Turbosol TB30, Use And Maintenance Manual

Page: 62 / 87

5
USE AND OPERATION
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561405 - IS19/07 - EN
5.8 WHAT TO DO IN CASE OF CLOGGING
The most dangerous situation during pumping is the clogging of the conveying pipe.
5.8.1
Clogging of the conveying pipe
The operator must be specifically trained to following the operations below. Ensure there is no residue
pressure in the piping and no other persons are near-by, before opning a joint. This, potentially dangerous,
operation must always be carried out, with the utmost caution, by an experienced person.
The manometer 1 (FIG.5-2) shows pressure higher than 300 bar and pumping blocks in case of clogging.
Reverse pumping cycle and run 4-8 suction cycles: the hopper content level will increase.
Clogging can now be eliminated.
The critical points are normally in correspondence of the fittings.
Steel pipes clogging
- The obstruction is located by the noise emitted upon impact of the iron hammer against the pipe:
a metallic sound is heard if the pipe is not clogged, whereas a plonking sound is heard if the pipe is clogged.
- Disconnect the clogged pipe from the piping line, once this has been pre-emptively depressurised.
- Place the pipe vertically to evacuate its contents.
Rubber hoses clogging
- The pipe is hard and rigid near the obstruction; on the contrary, the hose sags upon treading.
- Disconnect the clogged hose from the piping line, once this has been pre-emptively depressurised.
- Place the hose vertically (backing over the shoulder) to evacuate its contents (FIG.5-3A).
FIG.5-3A
If the clogging cause is a mixture that cannot be pumped, it must be evacuated from the hopper.
5.9 HIGH WASHER PRESSURE (OPTIONAL)
If the machine is equipped with high pressure washer, it must be used to clean the machine after use.