Design Guide | iC7 Series Liquid-cooled System Modules
Beware of overheating. If the pipe temperature rises above 180 °C (356 °F), it starts to melt, and the wall thickness can
change. As the temperature of the pipe approaches the melting point, the pipe changes color from cloudy to clear, and
starts to smell burned.
6. Before removing the pipe from the jig, let it cool completely. The cooling takes more than 10 minutes.
To accelerate the cooling process, submerge the jig and pipe in water.
7. Once the pipe has cooled, remove it from the jig.
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If the pipe was heated enough, the bending is permanent.
8. Pull the cord out of the pipe. If the bend is steep, it can be necessary to open the bend slightly to get out the cord.
9. After bending the pipe, check the circularity of the pipe ends.
A Ø16/13 mm (0.63/0.51 in) tube ferrule (for example, 1827-16-13 from Parker) can be inserted into the pipe as an aid to
assess the circularity of the pipe.
An alternative way to use the bending jig is to preheat the pipes as advised in 6.4.7.1 Bending Pipes in the Air, and then fold them into
the jig and let them cool down.
6.4.8 Filling the Cooling System
Before you begin:
l Fill one system module at a time.
l Make sure that there is a point of exit for air in the cooling system during filling.
l Use a relief valve to limit the pressure to a maximum of 5 bar. The location of relief valve has an effect on the pressure. The maximum
pressure of the cooling system is 5 bar.
l The minimum filling flow rate of the cooling system is 10 l/min. The stronger the flow, the faster the cooling system is filled.
NOTICE
The numbering of the valves can be different than the one mentioned in these instructions. These instructions use the valve
numbering of the Danfoss cooling module.
Use these instructions to add liquid into the cooling system and to deair the cooling system.
Procedure
1. Mix the coolant in a sufficiently large container.
The necessary amount of coolant depends on the size of the cooling system.
2. Connect hoses to the input and output valves A (V212) and B (V213) of the drive side of the cooling module.
3. Connect a filling pump to the valve A (V212).
4. Close the pump shut-off valve C (V112 if you have a Danfoss cooling module and the single-pump option +SAP1, V112 and
V113 if you have the dual-pump option +SAP2).
5. Put the hose of the filling pump into the coolant. Make sure that air does not go into the hose.
6. Hang the other hose over the container.
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It is easy to see when all the air has come out of the cooling system.
Danfoss Drives Oy © 2024.03 AJ475942178716en-000101 / 172K2848A | 59
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