Hilti NURON NPU 100-22 Original Operating Instructions page 13

▶ Use the loop to secure the tool tether to the product as shown in the illustration. Check that it holds
securely.
▶ Secure the carabiner to a load-bearing structure. Check that the carabiner holds securely.
Comply with the operating instructions of the Hilti tool tether.
6 Operation
Observe the safety instructions and warnings in this documentation and on the product.
6.1 Punching 3
DANGER
Electric shock hazard! Working in adverse outdoor conditions can cause electric shocks and/or short
circuits.
▶ Never work on electrically live lines while a thunderstorm is in progress.
▶ Call a halt to work immediately whenever weather conditions impair the insulation characteristics, vision
or movement of the workers.
WARNING
Risk of injury due to oil escaping under high pressure! Oil escaping under high pressure can injure the
skin and the eyes.
▶ Do not use the knockout punch if damage is visible.
▶ Do not use the knockout punch if oil escapes.
▶ Make sure that the piston retracts after every punching operation.
▶ If the piston does not retract after the punching operation, press the piston return switch for manual
retraction.
WARNING
Risk of injury due to flying fragments! Flying fragments present a risk of injury to the eyes and body.
▶ Wear eye protection and protective gloves when drilling and punching.
▶ Select compatible draw studs, dies and punches.
▶ Before the punching operation, make sure that the punching insert is correctly and securely installed.
WARNING
Risk of injury! Risk of serious injury during the punching operation.
▶ During the punching operation great care must be taken to ensure that the hands and fingers are kept
well clear of the punching insert.
WARNING
Risk of injury! Unintentional starting.
▶ Remove the battery before inserting, changing or removing the punching insert.
CAUTION
Risk of injury! The accessory tool may be hot and/or have sharp edges.
▶ Wear protective gloves when changing the accessory tool.
▶ Never lay down a hot accessory tool on a flammable surface.
In cold weather the hydraulic oil can thicken and slow the punching operation. Perform 5 to 10 empty
punching operations to heat up the punching tool.
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2321735 English 9