The Solenoids are 24v solenoids, they require that to work so there is no damage being done. Also, the 24v is going into COM4 on the relay, not the arduino.
I appreciate the input Jimmy but it's not the project guidance that I have an issue with. The circuit works, it is up and running.
As was my original query, the problem is the sketch code required to switch off the relay after 5 seconds when the switch has been pressed. I realise I have my logic wrong but can't seem to figure it out. The delay function is also ineffective.
Regards.