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Verfügbare Sprachen
Verfügbare Sprachen
Overload Protection
To protect the user, motor and drill bit, the ETN 162/3 is equipped with a
mechanical, electrical and thermal overload protection.
Mechanical:
In case of sudden jamming of the drill bit, the drilling spindle
is unclutched from the motor by means of a slip clutch.
Electrical:
To warn the user against overstressing the tool by applying
to high an advance force, the handle includes a LED as a
overload indicator. It does not light during idle run or at
normal load. At overload, it lights red. In that case the tool
most be stress-relieved. In case of longer non-observation
of the rad indication, the electronics will independently
switch the tool off. After relieving be switching the tool off
and on, the work can be continued as normal.
Thermal:
In case of permanent overload, a thermocouple protects the
motor against destruction. Here also, the user is warned by
the overload indicator. Shortly before the maximum
temperature is reached, the indicator flashes red.
In that case, the tool switches off and can only be restarted
after a certain cooling-down period (approx. 2 minutes). The
overload indicator flashes until the machine has cooled
sufficiently and can be used again. The cooling-down time
depends on the temperature of the motor winding and
ambient temperature.
Safety Clutch
The safety clutch should absorb shock and excessive stress. It is an aid
and not an absolute protection. Therefore you have to handle and drill
carefully. To keep it in good condition, the clutch should slip for a
very short time (max. 2 seconds) in each case only. Slipping for
longer periods destroys the safety clutch. After excessive wearing the
clutch has to be renewed by an authorized service shop.
Care and Maintenance
Before the beginning of the maintenance- or repair works you
have to disconnect plug from the mains.
Repairs may be executed only by appropriately qualified and experienced
personnel.
After every repair, the unit has to be checked by an electrical specialist.
According to its design, the tool requires a minimum of care and
maintenance. However, the following maintenance works and component
checks have to be performed in regular intervals:
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