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Instruction Manual
IM-105-4000, Rev 1.3
October 2008
WEATHER
COVER/BLOWER
PREVENTIVE
MAINTENANCE
Cleaning - Accumulations of dirt and dust on components act as an insulating
blanket preventing efficient heat dissipation. Dust on circuit boards and wires
can cause arcing and short circuits resulting in damage to components or
even instrument failure. Clean your instrument with clean high-pressure air
before this happens.
The control unit chassis provides protection from dust and dirt and should be
in place during normal operation of the instrument.
Exterior - Dust the chassis with a soft cloth. Dust the front panel with a soft
paintbrush. Dirt clinging to the surface can be removed with a soft cloth
dampened with a mild detergent and water solution. Avoid using abrasive
cleaners, as they will scratch the housing and front panel.
Interior - Dust in the interior of the control unit should be removed before it
builds up enough to cause arcing and short circuits during periods of high
humidity. Dust is best removed from the interior by the type of canned air used
for computer cleaning. Dirt clinging to the surfaces can be removed with a soft
paintbrush.
Visual Inspection - Inspect the interior occasionally for broken connections,
improperly seated semiconductors, damaged or improperly installed circuit
boards, heat damaged components, etc. If heat damaged components are
found, care must be taken to find the cause of the excessive heat and
measures must be taken to prevent recurrence of the damage.
Semiconductor Checks - Periodic checks of the semiconductor devices in
this instrument are not recommended. The best check of semiconductor
performance is actual operation of the instrument.
Periodically - Check and inspect all hoses and wire connections inside the
weather covers.
OPM 4000
7-3
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