Dow FROTH-PAK Refill Systems - Manual (Page 24)

dow Building Solutions
3 . Verify that the nitrogen cylinder pressure using the center
gauge of the nitrogen regulator assembly . The system WIll
nOT operate efficiently if the pressure falls below 500 psi .
If below 500 psi, replace the nitrogen cylinder .
4 . Turn the left regulator stem clockwise to the proper
pressure setting of the “a” tank (120–160psi – Do not go
over 225psi) (see section 12) .
If a hissing sound occurs, further tighten the yellow/red-
coded nitrogen line connection to the nitrogen regulator
assembly and/or the nitrogen intake valve connection on the
“a” tank using an adjustable wrench . If the left gauge fails
to indicate a pressure setting, contact your Dow Sales
Representative .
5 . Turn the right regulator stem clockwise to the proper
pressure setting of the “B” tank (120-160psi – Do not
go over 225psi) (see section 12) .
If a hissing sound occurs, further tighten the yellow/blue-
coded nitrogen line connection to the nitrogen regulator
assembly and/or the nitrogen intake valve connection on the
“B” tank using an adjustable wrench . If the right gauge fails
to indicate a pressure setting, contact your Dow Sales
Representative .
6 . Slowly open the nitrogen intake valve of each tank . The valve
handles should be parallel with the nitrogen lines .
7 . Slowly turn on the chemical valve of each tank . The valve
handles should be parallel to the chemical lines . Verify that
the filter connection of each tank is tight and that no chemical
leaks are present .
8 . Slowly turn on the on-off valves . The handles should be
parallel to the chemical lines . Verify that the connections of
each valve are tight and that no chemical leaks are present .
9 . Slowly turn on the in-line on-off valves . The handles should
be parallel to the chemical lines . Verify that the connections of
each valve are tight and that no chemical leaks are present .
10 . Remove the used nozzle by pushing down the nozzle ejector .
8 .2 System Purging and Testing
1 . dO nOT breathe vapor or spray . Proper PPE and ventilation
are required . See product SDS and Section 2 of this manual
for further information . Follow all precautions for product .
2 . Dispense chemicals in an appropriate container .
This is to verify proper chemical flow .
3 . Clean any chemical from the InSTa-FlO™ Gun face
using a rag or paper towel .
4 . Insert an unused nozzle with the key slot down . Push
in firmly until the nozzle ejector is seated over the
back rim of the nozzle .
5 . Dispense foam to verify proper chemical mixing .
If improper mixing or poor foam quality, refer to the
Troubleshooting section, Section 10 of this manual .
Section 9
Tank Change-over
1 . dO nOT breathe vapor or spray . Proper PPE and ventilation
are required . See product SDS and Section 2 of this manual
for further information . Follow all precautions for product .
2 . Putting on a fresh set of tanks is essentially the same process
as the initial start-up . One big difference is that the lines have
chemicals in them . If exposed to the atmosphere for more
than a few minutes, the a Side line will become plugged . So
keep the lines hooked up to the empty tanks until you are
ready to put on the fresh set .
3 . Double check that the nitrogen tank is above 500 PSI .
4 . Prep the new tanks as outlined above right to the point of
hooking up lines .
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