Manual

Maintenance
13
Maintenance
+ NOTE: Figure 5 on page 12 shows the location of components
which may be referred to in this section.
Cleaning The outside surface of the unit should be wiped free of dust and dirt
when necessary. Excessive dust on the cooling fins will interfere with
heat dissipation. Clean the RF connector, both metallic and
insulating surfaces, with a dry, non-residue forming solvent.
Radiator: To clean the radiator fins, partial disassembly of the load
will be required. Follow the instructions below:
1. Unscrew the unpainted 10-32 x
1
⁄
4
" Phillips head screws on the
front and rear radiator faces, just below the RF connector.
2. Unscrew all four pairs of 10-32 x
5
⁄
8
" Phillips head screws on the
sides of the radiator, just above the fan grill.
3. Remove the side panels and clean the fins.
4. Replace the side panels and screw into place.
Fans: Follow these steps to clean the fans:
1. Pull the fan grill out so that its upper flanges come free from the
housing.
2. Pull the grill down and remove it.
3. Use a soft, damp cloth to remove dust from both sides of the fan
blades. Do not use a cleaning solution that will attack the plastic
parts of the fan.
4. Replace the fan grill.
Inspection Inspect the unit every six months. Check for coolant leakage around
the clamping band and the thermoswitch. Also check for corrosion.
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.
WARNING
Do not operate with side panel removed. Doing so could result in
personal injury.