head usage
Failure of the head is very uncomfortable, both for the crew who want to use it and for the person kind enough to try and fix it. Not to mention the uncomfortable smell that usually accompanies blockage of the drainage system.
Therefore;
Nothing goes down the toilet that hasn’t gone through your digestive system.
Use the pump with care; push slowly and carefully if you feel resistance.
After usage make sure the inlet valve is shut (black valve points forward as in the picture) and handle is not locked (as in the picture).