Chapter 4 - Managing and Monitoring
Enclosure Fan Speed Control
114
A manual override of the fan speed control is available for special circumstance
environments. Referring to the illustration on the following page, two jumpers are
provided on the fan module printed circuit board to override the firmware
control of the fan speeds.
This hardware setting provides full voltage to the fans for maximum operational
speed, which is greater than the maximum speed set by the automatic software
control. This configuration is normally used when fan speed noises are not an
issue, and the ambient operating temperature is at or above 30°C (86°F), thus
ensuring that maximum available cooling is being provided.
Cooling Fan Module
The jumpers JP1 and JP2 are by default are offset which enables the use of the
automatic fan speed control. Placing the included jumper on both pins of each
jumper will override the automatic setting and set the fans to maximum power.
Jumpers JP1 and JP2
Fan Speed Overr ide Control
4200F.book Page 114 Thursday, January 23, 2003 2:47 PM
Summary of Contents for NexStor 4200F Series
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Page 8: ...Table of Contents iv 4200F book Page iv Thursday January 23 2003 2 47 PM...
Page 12: ...About this Manual Features viii 4200F book Page viii Thursday January 23 2003 2 47 PM...
Page 32: ...Chapter 1 Getting Started Audible Alarm 20 4200F book Page 20 Thursday January 23 2003 2 47 PM...
Page 172: ...Index 160 4200F book Page 160 Thursday January 23 2003 2 47 PM...
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