SECTION 2-15
EQUIPMENT DESCRIPTION
FLOWMAX RO MANUAL REV: B 05/1999
USFilter
United States Filter Corporation
Valve Sequence Chart
RUN MODE
PUMP
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10 V11
RO Off
Off
{
z
z
}
z
z
}
}
z
{
}
RO start – quality below setpoint – start up rinse
Off
{
{
z
}
z
z
}
}
z
{
}
RO start – quality above setpoint – normal operation
On
{
{
z
}
z
z
}
}
{
z
}
Product water quality fault time delay
On
{
{
z
}
z
z
}
}
z
{
}
RO stop - 60 second time delay
Off
{
{
z
}
z
z
}
}
z
{
}
RO in standby mode – HOA in AUTO position
Off
{
z
z
}
z
z
}
}
z
{
}
RO in autoflush mode – HOA in AUTO position
On
{
z
z
}
z
z
}
}
z
{
}
RO out of Service
Off
z
z
z
z
z
z
z
z
z
{
z
{
-fully open
}
-partially open
z
-closed
V1
optional main shutoff valve located off skid, supplied in field
V2
automatic feed water shut off valve
V3
feedwater sample valve
V4
pump discharge throttling valve
V5
interstage sample valves, one per stage
V6
final product sample valve
V7
reject throttling valve
V8
manual reject throttling valve bypass valve
V9
product to storage tank valve (located off skid)
V10
product to drain valve (located off skid)
V11
reject recycle throttling valve (3M systems only)
