44 • vacon
INSTALLATION
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5
5.2.2
Cooling system connections
The external cooling system shall be connected to each one of the cooling elements of the inverter or fre-
quency converter.
NOTE: It is forbidden to connect the cooling elements in series.
The delivery comprises hoses (Technobel Noir Tricoflex, Art.no 135855) 1.5m in length and 16mm in di-
ameter (CH5, CH6, CH7). The hoses are inserted in 1400-mm UL94V0 approved conduits (type HFX40).
These hoses have screw type connectors with internal thread. The connection of the hoses is made on the
aluminium adapter (external thread) of the cooling element. The connection of the line hose shall be made
avoiding any twisting of the hose on the element.
Figure 5-21. Aluminium hose adapters
Figure 5-22. External thread of hose adapter
For all other chasses (CH3, CH4), the standard delivery includes fast connectors of type 'Tema', series 1300
or 1900. The fast connectors are available as option also for CH5, CH6, CH7.
Chassis
Thread on
element
(internal)
BSPP
1)
Connector type or
hose type
Thread
(cust.)
BSPP
2)
Max. pressure
(entire system)
Pressure loss,
(fast connector
+ element)
Pressure loss,
(hoses + element)
CH3 G3/8" 1300NE2
1/4"
6 bar
0.25 bar
CH4 G3/8" 1300NE2
1/4"
6 bar
0.25 bar
CH5 G3/4" Technobel
16*23.5
G1/2" 6
bar
0.2
bar
CH6 G3/4" Technobel
16*23.5
G1/2"
6 bar
See table below
See table below
CH7 G3/4" Technobel
16*23.5
G1/2"
6 bar
See table below
See table below
Table 5-8. Liquid connector types (all pressure values at nominal flow)
1)
Use sealing (e.g. Usit-R Metal washer-rubber sealing) for this type of connection according to ISO standard 228-1
2)
Use sealant or sealing tape for this type of connection
