Technical Specifications

Dow Building Solutions
Section 6
DO NOT breathe vapor or spray. Proper Personal Protective Equipment
and ventilation are required. See product SDS and Section 2 of this
manual for further information. Follow all precautions for product.
Re-Start-Up
1. Follow all requirements for a new kit including wearing all PPE,
and ensuring proper ventilation and isolation of spray area
are in tact.
2. Open the valves on the chemical tanks for the A and B sides.
3. Remove the cured nozzle that you left attached to the gun.
4. Spray into a waste container. Ensure that you have good flow
from both the A and B side hoses.
5. Clean the face of the gun. Attach a new nozzle.
6. Spray a test sample to ensure good quality foam.
7. Resume spraying.
Section 7
Troubleshooting.
Maintenance and after-use instructions.
The FROTHPAK™ Kit is virtually maintenance-free and many
problems can be corrected through simple troubleshooting
techniques. When troubleshooting, confirm that the system is
pressurized correctly, and that all chemical valves are in the
open position.
7.1 Temperature
Liquid material temperature can affect foam quality. If the Liquid mat-
erial temperature is below 65
°F (18 degrees C), poor quality foam
may result. The ideal temperature range is 7590 degrees F (2432
degrees C) , minimum 65 degrees F (18 degrees C). See Section 11,
Tank Heating.
7.2 Troubleshooting
Problem: Spray pattern becomes noticeably different (i.e. cone spray
changes to stream)
Solution: This may be caused by dispensing foam with a used nozzle.
Always inspect a nozzle prior to dispensing to make sure you
have an unused nozzle mounted in the INSTAFLO™ Dispenser.
Problem: Foam or spray pattern does not react properly
Solution: Replacing the nozzle will usually correct the problem. If the
problem persists and foam is friable or brittle, the foam is “ISO” rich,
and a partial blockage of the “POLYOL” side exists. If foam remains
soft or mushy, the foam is “POLYOL” rich and a partial blockage of
the “ISO” side exists. If foam starts to become liquid, then there is a
total blockage of one side. Remove the nozzle and carefully activate
the dispenser into a waste container. Two chemical streams of
approximately equal volume should flow. If streams are unequal, a
blockage has occurred. Shut off the tank valve on the side that is
flowing properly and activate the trigger full force for 15 seconds.
Once the blockage is freed, turn off all tank valves. Clean any
chemical from the face of the INSTAFLO
™
Dispenser with a clean rag
and reapply petroleum jelly. Insert an unused nozzle, open all valves
and dispense a test shot into a waste container. After curing, check the
foam quality. If blockage occurs again, stop foaming, turn off chemical
tank valves, eject the used nozzle, and release chemical line pressure
by activating the dispenser into a waste container. Slowly loosen the
hose connections at the tank valves. Clean chemical from the threads
and replace with a new INSTAFLO
™
Dispenser/Hose Assembly.
(Go to the Answer Center at www.sprayfoamatdow.com and follow the
troubleshooting tips for the FROTHPAK
™
Foam System.)
Reapply petroleum jelly to the face of the INSTAFLO
™
Dispenser
with a clean rag. Insert an unused nozzle, open all valves and dispense
a test shot into a waste container. After curing, check the foam quality.
If the replacement of the INSTAFLO
™
Dispenser/Hose Assembly
does not solve the problem, please contact our technical staff
at 866583BLUE (2583). Note: A variety of foam dispensing
nozzles are available with alternative spray patterns and various
dispensing rates.
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