Hilti NPR 32-22 Manual De Instrucciones Original página 14

6 Operation
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.
CAUTION
Damage to property due to incorrect handling! Incorrect handling can result in damage to the pressing
tool and/or the pressing rings.
▶ Before starting work, make sure that pressing rings, adapter jaws/pressing jaws and rolling actuator (if
present) are dust-free and well lubricated.
▶ Before starting work, lubricate pressing rings, adapter jaws/pressing jaws and rolling actuator (if present)
with "lubricant and corrosion-inhibiting spray" (#308976).
▶ Comply with the original operating instructions of the manufacturer for the pressing rings.
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.
Observe the safety instructions and warnings in these operating instructions and on the product.
6.1 Pressing with pressing jaws
If the pressing operation is ended prematurely, the fitting must be removed or, if possible, repressed.
1. Install the crimping/pressing/adapter jaw. → page 8
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.
10 English
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