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Valley ClassicPlus Control Panel
Operation
Percent Timer
Theory of Operation
The percent timer controls the length of time that the
last regular drive unit runs. Example: if a 60 second
percent timer is set to 50%, during the 60 second
cycle the last regular drive unit will run for 30 seconds
and then stop for 30 seconds before starting the next
cycle. Percent timers are available with 30, 60 90 or
120 second cycles.
Identifying Percent Timers
There are three solid state electronic percent timers.
Response to Change
Eagle Solid State Percent Timer Operation
• Machine Stopped: When a change is made to the
Eagle solid state percent timer setting while the
machine is stopped, the timer will finish the pre-
vious time cycle before starting the new percent
timer setting when the machine is started.
• Machine Running: When a change is made to
the Eagle solid state percent timer setting dur-
ing operation, the change is not immediately
recognized by the percent timer. First the percent
timer completes the current cycle at the previous
setting, then after the cycle ends the change is
recognized and the percent timer begins working
at the new setting.
ATC and Macromatic Solid State Percent Timer
Operation
• Machine Stopped: When a change is made to
the percent timer setting while the machine is
stopped, the change is recognized immediately
and when the machine is started the machine
runs at the new percent timer setting.
• Machine Running: When a change is made to the
percent timer setting during operation, the change
is recognized immediately and the timer begins
working on the new setting.
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Figure 30-1 1. Eagle Solid State Percent Timer
2. Dial
3. Indicator Light
4. Manufacturers Logo
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Figure 30-2 1. ATC Percent Time Shown
2. Dial
3. Indicator Light
4. Manufacturers Logo
