MT5 Multi-Tracer Operating Manual
page 76
Raydec recommends examining these filters at least monthly to ensure that they are
free of restrictions. If these filters become plugged, the MT5 Load Unit will not be able to
cool properly. The load unit will likely overheat and turn off the module loads. Even if the
loads do not overheat to the point of shutdown, they will operate at an elevated
temperature which will reduce the functional life of the equipment.
Figure 40. Load unit fan intake air filter and guard.
In addition to keeping the fan intake filters clean, the heat sink itself may require
periodic cleaning. Raydec recommends examining the heat sink assembly at least once
per year and cleaning if necessary. To clean the unit, unplug all connections and
remove the unit from service. Set the unit on its back side (air exhaust side) and remove
the bottom cover as shown below in Figure 41.
With the MT5 load oriented as shown, use a soft brush or compressed air to remove
any dirt, dust or other debris in the heat sink. Air often contains grease and this will build
up on the heat sink fins. In this case apply a degreasing solvent appropriate for
electronic equipment. When oriented as shown below, the solvent should only come in
contact with the heat sink fins and enclosure panels and represents low risk to internal
components.
