It’s a super easy pressurised manual pump system to operate.
1. Pull out the Pressure Release Valve to release any pressure that may be in the tank
2. Unscrew the pump handle in an anticlockwise direction to open
3. Fill the tank with water to near full capacity, just over 3/4's full
4. Screw the pump handle in a clockwise direction to close
5. Pump until desired pressurised is reached
6. Shower away on your selected showerhead mode
7. Once finished, release any residual pressure inside by using the Pressure Relief Valve in order to open