Spare Parts And Maintenance - DuPont FROTH-PAK Manual

11 . When storing the system, and between work sessions, it is
best practice to leave chemical in the hoses, and to have all
valves closed . Leaving a hose open, or having air within
the hose will cause crystallization of the isocyanate and
subsequent hose blockage . If stored in a warm place above
60°F warm up time will be significantly reduced .

16.3 Spare Parts and Maintenance

The Arctic Pak is available as a complete system (hoses, heater
jacket and controller) which is DuPont part number GMID 328507 .
Also available for field support from your DuPont distributor are
the controller (GMID 328509), and replacement heated jacket and controller combination (GMID 328508) .
An internal replacement chemical hose may be made in the
field from four standard, unheated hoses using standard, steel
¼" JIC Male couplers to join them . Four hoses may be used from
two of the standard hose and Gun Hose Assembly Kits, GHA30,
which is DuPont part number GMID 158403 . It is, however, not
recommended to heat these hoses .
Alternately, heated replacement hoses to be used inside the
jacket may also be sourced from any Parker Hannifin distributor
as follows:
Isocyanate Hose:
The isocyanate hose is terminated at each end with Parker
Series 55¼" JIC Female Swivel fittings (carbon steel or stainless
steel only) . Red 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 .
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 .
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
™
containers by activating one hose at a time .
4 . Lay the hose reasonably straight with the hook-andloop
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 polyure-
thane 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 .
Section 17
Additional Information
The buyer assumes all risks as to the use of the material .
Buyer's exclusive remedy or any claim (including without
limitations, negligence, strict liability, or tort) shall be limited
to the refund of the purchase price of the material . Failure to
strictly adhere to any recommended procedures shall release
DuPont 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 . Additional copies of this manual can be downloaded
and printed from building . d upont . c om .
Gun into separate appropriate waste
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