THP 94/42 R 4 XXT
THP 125/42 R 4 XXT
THP 140 H/42 R 4 XXT
GB-07.2005
S
AFETY
INSTRUCTIONS
AND
INFORMATION
C
HAPTER
2
2-16
2.9.4
Agitator
墌
To avoid air being sucked into the system, leading to spurting concrete, the hopper must be kept filled with
concrete up to the level of the agitator shaft.
墌
Keep the safety grill closed in order to avoid injuries due to reaching into the agitator hopper, or falling into it.
Do not place anything on the safety grill. Do not step on the safety grill.
墌
Never operate the machine unless the safety grill is closed and bolted into place or otherwise secured.
2.10
Safety instructions at concrete pressures in excess of 85 bar
If concrete is to be pumped at pressures in excess of 85 bar, the discharge must only be through the side outlet,
not through the distributor boom. The machine operator must take the following safety precautions and perform
the following tests:
a. Use only pipework supplied by the concrete pump manufacturer. At concrete pressures between 85 bar and
130 bar, high-pressure pipework is necessary.
b. Perform a water pressure test on pipes and couplings no later than after pumping 2000 m
3
, at a pressure 30 %
greater than the anticipated operating pressure.
c. All couplings, seals and pipe elbows that are less than 3 m from operating personnel should be regularly
replaced. (e.g. after pumping each 1,000 m
3
of concrete)
2.11
Safety instructions for maintenance and repair
WARNING:
Rectifying faults, repairs and maintenance work may be performed only
when the main drive engine is switched off, hydraulic units are
depressurised and conveying pipework is also depressurised. Take out
the ignition key.
墌
Factory-set chokes and pressure limiting devices may not be adjusted except by trained technical staff.
墌
Removing the seals from safety valves is prohibited.
WARNING
