Troubleshootin
g
Error Location Type Description
Cause Solution
Fluid is
overheated in
portions of hose
exposed to
an excessive
heat source,
like hot direct
sunlight. When
spraying begins,
overheated fluid
passes over the
FTS, triggering
this alarm.
Trigger point
is 27° F (15°
C) over hose
temperature
setting.
Shade exposed
hose from hot sun
or expose FTS t
o same environment
when at rest.
Coiled hose
creates
excessive heat
in a portion of
the hose. When
spraying begins,
the overheated
fluid passes over
the FTS.
Uncoil entire hose before heating.
Multiple sections of hose piled or
wrapped creates self-heating and
leadstothisproblem.
T4DH Hose High
Temperature
Hose
Fluid hose
insulation
missing from over
FTS, leading
to erratic hose
temperature
control.
Hose temperature is measured in the
A-side (red) fluid hose approximately
18 in. (0.5 m) back toward the
proportioner from the FTS fittings.
Confir
m that insulation is intact over,
at min
imum, the last 6 ft (2 m) of the
A-sid
e hose. If not, replace missing
insu
lation over the individual hoses.
(Wra
pping replacement insulation
over
the whole hose bundle is not
suffi
cient for proper hose temperature
cont
rol.)
Replacement insulation is available
from Graco or a hardware store.
333024N 33
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