Contracor PBT-1, Руководство по эксплуатации

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11 CONTRACOR
®
Internal Pipe Blasting TooI PBT-1
5. Operation
5.1 General Instructions
To blast clean the interior of a pipe, mount the PBT-1 tool in the appropriate centering
device. Put the tool into the pipe, hold the tool firmly and pressurize the blast machine.
BE CAREFUL NOT TO HIT THE DEFLECTION TIP AGAINST THE PIPE
Push the tool through the pipe.
Abrasive and blasted material will be blown out the other end.
On pipes, which require extensive cleaning, push the tool through the pipe and then start
blasting, pulling the tool back. Otherwise, abrasive will build up inside the pipe and hamper
blasting.
5.2 Proper Abrasive Feed
Too much abrasive seriously hampers the efficiency of the PBT-1 tool and results in heavier
wear on the parts, with lower production.
When blasting at 5.0 to 6.5 bar with the standard 12.5 mm nozzle, a 50 kg bag of sand
should last 5 to 6 minutes and 50 kg of steel grit should last 2 to 3 minutes. Adjust
abrasive feed if your rates differ significantly from these.
6. Maintenance
6.1 General Instructions
Always take care not to drop the PBT-1 tool or any of its internal wear parts. They are quite
brittle due to their hardness and break easily.
When inspecting or replacing parts, keep the tool clean and brush abrasive out of cracks,
threads, etc. Always replace the rubber gaskets before they wear through. These gaskets
are the tool’s only protection against the stream of abrasive.