Schwing SP 1800, Original Operating Instructions

Page: 472 / 492

● A catch basket must be fastened at the end of the delivery line and
a wash-out adaptor must be fitted on the head of the delivery line.
The catch basket and washout adaptor must fit the delivery line
system.
● The concrete must be able to flow freely from the end of the deliv‐
ery line.
● There must be no persons present within an area of 3 m around
the delivery line, at the end of the delivery line and, in particular, in
front of the opening in the catch basket.
● Care must be taken to ensure that any concrete that might be ex‐
pelled from the catch basket cannot injure anybody or cause any
damage.
● The wash-out adaptor must be fitted with a separate, large dump
cock and a pressure gauge.
● The pressure gauge must be kept under constant observation dur‐
ing the cleaning process. The pressure in the delivery line must be
rapidly dumped via the dump cock in the event of a sudden drop in
pressure (concrete column exiting from the end of the line) or in‐
crease in pressure (risk of blockage).
● The sponge ball or the plug used to push the concrete out must be
sufficiently dense that the air does not pass through it into the con‐
crete. In addition, the delivery line must be sealed to the rear when
the sponge ball or plug is caught in the catch basket.
● Only work on the delivery line (particularly when opening the deliv‐
ery line) if it has been depressurised. Make sure that the com‐
pressed air has been dumped completely.
● The dump cock must be opened in such a way that no-one can be
injured by concrete residue that might be expelled from the dump
cock.
● Separate delivery lines that are cleaned with compressed air must
be securely fastened so that they cannot move uncontrollably.
● If continuing distribution systems (e.g. rotary distributors), gate
valves or other delivery line elements are connected to the delivery
line, they must be secured in such a way that they cannot move
uncontrollably.
2.8.4 Protection against water
Water spraying on the machine from random directions has no dam‐
aging effect. The electrical system is protected against spray water,
but is not waterproof.
Safety Manual
Concrete delivery and placing machines
54
01/2018 Rev16 EN