INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 9 of 68
7503-M002-6_B
NAV26HW - NAV26HW.S - NAV26HW.ST
3.0 SAFETY DEVICES
PERIODICALLY, AT LEAST MONTHLY, CHECK THE INTEGRITY AND THE FUNCTIONAL-
ITY OF THE SAFETY AND PROTECTION DEVICES ON THE MACHINE.
All the machines are equipped with:
• “man-operated” controls (immediate stop of operation when the control is released).
•
Controls logic disposition
To prevent the operator from making dangerous mistakes;
• thermal magnetic switch on the supply line of the oil-pressure power unit motor: it avoids motor overheating
in case of intensive use (only for NAV26HW.S);
NO MODIFICATION OR CALIBRATION OF THE OPERATING PRESSURE OF THE MAXI-
MUM PRESSURE VALVE OR OF THE HYDRAULIC CIRCUIT PRESSURE LIMITER IS
PERMITTED
• controlled check valves on:
- opening of mandrel jaws (NAV26HW and NAV26HW.S),
- mandrel lifting,
- tool roll translation,
These valves have been fit in order to avoid unexpected movements of the jaws (and, as a consequence,
the wheel fall) (NAV26HW and NAV26HW.S), of the tool roll and locking mandrel, caused by accidental oil
drippings;
• fuses on the electric supply line of the mandrel motor;
• automatic power supply disconnection with the opening of the electric panel (only for NAV26HW.S).
•
Fixed guards and shelters
The machine is fitted with a number of fixed guards intended to prevent potential crushing, cutting and
compression risks.
These protections can be located in the figure below.
Fig. 5
NAV26HW.S
NAV26HW
NAV26HW.ST
