Instruction Manual

OPERATION (Charging the PULSAtrol)

A. Discharge Installation

The air side of the PULSAtrol must be precharged to approximately 50 percent of anticipated mean line

pressure before placing on stream. This will permit the diaphragm to move to a neutral position between the

chambers when operating.

PROCEDURE

Pre Charge Procedure for Discharge Installation

1. Calculate the precharge pressure

Mean Line Pressure (PSIG)

+ Atmospheric Pressure

Absolute Pressure (PSIA)

x Precharge Percentage (80% Max.)

Pressure Absolute

- Atmospheric Pressure

Precharge Pressure (PSIG)

= Precharge Pressure

2. Isolate PULSAtrol from line.

3. Carefully drain off process fluid by opening a drain valve (see recommend piping arrangement).

4. Apply precharge pressure (additional liquid may drain as diaphragm moves).

5. Close drain valve.

6. Place PULSAtrol in stream.

B. Suction Installation (Flooded Suction)

Charge the PULSAtrol with adequate pressure to overcome the static suction head. Start up the pump.

Depress the stem on the charge valve, but only during discharge strokes of the pump, until the gauge indicates

pressure pulses. The diaphragm has not centered allowing the PULSAtrol to accumulate liquid while the

pump is discharging. If too much air becomes released and the gauge will not indicate pressure pulses then

recharge the PULSAtrol and repeat the procedure.

PROCEDURE

Pre Charge Procedure for Suction Installation

1. Isolate accumulator from line.

2. Carefully drain off process fluid by opening a drain valve (see recommended piping arrangement,

attached).

3. Apply 5-10 psi precharge pressure (additional liquid may drain as diaphragm moves).

4. Close drain valve.

5. Bleed off all pressure on the PULSAtrol.

6. Open the valve to put PULSAtrol in stream.

7. Push in on the stem of the charging valve during the discharge stroke of the pump and release

during the suction stroke.

8. Continue this for about 10 times and observe the compound gauge. As accumulator functions, the

needle will go from pressure to vacuum.

C. Suction Installation (Suction Lift)

Consult your PULSA Series representative or the factory for details.