Axi MTC-X, Instruction, Operating And Maintenance Manual

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17 REV0303MTCX010318
4. Open the inlet ball valve and start the system.
5.
Phase 3:
This phase is the most important phase in meeting specific cleanliness codes. Unlike the pre-filter bags, the spin-on filters
typically use absolute rated media. Absolute filters have a very high efficiency and will ensure that fuel leaving the system is
clean to specification and has a low water content. Like previously mentioned, pre-filtering should be performed to remove
any large particulate, water, and sludge. Pre-filtering will extend the life of the spin-on filters. The system is equipped with
two (2) spin-on filter heads. These can be used in different configurations to ensure the fuel is as clean and dry as possible
(see “ Filter Configurations ” section).
1. The MTC-X is designed with a single discharge port so that the system can be switched from Bypass Mode into Fine
Filtration Mode during system operation. Before changing over to Fine Filtration Mode , ensure that spin-on filters are
tightly sealed on to BOTH filter heads (one spin-on may be a void filter, see “ Filter Configurations ” section). Ensure
that the accessory selector valve is in the OFF position. Change the diverter valve from Bypass Mode (Position #1) to
Fine Filtration Mode (Position #2). The system is now diverting flow through the two in series spin-on filters and out
the discharge port (Port #2).
2. During Fine Filtration Mode monitor the pre-filter vacuum gauges, the water sight glass on the prefilter, and the two
differential gauges. The differential gauges will provide an indication of how clogged the spin-on filters are, and when
they should be serviced. A gauge in the red provides an indication that the filter should be serviced (Figure 4.1).
3. When a spin-on filter is clogged, check the water sight glass to ensure the pre-filter contains no water. Shut the system
down, close the inlet ball valve, and drain the water if it is visible.
4. Open the inlet ball valve, turn the system on and follow the procedures of “ Filter Drain ” section to perform the filter
draining.
5. When ready to inject AFC into the tank, follow the procedure in “ Additive Injection ” section.
Figure 4.1- Pre-filter vacuum gauges, and differential gauges
Run several volume cycles of the entire tank, continuously reducing the micron rating of the bag pre-filters. This will
remove the majority of large contaminants from your fuel. Keep an eye on the vacuum gauges on the pre-filter vessel.
The bottom vacuum gauge will display when the pre-filter bag must be serviced. The top gauge will give an indication
to the static head the system is currently experiencing, while the bottom gauge will provide an indication to the vacuum
the pump is experiencing. Also, watch the water level display sight. When water is observed in this sight, it is time to
drain the water. Shut the system down (close inlet ball valve) and drain the water until fuel is observed in the clear
drain hose.
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