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6. Loosen and remove the bolts that secure the
refrigerant line flanges to the drive flanges. Take care
not to misplace any orifice plates that may be installed
on the refrigerant inlet.
Important:
Any unit pressure must be relieved before
disconnecting refrigerant lines. The units
ship from the factory with a 5 psi (34.5 kPa)
dry nitrogen holding charge.
Lifting the Drive
WARNING
Heavy Objects!
Failure to properly lift unit could result in death or
serious injury. Do not use cables (chains or slings)
except as shown. Each of the cables (chains or slings)
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. Other lifting arrangements
may cause equipment or property-only damage.
WARNING
Improper Unit Lift!
Failure to properly lift unit could result in death or
serious injury or possible equipment or property-only
damage. Test lift unit approximately 24 inches (61 cm)
to verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is not
level.
7. Use an overhead or portable hoist (minimum 2-ton
[907 kg] rated capacity) and connect it to the enclosure
using slings or chains. Rig in a manner that will
equalize the load at the pickup points. Use a spreader
bar if the angle of the sling or chains is less than 45°
relative to the horizontal. Take up the vertical slack. A
fork lift truck or similar means of lifting or transporting
the drive may also be used if care is taken. See
Figure
12.
8. Loosen and remove the bolts that secure the drive
enclosure to the motor terminal transition piece or
terminal board.
9. Loosen and remove the bolts that secure the drive
enclosure to the lower mounting brackets.
10. Carefully lift the drive away. Do not bump or jolt the
drive while lifting.
11. Store the drive in a clean and dry location with ample
air circulation and heat to prevent condensation from
occurring. Always protect the drive from dirt and
moisture. If it is necessary to cut and remove the
mounting brackets below the drive, it is recommended
that alignment or "fish" plates be field constructed to
assure the brackets are properly re-aligned when they
are reinstalled.
AFDE-SVU02F-EN
Re-assembly of the drive is essentially the reverse of the
above procedure. The drive enclosure to mounting bracket
bolts should be torqued to 90 ft·lb (122 N·m). The drive
enclosure to motor terminal transition piece or terminal
board should be torqued to 21 ft·lb (28.5 N·m).
WARNING
Improper Unit Lift!
Failure to properly lift unit could result in death or
serious injury or possible equipment or property-only
damage. Test lift unit approximately 24 in. (61 cm) to
verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is not
level.
Drive and Cabinet
29
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