Hilti NURON NPR 24-22 Original Operating Instructions page 14

▶ Secure one carabiner of the tool tether to the retaining strap and secure the second carabiner to a
load-bearing structure. Check that both carabiners hold securely.
Comply with the operating instructions of the Hilti retaining strap and those of the Hilti tool tether.
6 Operation
Observe the safety instructions and warnings in this documentation and on the product.
6.1 Pressing with pressing jaws
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 pressing tool if damage is visible.
▶ Do not use the pressing tool if oil escapes.
▶ Make sure that the piston retracts after every pressing operation.
▶ If the piston does not retract after the pressing operation, press the reset button for manual retraction.
WARNING
Risk of injury by escaping gas! Escaping gas can injury the respiratory system or ignite.
▶ Perform pressing operations on gas-pipe systems only with specially tested and suitable combination of
pressing tool and fitting which, moreover, has the express approval of the system supplier.
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.
▶ Use suitable connecting material in combination with the correct pressing rings and pressing / adapter
jaws.
▶ Before and during the pressing operation, make sure that the pressing rings and pressing / adapter jaws
are correctly positioned.
In cold weather the hydraulic oil can thicken and slow the pressing operation. Perform 5 to 10 empty
pressing operations to heat up the pressing tool.
If the pressing operation is ended prematurely, the fitting must be removed or, if possible, repressed.
1. Insert the pressing jaw. → page 9
2. Squeeze the legs of the pressing jaws together.
▶ The pressing jaw opens.
3. Enclose the fitting to be installed in the pressing jaw.
4. Press and hold down the control switch until the piston retracts.
▶ The pressing operation is completed successfully.
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