User Manual

AS4000 Survey Tool
605-0000-429
DLP-001
Issue 1.6. Date 1/9/99
Page 6 of 8
4. 3. Raising the mast
1. When raising the mast, ensure hard hats are worn and keep a careful watch on the CRU as it
is being raised, ensure that it will not knock any windows, or hit the roof. Beware of
overhead cables. The extending sections of the mast are greased and rubber gloves should be
worn when extending or manipulating sections of the mast.
2. Ensure that the air release screw is closed. See Figure 9.
3. Before raising the top section of the mast lock all sections by turning the section clamping
screws clockwise.
4. Using the hand pump raise the top section of the mast. When the section is fully extended
secure the section by tightening the section clamping screw.
5. Release the clamping screw on the next section of the mast. Raise the section using the hand
pump. Secure the section by tightening the section clamping screws and continue this process
until the CRU reaches the pre-determined height Use rules outlined in TAD-004. Secure all
clamping screws.
Drop Cable
and Tape
Measure
secured to
the mast
using a
Velcro tie
Figure 10. Mast Showing Two Sections Extended