Michael Walther from Jetting has many years of experience with fiber blowing.
Among other things, he has been an instructor at Jetting and Alcadon roadshows in Denmark.
Being a fiber blowing technician is more than just a job...
...it combines technical skills, problem-solving and working closely with the elements.
We spoke with Michael Walther, an experienced fiber blowing technician, also known as a fiber technician, with 17 years of industry experience. He shares what a typical working day looks like, the challenges he encounters and why he considers Jetting machines essential equipment in the field.
A typical working day
“My day usually starts with cutting ducts for loop cabinets and chambers,” Michael explains.
“Then I load the cable drum and head out to inspect the site. Based on the conditions, I decide where to set up the equipment. I carry out a test blow or suction test, if we are using a jetting truck, to make sure the correct ducts are connected and lead to the right termination cabinet.”
Michael continues: “Once everything is in place, I blow out any water using a cleaning sponge. I then run lubricated cleaning sponges through the ducts and use the airflow to dry the lubricant. After that, the cable is fed through.
Once the cable reaches its destination, we secure it in cabinets and chambers, connect the ducts and finally record the cable length on the pulling schedule and label the cable with an identification number.”
Challenges in the field
“There are many potential issues, but leaks in the ducts are among the most difficult,” Michael explains.
“The cable can travel several hundred meters past a leak before it stops, making the problem almost impossible to locate. Another common challenge is an excessively high fill ratio between the cable and the duct's inner diameter.”
Preparation, preparation, preparation!
“I always make sure I am well prepared. That means taking elevation differences and sharp bends into account and making sure there is enough space for all the equipment,” says Michael.
“I double-check the duct connections, make sure there is enough fuel for the compressor and check that the machine's lubricating oil is fresh. Even something as simple as wiping down the cable before feeding it into the machine can make a big difference.
Good preparation saves time and reduces the risk of errors.”
Why do I choose Jetting's cable blowing machines?
"What sets Jetting's machines apart is their quick setup and versatility. With the V2-model, for example, I can handle everything from 2 mm nano cables to 16 mm cables, even with cable drums weighing over 1000 kg.
The cable blowing machines can adapt to different types of duct installations within the same project. This gives me confidence when conditions change unexpectedly."
4 quick questions with Michael Walther
What's the best thing about working as a fiber blowing technician?
“Working outdoors in the fresh air, visiting new places and knowing that no two days are the same.”
How important is having the right equipment?
“Having the right equipment is non-negotiable. I never start a job unless I know I have everything I need.”
Advice for beginners
“Work alongside someone experienced for at least six months and learn their tips and techniques. Start by operating the machine under easier conditions and gradually take on more responsibility. Don't be afraid to ask questions. That's how you learn.”
Most memorable project?
“After 17 years, it's difficult to choose just one, but one project that stands out involved blowing a backbone cable over 130 km. It was challenging on many levels, but there were plenty of enjoyable moments along the way.”
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