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Additional safety instructions
Pull plug each time before cleaning.
• Switch off machine and pull plug if you have to touch the
machine (with hand, brush, scraper, rag, etc.) while cleaning
it.
• Protective devices removed for cleaning must be properly
remounted before starting the machine.
• Do not spray water directly on the motor or the switch, nor on
the ventilation apertures in the motor housing.
Notes on cleaning:
• Before taking a break and after finishing work, clean the
concrete mixer inside and out.
• Do not pound on the mixing drum with hard objects
(hammer, shovel, etc.). A dented mixing drum impairs mixing
operations and is difficult to clean, besides.
• To clean the inside of the drum, put in some water and a few
shovels full of gravel and set the drum to revolving.
• Remove any concrete or mortar left sticking to the teeth of
the axle-drive bevel gear or the crown gear segments
immediately.
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Malfunction
Motor does not start up
Motor hums but does not start
up
Machine
starts
up,
but
becomes blocked at low load
and may switch off auto-
matically
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Please observe the enclosed terms of guarantee.
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Possible cause
⇒ no mains voltage
⇒ defective cable
⇒ thermostat is triggered reason:
− motor overload
− motor not getting enough air owing to
clogged ventilation apertures
⇒ blocked crown gear
⇒ defective condenser
⇒ extension cord is too long or its cross-section
is too small
⇒ socket is too far from mains connection and
the connecting wire's cross section is too small
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The concrete mixer requires practically no maintenance.
The mixing drum and drive shaft are bedded on ball bearings with
permanent lubrication.
Never grease the ring gear!
To preserve the value of the mixer and increase its service life,
handle it as described in "Transport and storage". Furthermore,
the concrete mixer should be checked regularly for signs of wear
and tear or functional deficiencies. This applies especially to
moving parts, screw connections, protective devices and
electrical parts.
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Pull plug each time before doing repair work.
• Switch off machine and pull plug if repair work should be
necessary. Do not start machine during repair work.
• Protective devices removed for repairs must be properly
remounted before starting the machine.
• Only the manufacturer or companies authorised by the
manufacturer may perform repair work on electrical parts or
on parts which affect the space needed to mount electrical
equipment.
• Use only unaltered original spare parts. Otherwise, the
manufacturer will assume no liability.
• Adjust tooth play (if possible) see P. 113.
Remedy
⇒ check fuse protection
⇒ have checked or replaced (electrician)
⇒ allow motor to cool and then find and eliminate
whatever caused the thermostat to respond
⇒ switch off machine, pull plug and clean or
replace the crown gear segments
⇒ send machine to manufacturer or a company
designated by the manufacturer for repairs
⇒ extension cord must be at least 1.5 mm² for a
maximum length of 25 m; the cross-section of
longer cables must be at least 2.5 mm²
15
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