Flex TPO Для дома - Manual (Page 30)

Welding Preparation
The surfaces to be welded must be clean and dry. Check the membrane
overlaps to determine whether they have been contaminated with field
dirt. If the seam is contaminated, thoroughly clean the membrane with
the recommended cleaner. It is required that all installed membrane
seams be hot air welded the same day the membrane is installed.
Automatic Hot Air Welder Operation
Consult the welding machine manufacturer’s recommendations for
proper temperature setting and speed control of the equipment. The
temperature setting and speed setting vary with ambient temperature,
type of substrate and membrane thickness.
A test weld must be performed at the start of each welding session
to determine the proper settings for the machine. As a general guide
for automatic hot air welding the suggested starting setting is 1000°F
at 12’ per minute. Set up the welder and allow it to run for 5 to 10
minutes to warm up.
Position the welding unit with the guide handle pointing the same
direction the machine will move along the seam. Lift the overlapping
membrane and insert the blower nozzle between the 2 sheets of
membrane.
Immediately engage the machine drive to start the machine moving
and prevent over heating or burning the membrane. Guide the machine
along the length of the seam keeping the small guide wheel aligned
with edge of the top membrane sheet.
When the machine reaches the end of its run remove the blower
nozzle from between the overlapped membrane and stop the drive
mechanism. The portion of the seam at the beginning and end of the
run that could not be welded with the automatic welder must be
completed with the hand welder.
Test welds should be performed at the start of each welding session.
Weld 2 sample pieces of the membrane together. Allow the membrane
to cool to ambient temperature.
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