Measurement Computing WavePort rev.3.0 - Manual (Page 50)

4-22 Hardware and Operation Reference 09-29-00 WavePort User’s Manual
WavePort’s Fan
WavePort components are air-cooled and cooling to ambient occurs as long as the
surrounding environment is cooler than the unit. When the unit becomes too warm
for ambient cooling, a temperature sensor signals the fan to run.
The fan’s speed varies, depending on WavePort’s internal temperature. In cooler
environments the fan operates at lower speeds, thus reducing audible noise.
Typically, if the modules are powered on, or if the batteries are charging, the fan
will run.
Note that long term trickle charging is accomplished without the use of the fan.
To maintain sufficient cooling, it is important to keep the fan and vents free of
obstruction.
If the CHECK FAN indicator LED comes on you should:
1) Check WavePort’s cover plate. If the plate feels hot, turn the Module Power
Switch to OFF.
2) Verify that the fan is running. If not, proceed to step 6.
3) Verify that the fan and the casing vents are not obstructed.
4) Remove obstructions to the fan and vent, if applicable.
5) If the fan’s filter appears dirty or clogged, replace it as described in Chapter 9.
6) If there appears to be a problem with overheating or with the fan, contact your
service representative.