REV0303MTCX010320
Phase 1
AXI recommends 3 phases to successfully polish a fuel tank. This will ensure all contaminates are removed and the fuel is
in optimal condition.
The goal of Phase One is to remove any free water and sludge from the bottom of the tank without mixing the water into
an emulsified state within the fuel. The Pump will start pumping as long as the system is primed (See Priming the System
section) and the suction lift is not excessive. The flow of the fuel can be observed in the see-through suction hose.
1. Setup up the system in Bypass Mode (see Setup Procedures – Bypass Mode).
2. Place the Discharge Hose into a separate discharge waste container.
3. To remove as much of the free water and sludge as possible, the Suction Hose (with a straight wand or pipe
attachment) should be placed at the deepest part of the tank.
4. Before starting the pump, ensure the Inlet Ball Valve is in the open position, the Accessory Selector Valve
(located on the base below the Primary Filter) is in the “OFF” position, and Primary Filter is equipped with a filter
bag (see Maintenance – Servicing the Primary Filter).
5. Turn on the Pump and be prepared to immediately switch it off once the fluid begins to fill the discharge container.
6. Inspect the discharged fluid before resuming the filtration process.
7. While pumping, regularly check the Water Level Sight Glass on front of Primary Filter to see any water buildup.
Switch off the Pump and drain the Primary Filter as often as needed using the drain valve.
Note: It may be necessary to depress the air purge valve on top of the Primary Filter after opening the drain valve.
8. Also, monitor the Vacuum Gauges on the Primary Filter vessel. The lower Vacuum Gauge will display when the
Primary Filter bag must be serviced (see Maintenance – Servicing the Primary Filter).
9. Continue pumping until the bulk water and sludge have been removed from the tank bottom and only fuel is
primarily discharged from the return hose.
10. Switch off the Pump and drain all water and debris from the hose and the Primary Filter (via the drain valve) into
an appropriate waste bucket or container.
Phase 2
The goal of Phase Two is to remove any additional free water, sludge, and large contaminants within the tank. This phase
will further clean the fuel and should be a precursor to using the more expensive spin-on filters. It should be noted that
meeting required cleanliness codes is typically not possible with Phase One and Two alone. Phase Two is simply used to
extend the life of the spin-on filters by remove the worst of the contaminants first.
1. Before turning on the Pump, ensure the system is still setup in Bypass Mode (see the Setup Procedures – Bypass
Mode).
2. Remove the Discharge Hose from the waste container and place it into the tank.
3. If possible, ensure the Suction and Discharge Hoses are placed as far apart as possible but note that in many
cases both hoses may have to be inserted through the same tank opening.
4. After verifying that both hoses are properly placed in the fuel tank, the ball valves on the system are in the correct
position, and the Accessory Selector Switch is in the “OFF” position, switch on the pump and watch the clear
suction hose for fuel flow.
5. While pumping, regularly check the Water Level Sight Glass on front of Primary Filter to see any water buildup.
Switch off the Pump and drain the Primary Filter as often as needed using the drain valve.
6. Also, monitor the Vacuum Gauges on the Primary Filter vessel. The lower Vacuum Gauge will display when the
Primary filter bag must be serviced (see Maintenance – Servicing the Primary Filter).
7. Run several cycles of the entire tank volume, continuously reducing the micron rating of the Primary Filter’s filter
bags. This will remove the majority of large contaminants from your fuel.
8. Once clean samples can be drawn from the Primary Filter vessel (via the drain valve), switch off the pump to
prepare for the final polishing phase.
