apply the load until the personnel in the ROWPU are ready for power. You
must make the proper checks at the ROWPU control panel.
You have your crew prepare the air system.
They check the air
compressor oil level dipstick and add oil if needed.
They close the air
compressor bleed valve. You check the air compressor hourmeter and unit log
for last filter replacement and determine if filters are to be replaced.
The inlet and outlet filters are replaced if needed. Ensure all valves on
the air system are properly positioned and turn on the air compressor when
You have your crew close all vent, drain, and sample valves, and
preposition manual valves.
You check to see if the manual valves are
positioned as follows:
a. Close the cartridge filter block valve, the cleaning bypass valve,
the clean/flush tank fill valve, the product utility valve, and the clean
b. Open the feed valve and the product shut-off valve.
After the air pressure has reached 80 psi, have an operator connect
the utility air hose and fill the stable levels to 30 psi. Failure to do
crewmember positions and checks the switches and indicators at the main
You remind him that 85 psig is required for proper
functioning of the automatic valves. You check the level of carbon monoxide
in the van.
You are now ready to start the ROWPU from the secured condition.
Based on test results of the raw water, you know that you will have to use
polyelectrolyte. Have a soldier prepare the initial polyelectrolyte setup.
Polyelectrolyte containers and bottles are identified by a triangle symbol.
The soldier properly mixes the chemicals, primes the pump, and wants to know
what the initial setting should be. You tell him that the setting is based
on the water source/conditions (See Table 1-1).
After the soldier resets
the stroke and speed, the soldier stops the chemical pump.