Table 2-3. Main Control Panel Controls and Indicators (Continued)
(Item numbers are keyed to Figure 2-4)
Control or Indicator
RAW WATER PUMP START
RAW WATER PUMP STOP
CHEMICAL PUMPS START
CHEMICAL PUMPS STOP
BOOSTER PUMP START
BOOSTER PUMP STOP
HIGH PRESSURE PUMP START
HIGH PRESSURE PUMP STOP
PANEL LIGHT ON/OFF
SUMP HEAT/PUMP HEAT
MEDIA FILTER INLET V16
BACKWASH INLET V15
CLEAN/FLUSH OUTLET V5
MEDIA FILTER OUTLET V35
BACKWASH OUTLET V17
MEDIA FILTER FLUSH V36
Starts raw water pump.
Stops raw water pump.
Starts chemical pumps if individual pumps are set to run.
Stops chemical pumps.
Starts feedwater booster pump.
Stops feedwater booster pump.
Starts high pressure pump. Will not start while FEED
PRESSURE LOW light is on.
Stops high pressure pump.
Green light ON when generator set is on and the main
circuit breaker for the process control panel is closed (ON)
and the EMERGENCY STOP is pulled out.
Stops operation of all motors and automatic controls, when
For use during preoperational checks.
For use during preoperational checks. Replace any panel
lights that do not come on when this button is pushed.
Turns main control panel utility light on.
ON/OFF two position selector switch. ON position turns on
the heat tracing and pump heaters for cold weather protec-
tion (does not operate high pressure pump assembly heater).
Lights 29 thru 36 indicate open or closed status of auto-
matic valves. Light ON indicates an OPEN VALVE.
Blue light ON when media filter inlet valve is in its
normally open position (normal operation). The light goes
off (valve is closed) during media filter backwash sequence.
Blue light ON when valve is open, during second, third
and fourth steps of filter backwash, to let backwash
water into filter.
Blue light ON when the clean/flush tank outlet valve
has opened. Open during automatic flush at shutdown,
during final step of filter backwash, and during RO
Blue light ON when media filter outlet valve is in its
normally open position (normal operation). Light goes
off during media filter backwash sequence.
Blue light ON (valve open) during backwash. Light is off
during normal operation.
Blue light is ON when valve has been opened. Closed
(OFF) for normal operation.