Dow FROTH-PAK Refill Systems - Manual (Page 22)

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5 . let the foam cure (a minute or two) look for an even tan
color foam . Watch to see that it rises 3 or 4 times the original
thickness . Make sure the foam has cured and is firm .
6 . If the foam looks unusual, verify the calibration settings and
that the tanks are 70 – 80 degrees . (Minimum 60 – 65
degrees) . Then remove the nozzle and purge material into a
waste container for 15 – 30 seconds . Clean the face of the
gun, insert a new nozzle and perform a test spray again .
7 . If problems persist call your Dow rep or Dow Technical service .
8 . While spraying, always watch for signs of unusual looking
foam . Troubleshoot as outlined above .
9 . Watch for any bubbles in the translucent hoses near the
gun and listen for any sputtering . This may be a sign of an
empty tank .
5 .2 INSTA-FLO™ Gun Operation
The InSTa-FlO Gun provides greater flow control and minimizes
waste when used properly . The following operating instructions ensure
maximum efficiency and performance of the InSTa-FlO Gun .
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 . To insert an unused nozzle, verify that the key slot on the
nozzle is in the down position . Push in firmly until the nozzle
ejector is seated over the back rim of the nozzle .
3 . To meter the InSTa-FlO ™ Gun, engage the trigger
one-third to one-half . This should be done sparingly
due to the ratio of the foam being affected .
4 . The life of a nozzle depends on elapsed paused spraying time
and chemical temperature . Replace a previously used nozzle
if the elapsed paused spraying time is exceeded using the
chart on the right as a guide .
This chart is for the cone and fan type nozzles . Other specialty
nozzles may have different elapsed paused spraying times .
5 . When spraying is completed, remove the used nozzle
by pushing down on the nozzle ejector .
6 . apply petroleum jelly to the face of the InSTa-FlO Gun .
7 . Reinsert the used nozzle . This provides an airtight seal
during storage .
Refer to INSTA-FLO™ Gun drawing, page A3
Section 6
Shut Down
1 . When shutting down the refill system for the day, leave the
cured nozzle attached to the gun to keep moisture from
penetrating the hoses .
2 . Shut off the a and B side valves on gun and the two sets of
valves on the chemical tanks for the a and B sides .
3 . leave all hoses attached .
4 . Shut off the main nitrogen valve at the nitrogen tank . Do not
adjust the regulator levels that were established during cali-
bration . These settings can be used until the chemical tanks
are empty or the nitrogen tank is replaced as long as there
are no big temperature swings .
Chemical Temp elapsed Paused
Spraying Time
70°F (21°C) 35 Seconds
75°F (24°C) 30 Seconds
80°F (27°C) 25 Seconds
85°F (29°C) 20 Seconds
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