Pulsafeeder PULSAtron Series MP EN - Manual (Page 18)

18
START UP AND OPERATION
POWER
All metering pumps are available in 115 volts at 50/60 Hertz, single phase. Optionally 230 volts at 50/60 Hertz, single
phase can be provided. Prior to start-up always check to insure that the pump voltage/frequency/phase matches
that of the power supply.
: If pump is fitted with a PVC pump head (7th position of model number is “V”. Note: PVC is gray,
not black), uniformly hand-tighten the four head screws before use (18-22 inch pounds / 3.21-3.93
kg/cm). Periodically tighten after installation.
PRIMING
: When working on or around a chemical metering pump installation, protective clothing and gloves
and safety glasses should be worn at all times.
All pumps are tested with water. If the chemical to be pumped reacts when mixed with water (e.g.
sulfuric acid, polymer) the pump head should be removed and dried thoroughly along with the
diaphragm and valve seats.
1. Turn on the power to the pump. Operate the pump in the fixed rate control mode at 100% (full) rate. The green LED
will light up and flash off each time the pump strokes.
2. Adjust the stroke length knob to the 100% setting mark (for more information see “Stroke Length Adjustment” on the
following page).
3. If the discharge line is connected directly to a pressurized system it should be temporarily bypassed during priming
of the pump. A bleed valve will simplify this operation by allowing easy bypass of the discharge fluid. All air must be
purged from the pump head before the pump will pump against pressure.
Air Bleed Operation:
A) While pump is running, turn adjustment screw counterclockwise.
B) Run with valve open until a solid stream of fluid comes out of the bypass tubing (1/4 x 3/8
supplied with valve), no air bubbles.
C) Close air bleed valve by turning adjustment screw clockwise.
4. Chemical should reach the pump head after a few minutes of operation. If not, remove the
discharge fitting and moisten the discharge valve area (ball check and valve seats) with a few
drops of chemical being fed to the metering pump. For safety, always use protective
clothing and gloves, wear safety glasses and use a proper container to hold the
chemical.
5. If the pump continues to refuse to prime, refer to Troubleshooting Section of these
instructions.
6. Turn the power on once more and adjust the pump flow to the desired rate (see “Controlling
Procedure” below).
7. Always check the calibration of the pump after start- up. It’s best to calibrate the pump under your typical use
conditions.