Danfoss iC7 Series Operating Manual page 36

iC7 Series Cooling Modules
Operating Guide
1 Screws
2 Actuator shaft
5. Place a plug into the threaded hole. The plug is included in the accessories bag.
Note that there is an o-ring seal in the aluminum block groove. It must be in place when reinstalling the relief valve.
If the relief valve is removed after the first commissioning, replace the o-ring seal with a new one.
Illustration 23: Plugging the Hole of the Relief Valve
1 Plug
2 O-ring
6.
Fill the cooling system. See
7. Close the valves V219 and V216.
8. Connect the pressurizing pump to valve V212.
9. Open valve V212 and make sure that also V211 is open.
10. To increase the pressure in the system, start the pump.
11. Read the pressure from the pressurizing pump display or a separate pressure gauge/sensor connected between the pres-
surizing pump and the cooling module.
12. When the pressure reaches the maximum test pressure (1.5 x maximum pressure), close valve V212.
13.
Wait for 30 minutes, or the time specified by the national standard.
14. Before doing a close visual examination, decrease the pressure to a safe level (1 bar according to the pressure gauge -
PG11).
15. Search visually for any leaks. Check especially all connections made on site.
16. Release the pressure.
17. Open the valves V219 and V216.
18.
Drain the cooling system. See
19. Remove the plug from the relief valve connection, and reinstall the relief valve.
20.
Reinstall the valve actuator and mounting plate.
a. Before mounting the actuator, make sure that the actuator and shaft are in the same position. If necessary, turn the
manual adjustment screw. Turning the screw clockwise turns the valve to 90º and counterclockwise to 0º.
36 | Danfoss A/S © 2022.02
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6.17 Filling the Cooling System.
6.14 Draining the Cooling System.
Cooling Installation
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AQ339830072437en-000202 / 172F0589