Left: dashed contours (from 10σ, 0.23 Jy/beam, in step of 10σ) are the 1.4 mm continuum emission observed with the SMA. The solid blue and red contours are the SO(5₆ − 4₅) blue- and red-shifted emission from Paper I (blue: from 80 to 104 Jy beam^-1 in steps of 10 Jy beam^-1; red: 10 and 12 Jy beam^-1). Right: integrated emission of the SiO(5−4) line: the dashed blue and red contours are the LV blue- and red-shifted SiO emission (ν_bl =  [− 20, − 10] km s^-1, from 5σ (2.5 Jy/beam) in step of 10σ; ν_rd =  [+ 10, + 39] km s^-1, from 5σ (4 Jy/beam) in step of 10σ), the thick contour the HV red-shifted emission (ν_rd =  [+ 50, + 70] km s^-1, 4σ (2.4 Jy/beam)). The red dotted contour is the EHV CO(2–1) red-shifted emission (see Fig. 3 of Paper I). The black squares mark the peak positions of the EHV CO(2–1) (R1) red-shifted emission, of the SiO(5−4) LV (SiO-LV) and HV red-shifted emission (SiO-HV) , and of the H₂ emission in OF1 (H₂-OF1). In both panels, the grey scale and the solid black contours represent the H₂ emission at 2.12 μm. The black crosses mark the positions of the VLA-2a,-2b,-2c and -2d 1.3 cm continuum sources (Zapata et al. 2008); the arrow marks the OF1 outflow. The blue and red triangles mark the peaks of the blue- and red-shifted SO(5₆ − 4₅) emission.