It looks like the scale of the model is off. Vizard's unit of measurement is the meter and the modeling software probably uses something else. If you look in Inspector, the bounding box of the model is around 5000 x 300 x 5000 meters. Try scaling the model down in Vizard:
Code:
import viz
viz.go()
sample = viz.addChild('sample.ive')
sample.setScale([0.001]*3)
import vizcam
vizcam.PivotNavigate(distance=10)