Pulsafeeder Chem-Tech Prime Performance User Manual

Addendum Chem-Tech Prime Performance

Degassing Pump Head Instructions

NOTE: Head is for use on 15, 24 and 30 GPD models only!!

Before performing any maintenance or repairs on chemical metering pumps, be sure to
disconnect all electrical connections and insure that all pressure valves are shut off and pressure in
the pump and lines has been bled off.

Always wear protective clothing, gloves and safety glasses when performing any
maintenance or repairs on chemical metering pumps.

INTRODUCTION

The degassing head is designed to return a small percentage of the pumps output back into the tank
through the degas valve when the pump is operating. The fluid that is being returned via the return
line to the tank is part of the normal operation of the degassing head. As a result, the pumps
maximum output will be reduced and its output should be verified and adjusted as necessary. Install
the pump as show in figure 1 while adhering to the following installation instructions:

INSTALLING A PRIME PERFORMANCE PUMP WITH A DEGASSING HEAD

1. Connect one end of the clear PVC suction tubing to the suction valve on the bottom of the
pump head.

2. Slide the other end of the suction tubing through the strainer weight and install the foot valve
on the end, see figure 1.

3. Connect the discharge tubing to the discharge valve coming out of the side of the pump head.

J32079 Revision B

Figure 1

4. Connect the return tubing to the degas valve on the top of the pump head.

5. Secure the other end of the degas return tubing to the top of the solution tank above the level
of the chemical.

TIP: For best results, insure the strainer / tubing hangs vertically and is as short as possible with the
strainer near the bottom of the solution tank but above any sediment, see figure 1.

DEGASSING HEAD, FLOODED SUCTION INSTALLATION

(NOT RECOMMENDED)

Figure 2

CONVERTING AN EXISTING PUMP TO A DEGASSING HEAD

1. Disconnect the suction, discharge and return tubing (if applicable) from the existing pump
head.

2. Remove the four head screws / washers from the pump head. Remove the head assembly
from the pump.

3. Place the degassing pump head assembly on the pump with the head arrow pointing up.

4. Reinstall the four head screw / washers. Tighten the screws evenly in a crisscross pattern
until they are hand tight (18-22 in/lbs (8-10kg)).

NOTE: Although not included, bleed valve may still be used on discharge valve for convenient
manual pressure relief and drain of discharge line.

PRIMING THE PUMP

1. Turn on the power to the pump.

2. Adjust the stroke length to 100%.

3. At this point, the pump will automatically purge the air from the pump head via the degas
valve. Once the fluid starts pumping out of the discharge line, re-adjust the pump flow to the
desired rate.

J32079 Revision B