Design Guide | iC7 Series Liquid-cooled System Modules
Table 13: Recommended Connectors
Connector Tightening torque [Nm (in-
lb)]
Pipe Pipe ferrule
Parker 69111621 MALE STUD
1/2"BSPP SS STEEL 31 6L D16
EPDM SEAL
20–30 (177–266) PA 16/13 pipe Parker 1827-16-13
Do not connect the system modules in series. Connecting in series requires high flow rates and high pressure because of the
temperature rise of the coolant in the system modules.
6.4.6.1 Pipe Ferrules
CAUTION
LEAKAGE HAZARD
When the product is used in an ambient temperature of below 0 °C (32 °F), the plastic pipe shrinks more than the metallic
connector, and can cause the coolant to leak.
l In freezing ambient temperatures, use stainless steel pipe ferrules.
To make sure that the ends of the pipes stay straight, it is possible to use pipe ferrules. The pipe ferrules must be round. The pipe ferrules
cannot be made of red brass or steel because of corrosion. Allowed material for the pipe ferrules is stainless steel. See 6.4.1 Materials.
Insert the pipe ferrule fully into the pipe.
6.4.6.2 Insertion of Pipes into Cooling Circuit Connectors
The insertion length of a Ø16 mm (0.63 in) pipe is 29 mm (1.14 in). Make a mark on the pipe where it can be checked that the pipe is
correctly inserted into the cooling circuit connector.
To remove the pipe from the connector, push the release sleeve towards the connector and pull out the pipe.
For cold PA11 plastic pipes, the minimum bending radius is 138 mm (5.43 in). A smaller bending radius requires heating of the pipe. See
6.4.7 Cooling Circuit Pipes.
Figure 46: Inserting a Pipe into the Cooling Circuit Connector, mm (in)
1 The pipe ferrule 2 The pipe ferrule inside the pipe
3 A cooling circuit connector (available as option) 4 The mark in the pipe
5 The release sleeve
Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A | 53
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