Safety and operating instructions
48 © Construction Tools GmbH | 3390 5203 01 | 2019-08-06
Original Instructions
7.10 Checking and cleaning the
DustProtector system
An important factor for the DustProtector operation is
that the floating ring which moves in a radial direction
can follow the movements of the breaker and the work-
ing tool.
If dust penetrates it, it may block up the available instal-
lation space and interfere with the DustProtector system
operation.
n
Regularly check that the floating ring(E) can move
freely.
NOTICE Environmental damage due to chisel paste
Chisel paste is environmentally harmful and must not
penetrate the ground or enter the water table or water
supplies.
u Dispose of chisel paste polluted by dust and of cloths
with chisel paste in accordance with the applicable
regulations to avoid environmental hazards.
Regular cleaning and greasing of the installed parts and
their holders safeguards their operation and improves
the availability of the hydraulic breaker.
The inspection frequency depends on how much dust is
generated:
Normal dust generation: once a week (assuming 40–50
hours of operation).
n
Check more frequently if the floating ring(E) is stuck.
n
Remove the floating ring(E), counter ring(D) and
guide ring(F) (see chapter DustProtector/Re-
moval).
n
Clean the space in front of the flexible wiper(A) of all
loose dust.
n
Check the wiper(A) for damage.
n
Replace the wiper(A) if it is damaged.
n
Check the inside diameter of the floating ring(E) with
a suitable test gauge or with a inside calliper.
Type Size information
on test gauge
D
max
HB3100DP Ø165 170mm (6.69in.)
HB3600DP Ø170 175mm (6.89in.)
HB4100DP Ø180 185mm (7.28in.)
HB4700DP Ø190 195mm (7.68in.)
The diameter measured must not exceed the maximum
permissible diameter D
max
.
n
If it has eroded so much that its inside diameter has
become too great, replace the floating ring(E).
n
Clean and grease the floating ring(E), counter
ring(D) and guide ring(F) and install them again (see
chapter DustProtector / Installation).