Huawei NetCol8000-C070 Quick Manual page 11

Side Pipe Routing
The direction (in step 2) in which the main pipes are tightened by using hold hoops is for reference
only. The onsite situation prevails.
1. Loosen the left knocking-off padding cover of the cabinet using a Phillips screwdriver. Take out
the cover and remove the knocking-off padding.
2. Remove the elbow hoops securing the horizontal pipe using a 15# socket wrench, and then
take out the bend.
3. Remove the hold hoop securing the bend using a 15# socket wrench. To avoid deforming the
pipe, use a 75# open-end wrench to fix the pipe nut, use a 36# open-end wrench to fix the plug
at the lower part of the bend, and then remove the plug.
4. Connect the threaded connecting ends removed from the straight pipe to the external pipe
(apply thread sealant on the joints of external screw threads), and secure them using a 75#
open-end wrench and an 18# pipe wrench.
5. Connect the other end of the straight pipe to the pipe of the smart cooling product using a black
sealing ring (seal the pipe connection point using a black sealing ring).
6. Secure the pipe using hold hoops.
7. After wrapping the pipes with thermal insulation foam, install the left knocking-off padding cover.
3.8 Connecting Pipelines (Downflow)
Remove the thermal insulation foam before connecting pipes, and wrap thermal insulation foam
around the pipes after connecting the pipes.
Bottom Pipe Routing
1. Remove the baffle plate at the bottom of the cabinet, and knock off the U-shaped hole in the
baffle plate.
2. To avoid deforming the pipe, use a 75# open-end wrench to fix the pipe nut, use a 36# open-
end wrench to fix the plug, and then remove the plug.
3. Apply thread sealant evenly on the joints of external screw threads, and install the pipes from
inside out.
4. Use a 75# open-end wrench and an 18# pipe wrench to fix the pipes.
5. Install the pipe baffle plate at the bottom of the cabinet, and wrap the pipe and the baffle plate
with thermal insulation foam.
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