b. Valves for proper position.
c. Suction hose connections to assure tightness.
11. The flowmeter reads 100 GPM. You ensure the operator opens the media
filter vent valve and closes it when water comes out. You inform the crew
that they must hold steady these conditions (no control operations) for 10
minutes. Now is a good time for you to get your crew together and review
the next set of procedures. This is also a good time for you to get your
reports and logs organized.
12. Ten minutes have passed so you instruct a crewmember to fully open the
cartridge filter block valve, the feed valve, and the system pressure
control valve.
The soldier also pushes the media filter forward flush
button. The feed pressure low light will go off. You instruct him to vent
the cartridge filter and close it when water comes out.
13. Before starting the high pressure pump, have the crew setup the
clean/flush tank so that it is ready for backwash procedures.
The crew
should perform the following procedures:
a. The operator should connect the cartridge filter water hose to the
clean/flush tank inlet and open both the valves to fill tank. Do not fill
the tank above the 100 mark to avoid water overflow thru the access port
when opened.
b. Loosen the wing nut on the access port cover and open the chemical
port cover.
Open one small packet of bisulfite and empty into the
clean/flush tank.
Clean off any chemical that lays in port opening and
install cover.
c. Fill the tank to the top and close when the level reaches the top of
the level gage. The clean/flush tank is now ready for the first backwash.
14. Prepare to start the high pressure pump.
The waste flowmeter
indicates a steady flow.
If the waste flowmeter does not indicate flow,
ensure that the pressure control valve is open and the waste hose is not
capped. The low feed pressure light should be off and the system pressure
control valve is open. If the cartridge filter inlet/outlet pressure gage
shows at least 50 psig, have the operator start the high pressure pump. Do
not exceed 900 psig. Once the high pressure pump is started, have the crew
perform the following:
a. When the system pressure gage stops rising, turn the system pressure
control valve clockwise slowly until product flowmeter shows mission normal
water flow. The average mission
1-9
QM4911
Previous Page
