AGP DM20 Sicherheitshinweise Seite 9

GB
THE WATER FEED ASSEMBLY
The water feed assembly may be mounted on either side of the motor unit as desired. To switch sides, exchange
the plug on the unused side with the water feed assembly. Use about 3 turns of thread seal tape to seal each
part when assembling.
WARNING: Check all connections of the water feed system to ensure
there are no leaks. Inspect hoses and other critical parts which could
deteriorate.
WARNING: The maximum water pressure should not exceed 70 psi (4 bar).
Indicator Holes
CAUTION: Only use clean water! Contaminated water will clog the motor's
cooling jacket, necessitating complete disassembly of the motor to
rectify.
CAUTION: Ensure that the Water Inlet Strainer is in good condition. Never
remove the strainer! The strainer is essential to help keep contaminants
out of the motor's cooling jacket.
Water Inlet Strainer
CAUTION: Have the tool repaired immediately if cooling water is clogged in the motor. Do not operate
the tool if water can not flow through the motor and exit from the spindle, or if there is an obviously
reduced/restricted amount of water flowing through the motor.
CAUTION: There is a small indicator hole on the water feed collar. If this hole leaks water, it indicates
that the water seals are worn out. Replace them immediately.
CAUTION: Never use this machine without water feed. Running dry will overheat its motor and destroy
its water seals.
Use a water collector with a wet vacuum to collect cooling water if nearby objects could be damaged by water.
CAUTION: Never allow water to freeze inside the motor. If working in temperatures near 0°C, always blow
out all water from inside the motor's cooling passages with compressed air after use.
3) SELECTING SPEEDS
Speeds are selected by pressing the UP and DOWN Diameter Selector Buttons on the control panel. There are
17 speed settings, corresponding to diameters 102 mm up to 500 mm (or 4" up to 20"). The Information Screen
will indicate the recommended bit diameter for each selection. Speeds can be selected with the motor at rest,
or when it is running. The two smallest diameter settings will have reduced torque (to avoid over-stressing the
smaller bits). The motor keeps the most recently selected speed setting in its memory until the next time the
motor is plugged in.
NOTE: The recommended speeds are based on average conditions. If the concrete is especially hard, or
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