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12 Put petroleum jelly on the tips of the new heater wire leads to make it
easier to go through the holes in the back of the control box. Reference the
wiring diagram to reattach the heater wires and the two snap switch wires.
13 Put the insulation back on. Make sure to duct tape the seam that was cut
during removal.
14 Reattach the lower 2-1/2" (63.5 mm) hose and hose clamp.
15 Make sure the heater fuses are not blown before trying the new heater.
For D75 and D100 Dryers
4 Remove the hose clamp holding the heater tube to the dryer frame.
5 Remove the insulation from the heater tube by cutting the insulation in a
straight line from top to bottom.
6 Remove the hose and clamps at the top and bottom of the heater tube.
7 Remove the plugs or hose fittings toward the top end of the heater. These
will need to be installed on the new heater.
8 Reference the wiring diagram and / or trace the wires from the process
heater tube into the control box. Remove the wires from the relays and
terminal strips. Once disconnected pull the wires from the control box into
the dry housing toward the heater tube.
9 Check the ID on the side of the heater tube for kW rating and voltage.
The ID mark on the outside of the tube near the end with the lead wires.
Make sure the kW and voltage is the same as the replacement heater.
10 Reinstall the plugs or hose fittings toward the top of the heater tube.
11 Reattach the lower 2-1/2" (63.5 mm) hose and clamps to the top and
bottom.
12 Put the insulation back on. Make sure to duct tape the seam that was cut
during removal.
13 Install the hose clamp holding the heater tube to the dryer frame.
14 Put petroleum jelly on the tips of the new heater wire leads to make it
easier to go through the holes in the back of the control box. Reference the
wiring diagram to reattach the heater wires and the two snap switch wires.
15 Make sure the heater fuses are not blown before trying the new heater.
6-24 l Troubleshooting
Replacing the Heater
Process Heater (continued)
Central
When configured as a
central dryer, there is
no process heater in the
system. Therefore,
replacing the process
heater is not applicable.