14 45 00-7
present on each column. This safety device shall be totally independent
from the lifting drive system.
b.
Increments on lifting carriage locking profile shall not be greater than
1.375 inches (35 mm) and the first locking position shall engage after
no more than 5.0 inches (120 mm) of lifting.
c.
A locking “pawl and ratchet” system shall be used to ensure proper and
automatic locking at any height and at all times. The locking notches
shall be integrated into the lifting carriage. The locking pawl shall be
mounted to the inside of the column and function as a wedge between
the column and the lifting carriage. The locking pawl design shall utilize
gravity, with a spring assist, to ensure the locking pawl is always
engaged into the locking ladder. The mechanical safety lock shall be
automatically engaged at all times when the lift is not operating.
PART 3 EXECUTION
3.1
EXAMINATION
A.
Do not begin installation until substrates have been properly prepared.
B.
If substrate preparation is the responsibility of another installer, notify architect of
unsatisfactory preparation before proceeding.
3.2
PREPARATION
A.
Clean surfaces thoroughly prior to installation.
B.
Prepare surfaces using the methods recommended by the manufacturer for
achieving the best result for the substrate under the project conditions.
3.3
INSTALLATION
A.
Install in accordance with manufacturer's instructions. Test for proper operation, and
re-test if necessary until satisfactory results are obtained.
3.4
PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before substantial completion.
END OF SECTION