Dow FROTH-PAK Refill Systems - Manual (Page 34)

dow Building Solutions
Section 17
Warranty
The Dow Chemical Company warrants only that the product shall meet
its specifications . This warranty is in lieu of all other written or unwrit-
ten, expressed or implied warranties and The Dow Chemical Company
expressly disclaims any warranty of merchantability, or fitness for a par-
ticular purpose . The buyer assumes all risks as to the use of the material .
Buyer’s exclusive remedy as to any breach of warranty, negligence or
other claim shall be limited to the refund of the purchase price of the
material . Failure to strictly adhere to any recommended procedures
shall release The Dow Chemical Company of all liability with respect to
the materials or the use thereof . The information herein is not intended
for use by non-professional designers, applicators or other persons
who do not purchase or utilize this product in the normal course of
their business .
WARninG: Water reacts aggressively with isocyanate.
Reactions within a confined space such as within a hose may
present a safety concern. even small amounts of water vapor
may cause a blockage or an adverse reaction. Water carried
within the polyol hose to the point where blending with
isocyanate occurs must be avoided.
Polyol Hose:
The polyol hose is terminated at each end with Parker Series 55¼” JIC
Female Swivel fittings (carbon steel or stainless steel only) . Blue end of
hose color coding shall be maintained using colored tape, or a colored
heat shrink sleeve as used in the electrical industry, or by other means .
Fittings shall be crimped in place using Parker approved tooling and
procedures . The resulting assembly shall be pressure tested at 500 psi
without using water internally to the hose assembly .
To replace the internal hose or hoses:
1 . Close chemical tank valves, and tank on-off valve .
2 . Close nitrogen valves and relieve system nitrogen pressure .
3 . Carefully and completely bleed the chemical from
lines through the InSTa-FlO Gun into separate
appropriate waste containers by activating one
hose at a time .
4 . lay the hose reasonably straight with the hook-and-
loop seam upwards, as this will greatly help the hose
exchange . unfasten the jacket from around the hoses
by parting the hook-and-loop strips which hold the
jacket in place . This is most easily accomplished with
two or more people .
5 . Verify there is no pressure remaining in the hoses and
that the tank valves are closed . lay the new hose along
the old one in the open jacket . Cover the connections
of the old hose with a rag and remove the hose from
the tank end . Cap the old hose to reduce potential for
spillage . Connect the new hose to the tank end .
6 . Repeat the procedure, using a rag, for the dispenser
end of the hose .
7 . Remove the old hose from the jacket by clipping the
cable ties and lifting it away . Discard the old hose
using an appropriate waste stream as you would for
other polyurethane waste products .
8 . Re-tie the new hoses about every ten feet to each other
using cable ties . This helps in handling and coiling the
hose later .
9 . Re-close the hook-and-loop strips, bringing the heated
jacket up evenly around the paired hoses .
10 . Re-establish the system to the operational state using
the installation, pressurization, calibration, and other
procedures found in this manual .
26