Installation
26 AFDH-SVN03H-EN
Mechanical Installation of a Unit
Mounted D-Frame AFDH (For
LiquiFlo Drive Replacement)
1. Use a saw-zaw to remove the right tab (when facing the
back of the AFDH panel). The left tab will be used to
mount the drive to the brackets and must not be
removed.
2. Inspect the Z-bracket on the chiller motor flange. If the
Z-bracket is equipped with weldment nuts, these nuts
must either be ground off or drilled out to allow the
3/8-inch studs on the back of the new drive cabinet
assembly
to slide into the bracket at these locations.
3. Prepare lifting equipment and rigging.
a. Depending upon the model type, a unit-mounted
AFDH can weigh up to 1400 pounds. Confirm the
weight of the AFDH unit to be installed. For D-Frame
units refer to Table 5, p. 18.
b. Verify that the intended lifting device and rigging
has the capacity to safely handle the load before
hooking up to the two factory provided lifting points
on top of the cabinet assembly.
c. Use the appropriate rigging techniques to ensure
that the cabinet assembly will be balanced about its
center of gravity during lifting. Refer to
“Recommended Rigging and Lifting Procedures for
AFDH Drive Units,” p. 15.
WARNING
Heavy Objects!
Failure to follow instructions below or properly lift unit
could result in unit dropping and possibly crushing
operator/technician which could result in death or
serious injury, and equipment or property-only damage.
Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles used to
lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings) may
not be of the same length. Adjust as necessary for even
unit lift.
WARNING
Improper Unit Lift!
Failure to properly lift unit could result in unit dropping
and possibly crushing operator/technician which could
result in death or serious injury, and equipment or
property-only damage. An AFDH cabinet assembly is
top heavy. Test lift unit approximately 24 inches to
verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is not
level.
NOTICE:
Improper Unit Lowering!
Do not drop the drive cabinet assembly onto the
evaporator mounting brackets when setting it into
position! Dropping the cabinet onto the brackets could
result in damage to the drive cabinet, the brackets,
and/or the evaporator shell.
Figure 15. Removing the right tab
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