Grass Valley 3400 CopperHead - Manual (Page 25)

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CopperHead 3400
User Guide
Area E – Fan Control Switch and Indicators
Fig. 3-7: Fan Control Switch
• 21 - Fan Control Switch: Push switch selects between four settings:
• AUTO – Fan Speed increases as unit temperature increases
• LOW – Fan Speed set to low speed
• HIGH – Fan Speed set to high speed
• OFF – Fan is turned off (all LED indicators are off when the fan is turned off )
• 22 - AUTO Indicator: Fan is operating in Auto mode and speed increases from ¼ speed
to full speed over a temperature range of 55 degrees centigrade to 70 degrees
centigrade.
• 23 - LOW Indicator: Fan is at ¼ full speed.
• 24 - HIGH Indicator: Fan is at full speed.
Fan Diagnostic Mode
The fan switch allows entry into a LED test mode. Push and hold the FAN switch for about
five seconds and the test will begin. At this point, all of the LEDs will blink indicating that
the fan system is functioning.
High Temperature Warning
If during regular operation (not the diagnostic mode described above) any of LEDs begin to
blink, then the CopperHead 3400 unit has reached a temperature of at least 70 degrees
centigrade. If this occurs, confirm that the fan is working correctly in the unit.
If this high temperature is sustained for any period of time, damage may occur to the
system. The unit should be turned off and allowed to cool before restarting and the unit
should be checked for malfunction as soon as possible.