Description - Hilti PRE 3 Operating Instructions Manual

Symbol for Laser Class II / Class 2
Laser class II Laser class 2
according to according to
CFR 21, § 1040 EN 60825-
(FDA) 3:2007

2 Description

2.1 Use of the product as directed
The Hilti PRE 3 is a rotating laser tool that emits a rotating laser beam.
The tool is designed to be used for determining, transferring and checking reference levels in the horizontal plane.
Examples of uses are the transferring of datum lines and heights.
Use of tools or mains adapters which show visible signs of damage is not permissible.
Operation outdoors or in damp conditions in "Charging during operation mode" is not permissible.
Hilti supplies various accessories which allow the tool to be used with maximum efficiency.
The tool and its ancillary equipment may present hazards when used incorrectly by untrained personnel or when used
not as directed.
To avoid the risk of injury, use only genuine Hilti accessories and insert tools.
Observe the information printed in the operating instructions concerning operation, care and maintenance.
Take the influences of the surrounding area into account. Do not use the appliance where there is a risk of fire or
explosion.
Modification of the tool is not permissible.
2.2 Features
Using the tool, a single person can level and align in all planes very quickly and with great accuracy (tool used in
conjunction with the PRA 30 laser receiver).
The preset speed of rotation is 300 U/min (r.p.m.). The tool levels itself automatically after it is switched on (automatic
leveling within an inclination of 10°(±5°)).
LEDs indicate the tool's current operating status.
The PRE 3 is easy to set up and operate and features a rugged casing. The tool is powered by a rechargeable Li‑ion
battery which can be charged while the tool is in operation.
2.3 Horizontal plane
After switching on, the tool levels itself automatically by way of 2 built-in servo motors.
2.4 Inclined plane (manual alignment in the desired plane of inclination)
The desired inclination can be set with the aid of the PRA 78 slope adapter. For further information on using the slope
adapter, please refer to the instruction sheet supplied with the PRA 78.
2.5 Shock warning
The built-in shock warning function (becomes active one minute after completion of auto-leveling). The tool goes into
warning mode if it is knocked off level (due to vibration or impact) while in operation: all LEDs blink; the head of the
laser stops rotating; The laser beam is switched off.
2.6 Automatic cut-out
The laser does not switch on and all LEDs blink if the tool is set up outside its self-levelling range or movement is
blocked mechanically. The tool can be set up on a tripod with a 5/8" thread or stood directly on some other steady
surface (free of vibration). When automatic leveling is activated for one or both axes, the built-in servo system ensures
that the specified accuracy is maintained. The tool switches itself off when automatic leveling cannot be achieved (tool
Location of identification data on the tool
The type designation and serial number can be found on
the type identification plate on the tool. Make a note of
this data in your operating instructions and always refer
to it when making an enquiry to your Hilti representative
or service department.
Type:
Generation: 01
Serial no.:
en
13