6
Tr o u b l e s h o o t i n g
Tr o u b l es h oo t in g l 6- 3 5
R e p l a c i n g t he He a t er s
P r o c e s s He a te r Tub e (c o nt i nu e d )
6 While supporting the heater tube,
remove the hose and clamp at the top
of the heater tube.
7 Loosen the clamp holding the bottom
of the heater tube to the support brack-
et, and remove the heater tube from the
dryer.
8 Compare the markings on the outside
of the heater tube to ensure the new one
has the same voltage and kW ratings as
the original heater tube. This information
is on the end nearest the wires.
9 Secure the new heater tube to the support bracket with the clamp, with the wires
of the heater tube to the bottom.
10 Connect the hose and clamp at the top of the heater tube.
11 Connect the hose and clamp at the bottom of the heater tube.
12 Put the original insulation back on the heater tube. Apply duct tape to the seam
that was cut during removal.
13 W-200 - 400 models - Route the heater wires with the existing harness to the
control box. Put petroleum jelly on the tips of the cable, and push it through the
holes in the control box. Reference the wiring diagram, and connect the heater wires
to the solid state relays. Connect the high temperature switch wires to the quick dis-
connect near the heater tube.
W-150 models - Connect the heater wires and high temperature switch wires to
the quick disconnects near the heater tube.
14 Replace the side panel of the dryer.
15 Make sure the process heater fuses are not blown before applying power to the
new heater.
When configured as a
central dryer, there is no
process heater in the sys-
tem. Therefore, replac-
ing the process heater is
not applicable.
Insulation
Clamp
Clamp
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