Pulsafeeder PULSAtron Series HV EN - Manual (Page 8)

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5.0 START UP AND OPERATION
5.1 Power
All metering pumps are available in 115 and 230 volts at 50/60 Hertz, single phase. In addition, certain models are
available in 12 volt DC. 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 (7 th position of model number is “V” or "W". Note: PVC is gray, not
black), uniformly hand tighten the four head screws before use, 18-22 in. lbs. (3.2 -3.9 kg/cm). Periodically tighten after
installation.
5.2 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.
Turn on the power to the pump. The green LED (not available on all models) will light up and flash
off each time the pump strokes.
Adjust the stroke rate knob to the 100% setting mark (for more information see Section 5.3,
Capacity Control).
Adjust the stroke length knob to the 100% setting mark if applicable (for more information see
Section 5.3, Capacity Controls).
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. Air must be purged from the pump-head before the pump will operate against
pressure. (See Figure 9)
Air Bleed Operation:
While pump is running, turn adjustment knob counterclockwise.
Run with valve open until a solid stream of fluid comes out of the bypass tubing with no air bubbles.
Close air bleed valve by turning adjustment screw clockwise.
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.
If the pump continues not to prime, refer to Section 7.0, Troubleshooting, of these instructions.
Once the pump has been primed and is pumping the chemical through the head, turn off the power, reconnect the
discharge tubing (if it had been removed) and immediately clean any spilled chemical that is on the pump housing or
head.
Turn the power on once more and adjust the pump flow to the desired rate (see Section 5.3.3, Controlling Procedure).
Always check the calibration of the pump after start- up. It’s best to calibrate the pump under your typical use conditions.
5.3 Capacity Control
Capacity can be controlled by means of the stroke length adjusting knob and/or stroke rate adjusting knob (except model
C pumps). Control knobs provide coarse adjustment; use a calibration column for accurate calibration. Contact your
pump supplier for proper calibration equipment.
5.3.1 Stroke Frequency Adjustment (E, E-DC, E+, A+, C+ and HV only)
Stroke frequency can be controlled from 10 to 100% (12 to 125 strokes per minute on 125SPM models or 25 to 250
strokes per minute on 250SPM models) by means of the electronic circuit.
Stroke frequency can be set by means of the stroke rate adjusting knob even while the pump is in operation (See Figure
10).