
-24
-16
-11
-7
-5
-2
0
2
3
4
5
10
-20
-12
-7
-3
0
3
5
7
8
9
10
15
-16
-8
-2
2
5
7
10
12
13
14
15
20
-13
-4
2
6
9
12
14
16
18
19
20
25
-9
0
6
10
14
17
19
21
23
24
25
30
-5
5
11
15
18
21
24
26
28
29
30
35
-1
9
15
19
23
26
29
31
33
34
35
40
3
13
19
24
28
31
33
36
38
39
40
45
6
17
23
28
32
35
38
41
43
44
45
50
10
21
28
33
37
40
43
55
14
25
32
37
41
45
If relative humidity cannot be measured, the inlet temperature must at least be the same as the ambient
temperature. The coolant inlet temperature must not exceed 45°C.