The veteran hot-dogger said he didn't want the eagle-eyed spotter identified for fear of reprisals from the offenders. "It's the safest way to go."
Police accompanied the businessman to a property in Fernhill on Sunday where the machine was discovered and fingerprints were taken.
"Police are involved so I don't want to say any more about where exactly it was found. They [offenders] obviously tried pretty hard to hide it."
The well-known Flaxmere local bought his first catering caravan in 1954, and now has 30 caravans operating.
He said the machine was an essential tool for his catering company and was used "almost nightly" to fire up his caravans.
It would be back in use at a catering function in Napier this weekend.