AGL GradeLight 3000, Руководство пользователя

Страница: 22 / 40

21
Alignment Methods
After the laser is set up at the correct
elevation and the correct grade is entered,
the last step is to align the beam to the
forward manhole using one of these
methods.
1. Manhole Mount with Transit
2. Special Transit and Rod Group
3. Stringline
4. Plumb Bob
Manhole Transit Method
This method can be used with the Special
transit or any standard transit (ideally on that
has a back-sight – flop – capability). Use the
Manhole transit Clamp system to support the
transit. The laser is set up in the manhole
using leg sets, or the trivet.
1. Secure the Clamp Body and Mast
(Figure c). Position the clamp (1)
over the top edge of the manhole so
the mast (2) is plumb enough to easily
level the transit when mounted.
Tighten the clamp screw (3), until the
clamp points are firmly embedded in
the sides of the manhole. The mast
can be further adjusted to plumb
using the lever (4) locking the mast
pivot.
2. Secure the Arm – Slide the arm clamp
support (5) and the arm clamp (6)
over the mast and secure. Insert the
arm (7) into the clamp. The clamp
allows complete flexibility to raise,
extend, and position the arm so the
transit mount (8) is over the manhole center. The transit mount is a 5/8-11 male
attachment for mounting a standard transit. The AGL Special transit is mounted using
an adaptor assembly.
Aligning the beam with the AGL Special Transit
1. Mount the Special transit and adapter to the mount at the end of the arm. Adjust the
arm so the transit is roughly over pipe centerline and in line with the laser (Figure D).
Adjust the vertical crosshair exactly to the forward manhole marker using the forward
marker knob.
2. Align Transit to Laser – Tilt the transit down and sight the line pivot LED. On the
transit, use the laser centerline knob to adjust the vertical crosshair until aligned