Turn function switch on control cabinet (Figure 9-9) to AUTO.
When metering pump motor control MANUAL/OFF/AUTO switch is in AUTO, paddle
flow switch In ROWPU product water line automatically starts and stops metering
pump. This action controls amount of chlorine the pump Injects into the product
water. When product water starts flowing, pump starts and when product water
stops flowing, metering pump stops.
Turn chlorine metering pump motor controller AUTO/OFF/MAN switch (Figure 9-6) to AUTO.
Chlorination unit operates best when temperature of solution in holding tank is
between 75 and 95° F. Increasing cooling water flow decreases temperature;
decreasing flow Increases temperature.
Turn metering pump control MANUAL/OFF/AUTO switch (Figure 9-7) to AUTO.
Chlorination system is now operating in conjunction with the seawater system, ROWPU system, and drinking
water system to provide correct amount of chlorine solution to ROWPU product water.
While chlorination system is operating, monitor the following for normal indications:
Chlorination unit panel (Figure 9-5)
Makeup water flowmeter - 36 gph
Cooling water flowmeter - 80 gph
Cooling water pressure gauge - 20-40 psi
Heat exchanger pressure gauge - 30-60 psi
When reading not normal, troubleshoot as necessary.
Metering pump control unit (Figure 9-7)
Chlorine status on LED display.
Chlorination unit control cabinet (Figure 9-9)
Ammeter reading is between 950 to 1000 amperes (amps) (0.95-1.0 kilo amps)
Voltmeter reading is between 6.0 to 6.5 Vdc
Alarm When alarm sounds, turn ON/OFF switch to OFF. Check if one of the following goes out and
troubleshoot as necessary:
Power supply failure light
Circulation (recirculation) pump failure light
Low salinity light.