6
Interval Cycle (SW3)
The interval cycle sets the time between each dose.
Determine the required interval and use the “Dose Interval
Adjustment” chart (Figure 8) to configure the SW3
dipswitch.
Pump Flow
Each peristaltic pump is equipped with a 3cc per revolu-
tion pump tube. The maximum flow with this tube at full
speed of 60RPM is 180 cc/minute (6 fluid ounces). This
rate is calculated based on pumping water with no back-
pressure. Actual flow will vary depending on viscosity of
fluid, distance pumped and actual speed of the pump.
Calibration may be required to determine actual flow with
each installation.
Calibration
The SR-4000/SR-6000 have a nominal flow rate of 6 fluid
ounces per minute per pump (@60 RPM). When pumping
into an open or non-pressurized location, the actual pump
flow can be measured at the output point by pumping ac-
tual product into a container of a known volume. In pres-
sure applications, the actual pump flow can be determined
by measuring the amount of actual product that is drawn
out of a container. A good amount to measure is 6 ounces.
Measure (in seconds) the time it takes to pump 6 ounces
and divide that by 60 seconds to determine the time vari-
ance from the chart. Use the formula below.
If the main circulator pump operates on a timer, the chemi-
cal feeder should only operate when the circulator pump is
running. In this case, adjust interval and dose settings to
allow for intermittent operation.
Thus the calibrated new duration would be set to 27 sec-
onds. This will now deliver the required daily dosage.
