Danfoss iC7 Series Operating Manual page 38

iC7 Series Cooling Modules
Operating Guide
7. Fill up to about 60% to compensate the de-airing. Use expansion tank pressure gauge.
Make sure that the shut-off valve for pressure gauge is open.
8. Stop the filling pump after the correct coolant level has been achieved.
9.
Close the valves V212 and V211.
Use a check valve with the filling pump to make the procedure easier.
10.
Adjust the pressure to 1 bar by using the pneumatic connection V217.
11. Start the pump P.
System will be de-airing for a while which leads to coolant level drop.
12. Refill and adjust pressure repeatedly until the coolant level does not drop anymore.

M4
V8 V7 V6 V5
Illustration 25: Filling the Cooling System
1 Cooling module
V212 Filling valve
V213 Draining valve
V112 Pump shut-off valve. +SAP1: V112, +SAP2:
(V113) V112 and V113.
V218 De-airing valve
P Filling pump
f
P Pump, cooling module
C1 First cabinet
C2 Second cabinet
6.17.2 Filling the Cooling System by Forced De-airing
Use these instructions to add liquid into the cooling system and to de-air the cooling system.
38 | Danfoss A/S © 2022.02
C2 C1
M3 M2
V8 V7 V6 V5 V8 V7 V6 V5 V8 V7 V6 V5
V218
M1
P f
P
V212 V213 V112
(V113)
M1 Drive 1
M2 Drive 2
M3 Drive 3
M4 Drive 4
V5 Drive valve V5
V6 Drive valve V6
V7 Drive valve V7
V8 Drive valve V8
Cooling Installation
1
AQ339830072437en-000202 / 172F0589