  The interacting system Arp 284 consisting of the Wolf-Rayet galaxy NGC 7714
and its irregular companion NGC 7715 was observed using the Infrared Space
Observatory. Deconvolved ISOCAM maps of the galaxies using the 14.3, 7.7 and 15
micron LW3, LW6 and LW9 filters, along with ISOPHOT spectrometry of the nuclear
region of NGC 7714 were obtained and are presented. Strong ISOCAM emission was
detected from the central source in NGC 7714, along with strong PAH features,
the emission line [Ar II], molecular hydrogen at 9.66 microns and a blend of
features including [S IV] at 10.6 microns. IR emission was not detected from
the companion galaxy NGC 7715, the bridge linking the two galaxies or from the
partial stellar ring in NGC 7714 where emission ceases abruptly at the
interface between the disk and the ring.
  The morphology of the system can be well described by an off-centre collision
between the two galaxies. The LW3/LW2, where the LW2 flux was synthesized from
the PHOT-SL spectrum, LW9/LW6 and LW3/LW6 ratios suggest that the central burst
within NGC 7714 is moving towards the post-starburst phase, in agreement with
the age of the burst. Diagnostic tools including the ratio of the integrated
PAH luminosity to the 40 to 120 microns infrared luminosity and the
far-infrared colours reveal that despite the high surface brightness of the
nucleus, the properties of NGC 7714 can be explained in terms of a starburst
and do not require the prescence an AGN.
