1995-08-11_REVISION - M1977493 (12)

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Page 3 Volumes Per Reservoir Elevation % Total Volume (Gal) Function 11048'-6" 20188 Low level alarm 11040'-2" 0 25052 Stop system No. 1 11052'-7" 31 122666 Start system No. 1 11053'-1" 37 140732 Stop system No. 2 11055'-4" 67 232082 Start system No. 2 11055'-6" 69 . 239284 Peak flow condition 11057'-6" 100 331129 Overflow alarm Scan Alarms - At the pumping station the scan alarm board has 12 alarms in 4 columns. The first two columns are concerned with pump set failures. Reservoir alarms are in the third column. The fourth column contains alarms for the sump on the bottom floor, the processor if it fails and the hydraulic valve and/or surge suppressor failure. Scan Alarms are . (1) Pump Set Failure In the automatic mode of operation this alarm will be activated if the probe control calls for a pump set to come an line and the set fails to function. During manual operation this alarm will come on if one of the pump selector switches is in the start position and any of the. pump not r nn i ng �' c. 1.4• ..q., "'�' .:{... M ••- '� .. (?) Reservoir Low Level - This alarm is activated if the water level in the reservoir drops below El . 11 ,048'-6". The pumps may need to be re-- primed. (;) Peak Flow Condition - This alarm is activated if the water level in the reservoir rises to El . 11 ,055'-6"• (4) Reservoir Overflow - This alarm activates if the water level in the res- ervoir reaches 11 ,057'-611. (5) Sump Pit Hi-Hi Level - This alarm activates when the water -level in the' sump pit rises to the level of the bottom of the floor trench in the base- ment. (6) Processor Fault - This alarm indicates a failure in the programmable controller or a 480 volt power loss. All of the pumps will go down and will remain down until the fault is cleared. Contact an electrician if you cannot restart the pumps by (a) placing all pump selector switches to off, (b) resetting processor fault, and (c) selecting desired pump systems to auto. (7) Valve Failure - The activation of this alarm indicates that the hydraulic valves on discharge line No. 2 has failed to fully open or fully close, a check valve on one of the pumps sets has failed to close causing low manifold pressure, the head pressure in discharge line No. 1 is below the required level because the check valve has failed to close, or the discharge line is not primed.