Carrier 30RB-170R, Инструкции по установке, эксплуатации и обслуживанию

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12 - OPTIONS
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 with water or replace it if needed
5. The cleaning frequency for the filter depends on the degree of soiling in the network
6. 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
7. Check that the clamps are correctly sealed
8. Re-open the manual valve.
9. If needed, top up the glycol 30%.
2
1
2
3
4
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