Labconco Spectrum 177050100 User Manual page 24

Step 3
Locate the harness marked with the "MAIN POWER" label inside the junction box.
For 1 HP installations, see Figure 4-6 for a diagram illustrating how to connect the
blower to power.
For 2 HP installations, single or three phase power must be determined
The 2HP VFD Motor Spectrum Blowers operates on either single or three phase
power. To properly connect the blower to power, identify which phase power is
available at the installation site and properly wire it based on the procedure
below.
Incorrectly identifying and wiring the Blower can result in damage and/or
inefficiency. Please ensure appropriate steps are taken to prevent mistakes.
Follow Figure 4-7 for a diagram illustrating how to connect the 2 HP blower to power.
Step 4
If desired, a surge protector can be installed in the service line prior to the power wiring
shown in Figures 4-6 & 4-7.
Any penetration of the building roof by electrical wiring/conduit must be sealed
appropriately.
3-G/Y
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Figure 4-6
Figure 4-7