Xylem C-1100V DIAPHRAGM METERING PUMPS - Manual (Page 18)

Page 18
6.7 Measuring the Pump’s Output - Volumetric Test.
This volumetric test will take into account individual installation factors
such as line pressure, fluid viscosity, suction lift, etc. This test is the most
accurate for measuring the injector’s output in an individual installation.
1. Be sure the Injection Fitting and Footvalve/Strainer is clean and working
properly.
2. Fill a large graduated cylinder with the solution to be injected.
3. With the pump installed under normal operating conditions, place the
suction tubing with the Footvalve/Strainer installed in the graduated
cylinder.
4. Run the pump until all air is removed from the suction line and the solution
enters the discharge tubing. If the pump does not easily prime, remove the
discharge tubing from injection fitting until the pump primes. Re-connect
the discharge tubing to the injection fitting.
5. Remove the suction tubing from the graduated cylinder and refill the
graduated cylinder if necessary. Note the amount of solution in the gradu-
ated cylinder.
6. Place suction tubing with the Footvalve/Strainer installed back into the
graduated cylinder.
7. Run the injector for a measured amount of time. A longer testing time will
produce more accurate results.
8. Remove the suction tubing from the graduated cylinder. Measure the
amount of chemical injected.
6.8 FVS - Flow Verification System The C-
1100V is equipped with a Flow Verification System which is designed to
stop the pump and provide a contact closure output in the event the sensor
does not detect chemical during pump operation. This could indicate a
clogged injection fitting, empty chemical solution tank, loose tubing
connection, etc.
To allow the pump to clear any gasses that may have accumulated during
stopper operation (such as with chlorine), an alarm delay time value from 1-
256 seconds must be programmed (An alarm delay value of 000 seconds
disables the FVS system). The pump will stop, and the alarm mode
activated, if no pulses are received by the pump and the alarm delay time
period has ended. Press the STAND-BY button twice to clear the alarm and
restart the pump. The Flow Verification Sensor is sold as an optional
accessory.
- (sensor sold separately)
C-1100V