USE AND OPERATION
7
561270 - IS19/07 - EN
37/58
-
FLUSHING WITH COMPRESSED AIR
- Connect the basket (FIG. 40-REF. 1) designed to catch the sponge to the end of the hose using a Victaulic coupling complete
with rubber gasket.
- At the other end, introduce an adequately-sized pipe sponge (FIG. 40-REF. 2) soaked in water, connect the flushing cap
supplied (FIG. 40-REF. 3) and make sure it is well fastened.
- Close the valve (FIG. 40-REF. 4).
- Connect the compressed-air hose (FIG. 40-REF. 5) from the compressor to the quick-release coupling (FIG. 40-REF. 6) on
the flushing cap.
- Start the air compressor, open the valve (FIG. 40-REF. 4), pressurize the piping for a few seconds and then close the valve.
The slurry will begin to flow out and the pressure shown on the pressure gauge will begin to fall.
- Open the valve again and adjust it so that the air pressure stays at a level sufficient to push the slurry out.
1
3
2
4
5
6
FIG.40
Before you loosen any joint on the slurry delivery hose, make sure that the valve with the safety lever is
open, that the pressure gauge shows a pressure of zero bar and that there is no residual pressure inside
the piping.
The sponge will be violently expelled from the hose. Make sure the hose is pointing in a direction where
there is no risk of harming anyone or damaging anything.
In case the pipes are found to be clogged during flushing, follow the instructions in paragraph 7.7. Be sure
to discharge the pressure before you open any coupling:
- close the valve (FIG. 40-REF. 4)
- close the compressed-air hose valve
- disconnect the compressed-air
hose from the coupling (FIG. 40-REF. 6) -
open
the
valve
(FIG.
40-REF.
4)
-
CLEANING BY REVERSE PUMPING
If the pumping line is vertical, introduce the rubber sponge into the delivery hose, start pumping in reverse mode and hold the
lever the necessary time. The concrete will be drawn back into the hopper.
Note: Each metre of Ø 100 mm piping can contain approximately 8 litres of slurry, and each metre of Ø 75
mm piping can contain approximately 4.5 litres.
If
the
piping
is
relatively
long
the
cement
may
overflow
from
the
hopper.
7.7
IMPORTANT WARNING
The following operations should be carried out only by specifically trained personnel. In particular, before
breaking a joint make sure there is no residual pressure inside the piping and that no one is standing
nearby. This operation is potentially dangerous and should always be performed with caution and by
qualified personnel only.
In case of clogging, the pressure gauge will show a pressure above 150 bar and pumping will be stopped.
If this occurs, start reverse pumping and carry out 4-8 pumping cycles. The level of the slurry inside the hopper will rise.
You can now proceed to remove the clogging.
Clogging usually occurs inside and close to the couplings.
Clogging in steel pipes
- To locate a clogging, strike the pipe with an iron hammer and listen to the sound it makes:
Содержание Beton Master
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Страница 8: ...1 CE DECLARATION 8 58 561270 IS19 07 EN ...
Страница 14: ...3 TECHNICAL DESCRIPTION 14 58 561270 IS19 07 EN ...
Страница 18: ...4 TRANSPORTATION AND HANDLING 18 58 561270 IS19 07 EN ...
Страница 24: ...5 INSTALLATION 24 58 561270 IS19 07 EN ...
Страница 28: ...6 SAFETY 28 58 561270 IS19 07 EN ...
Страница 52: ...9 SCRAPPING 52 58 561270 IS19 07 EN ...
Страница 55: ...TROUBLESHOOTING 10 561270 IS19 07 EN 55 58 ...
Страница 56: ...10 TROUBLESHOOTING 56 58 561270 IS19 07 EN ...
Страница 58: ...11 RESPONSIBILITY OF THE OPERATOR 58 58 561270 IS19 07 EN ...