How to Perform Cable Blowing Correctly？

1.PREPARE THE DUCT SYSTEM ACCORDINGLY

2.SELECT THE SUITABLE CABLE DIAMETER FOR THE EXISTING DUCT SYSTEM

The ratio of the outer diameter of the cableto the inner diameter of the duct should be close to 60%. With this value, the greatest blowing distance is achieved.

 

3.CHOOSE THE RIGHT COMPRESSOR

4.SELECT THE RIGHT BLOWING MACHINE

Tubes up to 16mm - FCST-FBM01 Easy Set Fiber Blowing Machine

Tubes up to 20mm - FCST-FBM03 Extended Extended Fiber Blowing Machine

Tubes up to 50mm - FCST-FBM07 Fiber Blowing Machine

5.CHOOSE THE RIGHT EQUIPMENT

a. Equipment for compressors: air coolers, air dryers, air heaters.

b. Equipment for fiber blowing: Y connectors, blowing heads.

c. Cable equipment: cable trailers, stands for cable pay-off, cable storage device for uncoiling excess cable (Twister, Figaro).

d. Accessories for tubes and microducts: trailers and unwinders, cutters, leak test-ers, calibrators, location probes.

 

6.TAKE CAKE OF THE ORGANIZATION OF THE CONSTRUCTION SITE

a. Assure free cable unwinding with the ability to control the unwinding speed.

b. Place the blowing machine on a secure and stable stand.

c. Make sure that the cable drum, blowing machine and duct are in line as much as possible.

d. Make sure that the outgoing air and the outgoing cable cannot hit anyone at the end of the blowing route.

 

7.TAKE CAKE OF EQUIPMENT FOR WORKERS

a. All operating members must be trained to work on the operated macnnes-Machines should be accompanied by operating manuals.

b.The staff should be equipped with appropriate protective clothing ensuring safe work.

c. keep workers connected at the beginning and end of the blowing route.

d. After completing blowing in, reduce the pressure to atmospheric in all devices and lines.

 

8.PREPARE THE CABLE PROPERLY

a. Check if the cable is correctly coiled on the drum.

b. Check if the cable is not deformed or damaged.

c. Make sure that the cable is not dirty.

d.Mount a suitable cap on the head of the cable.

 

9.CONDUCT A CRASH TEST

a. Attach a short 1-1.5 m length of cable to the blowing head.

b. Block the micro duct outlet.

c. In the blowing machine's feeder, place a 3-4 m long cable.

d. Set the motors to low power and start the feeder so that the cable hits the end of the blanked conduit at the highest possible speed.

e. Repeat the operation several times, increasing the power of the motors each time, until you make the cable break.

f. The maximum allowable pushing force will be the one from the last attempt, which didot damage the cable.

 

10.CARRY OUT THE BLOWING PROCESS CORRECTLY

a. Place a brass cable protector on the end of the cable.

b. Pour the appropriate amount of the lubricant into the duct.

c. Manually insert the cable into the duct for several meters.

d.Install the duct and the cable in the blowing machine.

e. After starting the feeder(without the air attached) push the cable into the duct as far as possible, at a speed of up to 60 m / min.

f. When the speed starts to drop significantly, compressed air must be slowly fed to the head at a pressure of 1-2 bar.

g. As the resistance increases and the velocity decreases, the pressure of the blow-ing air should be increased smoothly by 1 bar.

h. Repeat the process until you reach the appropriate distance.

i. If the desired length is not achieved, stop blowing, bleed the pipe and try againafter a few minutes, starting with the minimum pressure on the head.

j. The operation can be repeated several times.

*The article content is originally written by BLUE DRAGON JET.

 

 

FCST - Better FTTx, Better Life.

We have been designing, manufacturing and supplying passive components for fiber optical networks since 2003. Everything we do in FCST is designed to provide efficient, simple and innovative solutions to solve complicated tasks.

We offer 4 solutions

lFTTH ODN Solution

lUnderground Cable Installation Solution

lAerial Cable Installation Solution

lFiber Tools & Test Solution

As a FTTx solution supplier, we can also do ODM according to project. We will continue to innovate and contribute more to the construction of the global optical fiber network.