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A sufficient vacuum has been created if the red ring on the plunger is no
longer visible and the plunger stays in the pump. When pumping, always
ensure that the pump plunger moves smoothly. After aspirating, the plunger
must be freely accessible for re-pumping. If the vacuum decreases, the
holding force must be restored by re-pumping.
The support bolt (D) increases the drilling unit's stability during drilling and
must be adjusted so that it sits firmly on the working surface.
CAUTION!
Never activate the ventilation valve (F) during drilling.
The rig can be additionally secured by holding it firmly by the handle
(E) with one hand.
For further information please see the operating instructions of the
drill rig.
Overload Protection
In order to protect the operator, the motor and the drill bit are equipped with
an electronic and thermal overload protection:
Electronic:
In case of overload due to too large feed force, the electronic
will cut OFF the machine. After discharge and switching ON
you can continue drilling again.
Thermal:
By means of a thermal element, in case of continuous
overload, the motor is protected against destruction. In fact,
the machine switches OFF automatically and only can be
switched ON again after a certain cooling period (about 2
minutes). This cooling period depends on the warming of the
motor winding and ambient temperature.
Care and Maintenance
Before the beginning of the maintenance or repair works
you have to disconnect the plug from the mains.
Repairs may be executed only by appropriately qualified and experienced
personnel. After every repair the machine has to be inspected by an electric
specialist. Due to its design, the machine needs a minimum of care and
maintenance. The following works have to be carried out regularly or rather
the component parts have to be inspected:
The power tool as well as the ventilation slots always have to be
clean.
During work, please pay attention that no foreign elements get into
the interior of the machine.
In case of breakdown, a repair has to be carried out by an authorised
service workshop.
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