Varifan MVS-1C User Manual page 7

The MVS-1C controller will make the fan modulate according to the Speed Selector
on the faceplate (refer to figure 3). It is also possible to adjust the Minimum Speed
with the potentiometer located inside the controller box on the electronic board (refer
to figure 2). That Minimum Speed will be the speed of the output when the Speed
Selector is set to MIN.
Here is a description of the MVS-1C operation.
- To turn on or off the variable output, use the Speed Selector located on the
faceplate (refer to figure 3)
Also, use the Speed Selector to increase or decrease the variable output speed.
-
When the Speed Selector is set to MIN, the Minimum Speed set by the
potentiometer inside the controller will be used (refer to figure 2).
Figure 4: Logic Diagrams
Output Speed
100%
Minimum
Speed
LO
Page 7
www.monitrol.com
10
Speed Selector
MVS-1C