Now to the PPV (positive pressure ventilation) fan, used for clearing buildings of smoke and fumes. This comes from the new turntable ladder and it wasn't until I had the parts in my hands that I realised that it appeared to be an electric powered fan and so I also needed the generator from the new turntable ladder appliance to have everything complete. (In fact, I hadn't ordered the cable although it's shown on the first photo showing the parts and part numbers, but I had one spare already.)
On the assumption that the fan was meant to be electric powered, I started to assemble it by slotting the cable into the spindle the rotor blade rotates on (photo 2) and then slipped the rotor blade on. Finally, I slotted the grille/rotor/cable assembly into the body of the fan, having earlier fitted the axle/wheel assembly to the body. Note the lug which sits in a corresponding slot in the base of the fan body.