PS Magazine - TB 43-PS-604
PS, The Preventative Maintenance Monthly
ISSUE 604
MARCH 2003
A
ROWPU operator with a long face and rampant mood swings can only mean one
thing: his water purification unit isn’t working, or it’s pumping out swamp water!
Preparing the ROWPU for transport and some good PM will get rid of the long
face and keep your ROWPU mission-ready.
PM
Tips
PS 604
MAR 03
53
600-GPH ROWPU…
Travel Know-how
During travel, the product flow
valve should be in the open, not
closed, position. Also, it shouldn’t
be tightened. Tightening it in
either position could damage the
valve, because it could corrode in
place. Then it takes excessive
force to move the valve. The
threads could be damaged or the
valve stem broken off.
Get Rid of Groove
If the ROWPU’s water
suction hoses are quickly get-
ting a “set” or groove in the
gaskets, they’re too tight. So
tighten ‘em just enough to
hold a seal.
Reverse the gaskets be-
tween uses to help keep the
seals from getting grooved.
6-Way Valves
The 6-way valves are mold-
ed with numbers on them.
When you take apart the
valve, make sure you look at
the numbers and mark the
tubes with the same number as
the 6-way valve connection. If
you don’t, you’ll put your
valve back together wrong.
Timer Reminder
The timer has six tubes connected to it from the 6-way valve and two from the
multimedia backwash piping. Mark these in the same manner. If the timer or the
valve connections are wrong, the backwash cycles will be out of time. Then you can’t
backwash the multimedia filter, and your mission goes down the drain!
In fact, always tag, mark or identify every wire, hose, tube or line so that you can
put your ROWPU back together the same way you took it apart.
Never bypass or override the timer during operations. The backwash cycle on the
ROWPU cannot be controlled manually, and bypassing the timer could damage it.
Worse yet, it’s dangerous! If you touch the capacitor or any other “hot” part of the
electrical timer, you could be seriously injured.
Remember, always allow the backwash cycle to complete itself naturally once it
begins. Reset the switches before backwashing only if the timer is not functioning,
but make no other changes.
I forgot to
mark the tubes
for tHE rowpu’s
6-way valve!
oh
no!
…the backwash
cycles would’ve
been
out of time!
I guess that’s
what happened.
Go easy
on product
flow valve
Reverse gasket
for longer use
Six-way
valve has
numbers
1-6 on it
Transport and
…and
every
single uniform
smells and looks
like this!
this smells
like
swamp
water!
what
th-!?
and if
the valve
connections
were
wrong
…
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