Dow FROTH-PAK Refill Systems - Manual (Page 18)

dow Building Solutions
9 . Connect an in-line on-off valve to the other end of
each chemical hose . Verify that the arrow on each
valve points away from the hose being connected –
arrow indicates chemical flow . Tighten each connec-
tion with two adjustable wrenches .
10 . Connect the Gun/Hose assembly to the in-line valve
of each hose, “a” labeled hose to “a” labeled hose, the
unlabeled hose to the unlabeled hose . Tighten each
connection using two adjustable wrenches .
Section 4
Start-up Procedure
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 .
4 .1 System Pressurization
1 . Verify that the valve stems on the regulator are backed
out and are freewheeling .
2 . Open the nitrogen bottle valve by turning the knob
on top of the cylinder counterclockwise . If a hissing
sound occurs, further tighten the nitrogen regulator
valve stem with an adjustable wrench .
3 . Verify 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-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 Chemical
Sales Representative .
3 .4 Chemical Hose Installation
1 . Verify that the chemical tank valves are closed . The handle
should be perpendicular to the valve . Remove the chemical
valve plugs from the “a” and “B” tanks and place the plugs on
top of the tank .
2 . Carefully remove all of the vaseline in the “a” chemical
tank valve .
3 . Remove the chemical filters from the canvas bags on
top of each tank . Verify that the filter and the cartridge
are free by shaking the filter until you hear a clicking
sound .
NOTE: Air blown into end in the direction of arrow will pass
freely through the filter.
4 . Connect a chemical filter to each tank valve with the
filter arrow pointing away from each tank . The arrow
represents the chemical flow . Tighten the filters with
an adjustable wrench . The filter prevents chemical
from flowing back into the tank .
5 . Take the on-off valves with the swivel ends and
connect them to each tank filter . Tighten the connec-
tions with an adjustable wrench .
6 . uncoil the chemical lines . Tape them together every
few feet with tape .
7 . Connect the “a” labeled chemical hose to the “a”
tank on-off valve . Tighten the connection with an
adjustable wrench .
8 . Connect the other chemical hose to the “B” tank on-off
valve . Tighten the connection with an adjustable wrench .
10