Solution Hose & Pump Priming - Nautilus MX3-500 Operating Manual

3. Connection of Solution Hose:
Connect the high pressure solution hose to the solution outlet (female quick connect on the front of the
machine). Connect the other end of the hose to the male quick connect on the cleaning tool. When you are
ready to start cleaning, turn the solution pump switch to the ON position
HP Solution Hose Assembly – AH79D
1/4" id X 25' with M-F Quick Connects
4. Priming the High-Pressure Pump:
Before priming the pump, make sure your solution hose and tool are connected to the machine.
Once water is in the solution tank, the high pressure pump must be primed:
• There is a prime valve located on the lower back portion of the machine.
• Turn on both vacuums and the solution pump. Press the priming lever for a few seconds while you
block off the vacuum inlet with your hand. The vacuum will pull solution through the pump and
prime valve into the vacuum tank.
• Let off the prime valve and your pump is primed. As long as there is solution in the tank the pump
should remain primed. You can now proceed with cleaning or turn the pump off and continue your
set-up.
If the pump still does not prime, or if flow is low or unsteady, check the hose from the solution tank to the
pump (as well as the filter) for clogging, kinks, or restrictions. Clean or replace hose and/or filter and repeat
the priming procedure.
If you are having trouble with the pump, refer to the trouble shooting guide or contact your distributor for
advice or assistance.
PUMP PRIMING VALVE
Connect the male end of the HP Solution Hose
Assembly to the female solution outlet fitting on
the machine. Connect the female end to the
cleaning tool.
PRESSING THE PUMP PRIMING VALVE
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