Series SLA Electric Pump with LeakLess Head
Operating Manual
CP/MAN-PRD-021-P REV.01EFF. DATE: 01/13/2023
Page 10 of 13
level drops too fast to allow for a full minute, shorter periods are acceptable. Try to size the gauge so that at least a 30
second test can be made, or a loss of accuracy will result.
10.7
Proper gauge placement and plumbing is important. Please refer to Figure 1 for appropriate valving and
placement, and for reference numbers as used in this section. The calibration gauge is labeled as Item 5 in Figure 1.
10.8
With the pump either running or stopped, open the Gauge Fill Valve (Figure 1, Item 4). The calibration gauge
(Figure 1, Item 5) should begin to fill. Continue filling until the chemical level is at or near the top markings on the gauge,
then close the Gauge Fill Valve (Figure 1, Item 4).
10.9
Now ensure that the CheckPoint pump is running. Take note of the level of chemical in the gauge using the
appropriate scale for the volume units you want to measure the pump’s output in. Usually, the calibration gauge will show
liters on one scale and quarts or gallons on the other. It is best to write down the number so that you can calculate flow
accurately.
10.10
Open the Gauge Fill Valve (Figure 1, Item 4), and immediately close the Chemical Supply Valve (Figure 1, Item 1).
This isolates the pump and gauge so that the pump is being supplied directly from the gauge.
10.11
The level in the gauge should begin to fall. When the liquid level in the gauge gets near the bottom of the gauge, or
when one minute has expired (whichever comes first), stop timing, note the ending level on the gauge, and reopen the
Chemical Supply Valve (Figure 1, Item 1).
10.12
Write down the amount of time in seconds and the final gauge reading, then close the Gauge Fill Valve (Figure
1, Item 4).
NOTE: Failure to reopen the Chemical Supply Valve will result in the pump quickly depleting the remaining chemical in the gauge
and sucking in air from the gauge, necessitating pump re- priming.
NOTE: In cases where the chemical flow rate is extremely low, you may need to time for longer than one minute to allow an
adequate amount of chemical to move out of the gauge.
10.13
The pumping volume (in the units specified on the gauge scale) is given by the following equation:
[END READING] – [BEGINNING READING]
PUMPING VOLUME
= X 60
[DURATION OF READING IN SECONDS]
NOTE: To ensure accurate stroke rate measurement, allow sufficient measurement duration. Where possible, allow at least thirty
seconds of gauge drawdown.
