1.System Specifications

            Net Weight: 25 lbs.

            Shipping Weight: 27 lbs.

            Dimensions: 24” W x 24”H x 10” D

2.System Requirements

            Electrical: 120 v. AC input, reduced to 24 v. AC control voltage.

Water: 45 psi minimum fresh water (make-up), ca. 0.9 gpm max. flow; 3/8” copper tubing connection provided, user should provide local shut-off valvee.

3.System Components

a)      Water Supply Brass Piping, consisting of 3/8” inlet copper tubing connection, Y- strainer, pressure regulator, pressure gauge and vacuum breaker (backflow prevention) and two solenoid valves.

b)      Dissolver Bowl with 120-degree nozzle, with discharge piping to reservoir.

c)      Solution Reservoir, equipped with level control system and high level indicator system, and with PVC discharge piping equipped with ½” FIP adapter for output to customer’s process.

d)     Transformer, 120 v AC to 24 v AC for control voltage.

e)      Plastic Electrical Control Box with red high-level alarm indicator, on the DIN electrical cord at the normally open (N/O) solenoid.

4. Mounting

a)     Wall-mount units, with four- 5/8” holes at corners for anchor bolts.

b) Units should be mounted above the level of metering pump inlets to provide flooded suction. For this reason, vertical mounting of two or more units is not recommended since the added height needed for jar changing would require special handling provisions.

c) Note that the chemical jar and water in the system will add about 19 lbs. to the net system weight

5. Installation

a) Mount the unit as close as practicable to the chemical feed pump.

b) Water: User should provide a local shut-off valve and 3/8” tubing to hook up to the 3/8” compression fitting on the unit. Water must be fresh make-up water for the system being served.

c) Electric: A 8’ power cord is provided with the unit; it is recommended that a 120 v GFCI receptacle be provided within 4’ of the unit. If an external alarm is desired, remove the plug on the bottom of the black electrical box and the cover of the box; connect the leads for external wiring to the yellow and black wire ends that are covered by electrical tape.

d)       Chemical Pump Connection: A 3/8” tubing fitting is provided on the unit.

6. Operational Overview

a) When the unit is turned on, both upper and lower solenoid valves open to let water flow into the system, filling the reservoir with solution until the middle float switch is activated to turn off the upper solenoid valve.

b) When chemical pump is activated, chemical solution is drawn from the white reservoir.

c) When the reservoir level drops to the low-level float switch the sensor activates the upper solenoid valve, allowing water to spray into the jar of chemical in the gray bowl.

d) Water dissolves some of the chemical and drains into the white reservoir until the level builds and the middle float switch is activated.

e) When the middle float is activated, the solenoid valve closes and water flow stops.

f) This fill/ empty/ refill cycle will continue automatically.

g) Should the upper solenoid valve remain stuck in the open position or if leak-by occurs, the upper float switch will activate, closing the lower (N/O) solenoid valve and activating the alarm light.

h) Should a power outage occur, the upper solenoid valve (N/C) closes to prevent an overflow.

7. Start-up and Testing

a) Place and seat chemical jar until secure. Make sure that the red-handled PVC valve in the discharge line is “Off”.

b) Before proceeding to turn on the water, first ascertain the proper operation of the overflow function by plugging in the unit to a 120 v outlet; you will hear both solenoid valves click open. Gently lift the lower and middle float switches to close the upper solenoid, and lift the top switch. You should hear the lower solenoid close and observe the red alarm indicator light up. Turn the local water valve to the “On” position.

c) Plug the power cord into the 120v outlet. You should hear the solenoid valves click open and observe a flow of water into the white reservoir.

d) Water flow should continue until the middle float switch is activated, at which time the solenoid valve will close.

e) If the unit fails to complete any of these steps, please refer to the trouble-shooting guide or call your local service center.

f) If all steps above are satisfactory, open the red valve and turn on the chemical feed pump for normal operation.

8. Chemical Jar Changing

a) Turn off water supply valve.

b) Remove empty chemical jar and discard.

c) Remove lid from new jar and insert, top down, into the gray bowl.

d) Re-open the water supply valve.

9. Maintenance

a) Isolate the system by closing the water supply valve and the discharge valve.

b) Disconnect the electrical connection.

c) Disconnect chemical suction pump fitting at the pump head and place tubing into bucket.

d) Open red valve to drain bowl.

e) Open white reservoir and clean level sensors as needed.

f)     Open Y-strainer and clean screen as necessary. Replace the plug when finished.

g) If desired, clean or repair the solenoid valve.

h) Re-connect tubing to the chemical feed pump; if solution in bucket is useable, dump into the white reservoir.

i)     Plug system in, open water supply and turn on the chemical feed pump.

10. Troubleshooting

               Symptom                                          Cause                                      Repair 

11. Major Components (See Fig.1)- * denotes recommended spare part

Figure 1

Typical Cooling System Schematic                            Showing Dissolving Unit & Bleed/Feed Equipment

Figure 2