MCS XL 9ERM Manuel D'utilisation Et De Maintenance page 32

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12. Connect the heater to the electrical power.
13. Verify if a spark strikes between the electrodes. If the earthing connection is done properly, and if there
is no spark between the electrodes, the transformer is defective. NOTE: Pay attention because the fact
that there is no spark between the electrodes may also be a result of the porcelain of the electrodes
being broken. Before replacing the transformer therefore, verify the total integrity of the electrodes and,
only after making sure that there are no cracks in the electrode porcelain, replace the transformer.
D. Leak in the pump's suction circuit.
1. Check the entire suction circuit and verify that there are no leaks (Fig. 26). Each leak in this tract of the
circuit causes air to enter the suction circuit which works at a pressure that is less than the
atmospheric. If this takes place, there may be pressure problems in the pump.
Figure 26 - Potential leakage points in the suction circuit.
1. Seal fitting between the tank and the diesel oil supply pipe, 2. Inlet fitting in the line filter, 3. Outlet fitting
from the line filter, 4. Suction fitting of the fuel pump, 5. Diesel oil discharge pipe.
Figure 25 - Earthing connection of the electrodes.
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