Graco 226-991, Instructions-Parts List Manual

Page: 7 / 24

9 . Assemble the main heated hoses
a . Connect the corresponding fluid hoses of each
50 foot (15.2
assembly. See Fig 2.
b . A few inches back from the heat tape connec-
tors, bend the heat tape ON BOTH SIDES OF
CONNECTORS to take up slack. See Fig 2.
Then couple the heat tapes.
CAUTION
Strain on the heat tape connectors when the hose
is in service, causes wires to pull loose, and the
heat tape will not function. To prevent strain on
the wires, you must bend the heat tape to take up
the slack on both sides of the connectors.
Never wrap heat tapes around the hoses as this
also causes strain on the connectors.
c .
Cut the air hose to a length that
will be easy to couple to the next air hose.
d. Attach a coupling to the air hose See
Fig 3.
male end of the sleeve over
.
Grease the barbed end of the stud (19) and
push it into the hose until it seats properly.
Tighten the sleeve until it bottoms on the
fitting.
e. Connect the air hoses.
f.
Check the continuity of the heat tapes.
Use an ohmmeter to check the electrical
resistance of the two outer prongs of the
connector
which attaches to the
heated hose control cable Refer to
Fig 4. The resistance for the various
lengths of coupled hose assemblies is given
in the chart below.
\
Coupled Hose Length
315 feet (91.4
Resistance Range-
11-15 ohms
215 feet (60.9
20-25 ohms
115 feet
37-46 ohms
65 feet (20.0
ohms
50 feet (15.2
84-124 ohms
Between the middle and outer prong of&e-
connector, the resistance should be more
than 1
If it is less, there is a fault
in one of the connectors or the heat
tapes. A fault will cause the Ground Fault
Interruptor in the Foam-Cat Heated Hose
Control to shut off the electric power to the
hose. If there is a fault, check each 50 foot
(15.2
hose section individually and
replace the faulty section.
Check the continuity of the middle wire of
the connector from one end of the
coupled hoses to the other. The resistance
should be less than 10 ohms.
16
HEAT TAPE
2
I
‘Fig 3’
Fig 4
Check the continuity of the whip hose be-
tween the two outer prongs and then be-
tween the outer and the middle prongs of
the exposed connector as instructed in
steps el and
above. The resistance be-
tween the outer should be
300400 ohms.
g . Connect the whip hose to the main hose
assembly.
Connect the corresponding fluid hoses.
Connect the hose electrical connector to
the control box cable. See Fig 5, page 7.
Connect the air hoses. No alteration is
needed. Do not connect the hoses to the
gun yet.
h . Check to be sure that all hose connections are
securely tightened. Do not tape the insulation
tubing yet!
6