User guide

Dow Building Solutions
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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