Portable Residual Current Device (Prcd) - Hilti DD 350 Manual Del Usuario

1. Set the selector switch to suit the diameter of the core bit used.
2. Turn the switch to the recommended setting while turning the core bit by hand at the same time.

5.2.3 Portable residual current device (PRCD)

1. Plug the diamond core drilling machine's supply cord into a grounded socket outlet.
2. Press the ON button on the PRCD.
◁ The indicator lights up.
3. Press the TEST button on the PRCD.
◁ The indicator goes out.
WARNING
Risk of injury Risk of electric shock.
▶ If the indicator continues to light up, further operation of the diamond core drilling machine
is not permissible. Have your diamond core drilling machine repaired by Hilti Service.
4. Press the ON button on the PRCD.
◁ The indicator lights up.
5.2.4 Using the hole-starting function
1. Advance the core bit as close as possible to the work surface without brining it into contact with the work
surface.
2. Press the ON switch on the diamond core drilling machine.
3. Press the ON switch on the diamond core drilling machine again.
◁ The core bit rotates slowly (21 rpm)
4. Press the core bit against the base material.
5. After approx. 5 seconds, press the ON switch again.
◁ The core bit rotates at normal speed.
6. Continue the drilling operation.
5.2.5 Operating the diamond core drilling machine
WARNING
Risk of personal injury and material damage The diamond core drilling machine may become
damaged and the risk of electric shock is increased.
▶ Use of the water collection system in conjunction with a wet-type industrial vacuum cleaner is a
mandatory requirement for wet drilling overhead.
DANGER
Risk of personal injury and material damage The wet-type industrial vacuum cleaner switches on
and off with a delay. This allows water to run over the diamond core drilling machine. The diamond
core drilling machine may become damaged and the risk of electric shock is increased.
▶ When drilling in an upward direction, the wet-type industrial vacuum cleaner must be switched on
manually before opening the water supply valve and switched off again manually after closing the
water supply valve.
DANGER
Risk of personal injury and material damage The diamond core drilling machine may become
damaged and the risk of electric shock is increased.
▶ When drilling in an upward direction, stop working if the suction removal system stops working
(e.g. the wet-type industrial vacuum cleaner is full).
Printed: 18.10.2017 | Doc-Nr: PUB / 5236054 / 000 / 02
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