How do I prime just the flush valve?
A short article on how to prime just the flush valve on your Nexus system
From the main screen press the Prime Button on the keypad to select the Pump Prime screen. From the Pump Prime menu, press the TEST button to select to the Flush Valve menu.
To select the pump you want to prime, press the RIGHT arrow to enter the PUMP ONLY menu. You can then select the pump using the UP and DOWN arrows. When the correct pump is selected, PRESS AND HOLD the MIDDLE button on the keypad to prime.
– Pump only Prime Menu
– How do I prime just the pumps with a flush valve attached