Hotpoint Condensing T/D TCM570

I visited this condensing dryer this morning with the description of water leaking on the sides. Found the drainage channels were blocked, cleaned it out and removed the scum. Some puddles of water near the impellers and I tipped it on the side to drain it out. This was done in a garage not the kitchen!

Cleaned the scum out as much as I could without dismantling the whole machine apart. The pump works, heater works, drum rotation works. Everything working as you would find except that this dryer gave an insulation reading of a big fat zero.

First I thought my tester was faulty, I checked it out and proved that the tester is working correctly. I advised the client not to use the dryer until I figure out what is the cause of the low insulation. I said I would return to test it again in few days (I was hoping that it would have dried up by then)

The client says that it has been tripping electrics when the water was leaking on the side (this was caused by a blockage to the drain pump chamber). So i am wondering if the electrics got damp somewhere. Would it be likely the heater unit and stats? Or just simply damp and in need of drying out?