Free Cooling hydraulic module
A filter with a mesh size of 0.7 mm is factory fitted inside the free cooling circuit pipe to protect the micro-channel coils from any
contamination. During system start-up, after a few hours of operation, it is recommended that the cleanliness of the filter is checked
to ensure no debris was been caught in the mesh.
The filters do not have any particular operating requirements. However, the mesh must be cleaned or changed as necessary.
To check the level of fouling, two branch connections (2) are provided upstream and downstream of the filter for the installation of a
differential pressure sensor (not provided).
Filter replacement procedure
1. Close the Free Cooling circuit valve and close the manual valve
2. Unscrew the clamp (4) and remove the clamp (3)
3. Swivel the piping so that the filter (1) can be accessed
4. Clean the filter using water or replace it if necessary (the filter cleaning frequency depends on the fouling level in the network).
5. Refit the clamps and tighten. For the tightening torques for the screws, nuts and bolts, refer to table 13.5 – Tightening torques for
the main fastenings
6. Check that the clamps are correctly sealed
7. Re-open the manual valve.
8. If necessary, top up the glycol with a concentration suitable for the installation
Expansion tank
If the Free Cooling option is combined with the expansion tank, the tank is supplied in the machine in a non-final position. To be installed
by the installer. The tank should be positioned vertically and fixed outside the machine. A 2 m long hydraulic hose is supplied for the
connection.
12 - OPTIONS
EN-83
AQUACIAT
POWER
™ LD/ILD
