MCS XL 9ERM Manuel D'utilisation Et De Maintenance page 22

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Fan
Figure 13 - Burner fan.
The fan gets its movement directly from the motor shaft to which it is fixed through a sealing dowel. Its rotary
movement pushes air inside the body of the burner until it exits the burner sleeve, inside the combustion
chamber.
Be careful when carrying out maintenance operations that involve removing the fan. Sometimes, a hammer
or similar object is used to remove the fan but this often damages the fan's balance and its integrity. If, with
the machine running, the burner makes an unusual noise, replace the fan or verify that the fuel pump is
working correctly.
Front Baffle
Do not tighten the baffle's fastening screws without using a torque wrench.
Overtightening the screws, once the machine has performed a few operational
cycles, would prevent the baffle from being removed.
800 292-3279
Figure 14 - Front Baffle Tightening.
The purpose of the front baffle is to receive the heat coming from
inside the combustion chamber: through conduction (from the
walls of the combustion chamber and the flame) and by
convection (from the heat released by the flame). The baffle,
therefore, becomes a particular red colour since it receives all
this heat.
Due to normal principles of physics, heating a body results in an
increase in its volume. This same principle is true for the baffle.
Passing from a non-operational phase to a fully operational
phase, the baffle increases in volume, expanding from inside
towards the outside. This expansion, with the passing "ON/OFF"
operational cycles, causes the 8 screws locking the baffle to the
combustion chamber to loosen.
It is therefore important that the baffle's fastening screws are
tightened using a torque wrench and with a tightening torque of
approximately 2Nm.
ATTENTION!!!
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