Trane CGAM Installation & Operation Manual page 42

Installation - Mechanical
Lifting using either a single spreader bar or an H-type spreader is acceptable. Attach chains or
cables to lifting beam. Lifting beam crossbars MUST be positioned so lifting cables do not contact
the sides of the unit.
Important: The center of gravity (CG) is never at the midpoint of the base rail lifting strap holes.
Lifting a unit with equal length straps will NOT produce a level unit during the lift because the CG
will not be at the midpoint between the base lifting holes. The following adjustments must be made
to produce a level lift:
•
•
Figure 36. H-type spreader bar adjustment for level unit lift
42
A level unit lift is required for a safe lift and to prevent unit damage.
Single spreader bar lifting method
• If the unit CG is closer to the control panel, the straps on the control panel side of the
spreader bar must be adjusted to be shorter than those on the opposite side of the spreader
bar, allowing the spreader bar to move toward the control panel and over the unit CG.
Several adjustments of the strap length may be required to produce a level unit during lift.
H-type spreader bar lifting method
• If the straps from the H bar to the unit base are the same length, the crane lifting point on
the center web of the H bar must be adjusted to produce a level unit lift. See
for illustration.
Crane lift point
Crane lift point must move to
the unit CG to produce a level
unit lift
"H" type spreader bar
Lifting Straps to unit base
Figure 36, p. 42
CG-SVX17D-EN