Axi MTC HC-50 Installation, Operating And Maintenance Manual Download Page 8

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OMMISSIONING

MAINTENANCE

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System Operation

Operating Procedure

Hoses:

The intake/suction hose is a clear, see-through reinforced vacuum hose. The return hose is black or blue/black, non-

marking, high quality, discharge fuel hose. Both hoses are equipped with quick disconnects or Cam & Groove couplings.

1. Attach quick disconnect end of clear suction hose to the quick disconnect Inlet Port of the MTC.
2. We highly recommend attaching a straight wand or pipe (cut at an angle at the end that goes into the tank and is at

minimum the same inner diameter as the suction hose) to the suction hose to reach the lowest part of the tank bottom.

3. Attach quick disconnect end of blue/black discharge hose to quick disconnect Discharge Port 1 of MTC.
4.

Place the end of the discharge hose in an appropriate-size container (Phase One only). Try to not agitate the fuel in the
tank and stir up and disperse water and sediment throughout the fuel –this will make it more difficult to remove later on.

For Phases Two and Three, place the end of the discharge hose back in the tank as far away as possible from the

suction hose. Ensure that the hose is secured and will not vibrate out of the container when the system is operating.

6. Verify that both drain valves are closed and the system is set up in a stable and safe position.

Note: Never restrict the flow on the suction side of an MTC; e.g. by using a smaller ID hose or pipe or attaching the suction
hose to a fitting on the tank that has a smaller ID than the hose. This will lead to excessive pump load, noise and ultimately

damage the pump.

Phase 1:

AXI recommends 3 phases to successfully polish a fuel tank. This will ensure all water is removed from the fuel, particulate
is removed, and the fuel is in an optimal condition. The goal of Phase One is to remove any free water and sludge on the
bottom of the tank without mixing the water into an emulsified state within the fuel.

Start the pump motor and be ready to

immediately stop it. The vane pump will start pumping as long as the system is primed and the suction lift is not excessive.

The flow of fuel can be observed in the see-through suction hose. Watch for a steady flow of fuel into the container.

1. Connect a “snorkel” to the tank end of the suction hose. The snorkel is obtained locally and fashioned according to the

requirements of the particular job. In general, the snorkel is a piece of PVC pipe cut at an angle to facilitate removal of
water and contaminants, when the “snorkel” is inserted into the fuel tank.

Note: Avoid restricting the flow on the suction side of the system. If it is necessary to use a smaller ID suction hose, a smaller
ID “snorkel”, or if the length of the suction hose is increased, reduce the flow rate so that the vacuum gauge remains in the

green color band.

2. Connect the Suction hose to the Inlet Port.

Note: If your system is equipped with the optional flow meter please make sure to use at least a 400 micron filtration

upstream of the Digital Flow Meter in order to protect the Digital Flow Meter.

3. Connect the Discharge Hose to the Discharge Port 1.
4. Check all connections for integrity.