Needing help in the Northwest, Blackpool area.

Anyhows. Bought a damp house and investigating and planning restoration, some of it can't be done till spring/summer next year.
Needing a dehumidifier, long term. Didn't want the long cost of hiring so I bought one at auction.

That's right, it doesn't dehumidify! Bugger. So I want to fix it.

It's an ex-hire Calorex Porta-Dry PD300AJX. Specs are great as it'll operate at low temps (below 20 degrees).
Stripped the outer casing off and can't see anything that looks like damage, The fan works and the compressor runs.
I've got a vacuum pump, so thinking I'll test for leaks before doing anything else.
This area is completely new to me and I'm hoping I can find some help. There are no valves on the pipework, which would need to be added. Thankfully my soldering/brazing is good enough for gas so should be able to deal with that.


Does anyone have anything to input or am I just another crazy person?

The refridgerant type is R407o