Description; Features/Functions - Hilti PR 25 Operating Instructions Manual

2. Description

2.1 PR 25 rotating laser
The PR 25 is a rotating laser featuring a visible rotating
laser beam plus a line laser beam set at 90° to the rotat-
en
ing beam, which can be used to indicate the vertical,
horizontal or inclined planes.
2.2 Features
The tool allows a single person to level or align in any
plane quickly and with great accuracy.
Automatic leveling (within ±5° inclination): The tool lev-
els itself automatically after switching on. The laser beam
is emitted only when the specified accuracy has been
achieved.
LEDs indicate the tool's operating status.
Speed of rotation
The tool features 4 speeds of rotation. These are: sta-
tionary spot (zero rotation), slow rotation, medium-
speed rotation and fast rotation.
It is possible to switch between functions such as "Rotat-
ing laser" and "Line laser". This can be done from the
PR25 rotating laser or by way of the PRA 25 (combined
laser detector and remote control unit).
Shock warning
The built-in shock warning function becomes active one
minute after switching on: The tool switches to warning
mode (all LEDs blink, laser stops rotating) when brought
out of level as a result of vibration or an impact during
operation. All LEDs blink and the laser stops rotating.
Automatic cut-out
If movement of the mechanism is physically impeded
or the tool is set up outside its self-leveling range, the
laser remains switched off and all LEDs blink.
The tool can be set up on a tripod with a
stood directly on some other steady surface (free of
vibration).
-NOTE-
In some versions sold, the PRA 25 is not supplied as
standard with the PR 25. In this case, the functions can
be controlled directly from the PR 25 rotating laser itself
(excluding auto alignment/monitoring, which is possi-
ble only in conjunction with the PRA 25).
2
2.3 Description of functions
2.3.1 Horizontal plane (automatic leveling)
When switched on, the tool levels itself automatically by
way of the 2 built-in servo motors for the X- and Y-direc-
tions.
2.3.2 Inclined plane (any desired inclination)
Inclination can be set up in alignment with given marks
by pressing the X- and Y-keys on the PRA 25 or PR 25.
2.3.3 Automatic cut-out
During automatic leveling in one or both directions, the
servo system monitors compliance with the specified
accuracy.
The tool switches itself off in the following situations:
– Leveling is not accomplished (tool set up outside
its leveling range or the mechanism is physically
impeded).
– The tool is brought out of level (due to vibration or im-
pact).
After automatic cut-out, rotation of the laser beam stops
and all LEDs blink.
Items supplied
1 PR 25 rotating laser
1 PRA 25 laser detector*
1 PR 25 operating instructions
1 PRA 25 operating instructions*
1 PR 25/PRA 25 operating instructions*
1 PRA 50/1 target plate
1 manufacturer's certificate
3 batteries (size D cells)
2 batteries (size AA cells)
1 Hilti toolbox
" thread or
5
/
8
* Depending on the version purchased, this may not be
included in the items supplied.