Dover PSG Neptune, Установка, эксплуатация и обслуживание

Страница: 11 / 34

6
OPERATING INSTRUCTIONS
Please refer to system specific mechanical and electrical drawings and schematics for full
information about the particular unit purchased for this site.
CONTROL PANEL
1. The power switch supplies power to the entire system when turned to “LOCAL” red run light
will be lighted. When the power switch is in the “REMOTE” position, the unit is unable to run if a
remote switch permits operation. Examples of the use of the remote contact would be starting to
refill a tank on low level and stopping on high level or starting water flow in a treated line and
stopping when the water flow ceases.
2. The pressure switch located in the dilution water line needs to be activated by dilution water
pressure before the polymer pump or Gatlin mixer will operate. If the flow of water is not sufficient
to create 25 psid of differential pressure, the system will go into a “standby” mode.
3.
If a low water differential pressure condition is sensed, the amber “FAULT” light will come on and
the pump and Gatlin will stop.
4.
The system will automatically restart once differential flowing water line pressure is 25 psid or
higher. Maximum static water line pressure is 100 psi.
5. The solenoid valve will open when the system power is “ON”. The polymer pump will also be
energized but individual speed or stroke control settings may cause it to operate anywhere from 0-
100% of capacity, i.e., the pump can be turned “OFF” by its’ own control knobs even when the
systems power is “ON”.
FLUSH WATER
1. Normally, the Polymaster is flushed before shutdown. To flush, turnoff the polymer feed pump or turn
the stroke speed to “0” using the controls on the face of the pump. Now, only dilution water is flowing
through the system. Allow the water to run for 5-10 minutes, while the Gatlin is turning, to completely
flush-out the system.
2.
Do not flush the chemical feed pump or pump suction and discharge lines with water as water
will mix the polymer in the line and may solidify or gel plugging the line.
3. For extended shutdown (more than 3-days) the chemical feed pump head and lines can be filled with
mineral oil. Simply connect the suction line to a source of mineral oil, or fill the calibration column
with mineral oil, and allow the unit to run until mineral oil has been drawn completely through the
suction line, pump head and discharge line up to the Gatlin. Turn off the chemical feed pump as soon as
these lines are filled with mineral oil and continue to run dilution water through the system for at least
5-10 minutes before shutting down.