577C--C, 577C--E, 577C--F: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
(such as a normal house overhang) is 48-in. (1219 mm) above the unit
top. The maximum horizontal extension of a partial overhang must not
exceed 48-in. (1219 mm).
Do not place the unit where water, ice, or snow from an overhang or roof
will damage or flood the unit. Do not install the unit on carpeting or
other combustible materials. Slab-mounted units should be at least 2 in.
(51 mm) above the highest expected water and runoff levels. Do not use
unit if it has been under water.
Step 5 – Rig and Place Unit
Rigging and handling of this equipment can be hazardous for many
reasons due to the installation location (roofs, elevated structures, etc.).
Only trained, qualified crane operators and ground support staff should
handle and install this equipment.
When working with this equipment, observe precautions in the literature,
on tags, stickers, and labels attached to the equipment, and any other
safety precautions that might apply.
Training for operators of the lifting equipment should include, but not be
limited to, the following:
1. Application of the lifter to the load, and adjustment of the lifts to
adapt to various sizes or kinds of loads.
2. Instruction in any special operation or precaution.
3. Condition of the load as it relates to operation of the lifting kit, such
as balance, temperature, etc.
Follow all applicable safety codes. Wear safety shoes and work gloves.
Inspection
Prior to initial use, and at monthly intervals, all rigging shackles, clevis
pins, and straps should be visually inspected for any damage, evidence
of wear, structural deformation, or cracks. Particular attention should be
paid to excessive wear at hoist hooking points and load support areas.
Materials showing any kind of wear in these areas must not be used and
should be discarded.
Rigging/Lifting of Unit (See
)
Lifting holes are provided in base rails as shown in
1. Leave top shipping skid on the unit for use as a spreader bar to
prevent the rigging straps from damaging the unit. If the skid is not
available, use a spreader bar of sufficient length to protect the unit
from damage.
2. Attach shackles, clevis pins, and straps to the base rails of the unit.
Be sure materials are rated to hold the weight of the unit (See
).
3. Attach a clevis of sufficient strength in the middle of the straps.
Adjust the clevis location to ensure unit is lifted level with the
ground.
After the unit is placed on the roof curb or mounting pad, remove the top
skid.
WARNING
!
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal injury/death or
property damage.
When straps are taut, the clevis should be a minimum of 36 in. (914
mm) above the unit top cover.
WARNING
!
UNIT FALLING HAZARD
Failure to follow this warning could result in personal injury or death.
Never stand beneath rigged units or lift over people.
WARNING
!
UNIT FALLING HAZARD
Failure to follow this warning could result in personal injury or death.
Large base units must be secured to common curb before allowing full
weight of unit to rest on curb. Install screws through curb into unit base
rails while rigging crane is still supporting unit.
