8576246 - Laserfiche WebLink

Home Browse Search

8.2 Pump, Control, and Alarm Testing It is necessary to test the pumps,controls, and floats for proper function on a periodic basis. Various conditions may be simulated by SLOWLY moving the float stem up and down. This should be done at the same time as the screen inspection.Record the date,time, and readings from each of the meters(EC and ETM for each pump,and additional ECs as present)before and after conducting pump and control system checks. Testing the pump and control systems can be conducted with the following steps: 1. Begin by opening the control panel to see if a pump is currently running. 2. If so,wait until it stops and then record the meter readings. 3. Use a 3/16-inch hex key to remove the stainless steel bolts from the fiberglass lid attached to the polyvinyl chloride(PVC)riser at the outlet end of the surge dosing tank to reveal the floats and pump assembly. 4. Note which lights are illuminated and compare against the expected position of each float. 5. Carefully the float stem from its bracket with a minimum amount of movement. 6. SLOWLY lower the float stem. 7. Verify each float position against the indicator(s)in the control panel(lights and numbered input displays on the programmable logic control unit[PLC], specifically known as a Logo! Unit). 8. For the surge dosing tank,when the Normal Timer float is raised,the PLC should begin to count down the off time. 9. When the Override Timer float is raised,the PLC should adjust to the shorter off time. 10. The predetermined off time may need to be reduced to something very short(e.g., 15 seconds)to enable testing of the pump running in automatic mode(do not forget to reset back to the original off time when done). 11. When the High Level Alarm float is raised, an alarm should sound(light and buzzer). 12. SLOWLY raise the float stem. 13. When the HLA float drops,the alarm should cease but the pumps should continue to run.The lead pump should continue to run until the designated run time is complete or the Redundant OFF float drops. 14. Repeat steps 8 through 12 to verify that the lead pump alternated(e.g.if Pump 1 was lead the first time,then Pump 2 should be the lead the second time). 15. To test the Redundant OFF(RO)function,turn the control switch for the appropriate pump(s)to manual. 16. SLOWLY raise the handle for the float stem adjacent to the active pump(s)until the Redundant OFF float is hanging freely(not touching the water).The pump(s)should turn off and the alarm should sound(light and buzzer). 17. SLOWLY lower the handle into the water until the float is submerged.The pump(s)should turn on and the alarm should cease. 18. Return the control switch to auto. 19. Record all observations on Form 4. CES-Albany,OR St.Innocent Winery and Tasting Room 0&M Manual Doc:2018240028 St.Innocent Winery OM BTR May 2018 I Page 5