Technical Info

Fresh Water Calibration

Fill the tank then run approximately two or three bowls of water off using the tap. This is to ensure that no water is left in the filler pipe as this will cause a false ‘full reading’. Although the main scale of the gauge is heavily damped, causing it to only move slowly, the calibration dot is almost instantaneous in function making adjustment easier.

If the dot is showing turn the ‘Adjust full’ control slowly anti-clockwise until it goes out then slowly clockwise until it just shows. If the dot is not showing turn the ‘Adjust full’ control slowly clockwise until the dot just shows.

Please note that with the inline unit the gauge will read zero when the tap runs, but will quickly return to the correct reading when the pump stops.