Dow FROTH-PAK Refill Systems - Manual (Page 28)

dow Building Solutions
3 . Dispense chemicals in an appropriate container and
examine the chemical streams . If the streams are
equal, the problem existed in the nozzle . Continue
with steps 4-7 below . If the problem is not corrected,
the blockage exists in the system . Continue with
CauTIOn – below step 7 .
4 . Clean any chemical from the InSTa-FlO™ Gun face
using a rag .
5 . Insert an unused nozzle .
6 . Dispense chemical in an appropriate container .
7 . Check the quality of the foam . If the foam is good,
the system is ready to operate . If the problem is not
corrected, the blockage exists in the system .
(Continued from step 3)
CAuTiOn: When disconnecting chemical lines, always
cover the connections with a rag to minimize chemical
spray or spillage .
8 . Turn off the “a” and “B” lines with the in-line on-off
valves . The valve handles should be perpendicular to
the chemical lines .
9 . Depressurize the Gun/Hose assembly by pulling
the trigger, dispensing chemicals in an appropriate
container .
10 . Disconnect the InSTa-FlO Gun from the in-line on-off
valve using two adjustable wrenches .
11 . While holding the chemical line over an appropriate
container, carefully open the valve of the “a” hose
and dispense chemical into the container . Check the
flow . Repeat for the ‘B’ hose .
12 . If the flow was adequate from both hoses, the problem
was with the InSTa-FlO™ Gun/Hose assembly .
Discard the old InSTa-FlO Gun/Hose assembly and
replace with a new one according to steps 13-20 .
If a blockage persists, continue with step 21 .
13 . Connect the new InSTa-FlO Gun/Hose assembly .
14 . Tighten all connections with two adjustable wrenches .
15 . Verify that all chemical line valves are on . The valve
handles should be perpendicular to the chemical lines .
16 . Dispense chemicals in an appropriate container to
verify proper chemical flow .
17 . Clean any chemical from the face of the InSTa-FlO
Gun with a rag .
18 . 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 .
19 . Dispense chemicals in an appropriate container .
20 . Check the quality of the foam . If the foam quality is
good, the system is ready to operate . If problems
persist, go back to step 2 .
21 . Turn off the on-off valve located near the tank filter
of the blocked line .
22 . Turn on the in-line on-off valve of the blocked line
to depressurize the hose, allowing the chemical to
dispense in an appropriate container .
23 . Close the in-line on-off valve when the hose has
depressurized .
24 . Disconnect the obstructed chemical hose from the
on-off valve located next to the tank filter .
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