Labconco Spectrum 177050100 User Manual page 25

Step 5
Organize all wires and harnesses within the J-box and reinstall the J-box cover and
weather cover previously removed.
AC Select Switch (For 100-125 VAC 1 HP ECM Only)
The 1 HP ECM Spectrum Blower is factory default rated at 208-250 VAC. If connecting
to 100-125 VAC, the AC select switch needs be adjusted. If connecting to 208-250 VAC
single-phase power, the AC select switch should not be adjusted.
Failure to match AC power to blower with this switch can cause damage to the
motor. Do NOT adjust switch until you have confirmed AC power to the blower.
To locate the switch, remove either the access panel (reference Figure 6-1) or the
weather cover. To prevent accidental change of the switch position it is covered with a
bracket. Use the instructions on the switch panel as shown in Figure 4-8 to select the
correct voltage.
When the blower wiring has been completed, check for proper motor rotation.
When in operation, the impeller should rotate counterclockwise when viewed
from the blower inlet (Reference Figure 4-8).
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Figure 4-8