9. Re-install the rear and side shrouds. Re-connect the compressed air supply and electrical
power.
Figure 7:
Required Desiccant Amounts per Bed; Type 4X Desiccant (2 beds per unit)
W00000892
W00000893
Type 13X Desiccant
W00018050
W00018051
6-6 Replacing the Process Heater
Our dehumidifying dryers use Calrod-type heater elements mounted in a heater tube located in the
top rear of the cabinet. The wattage of the heater varies with model, voltage, temperature range,
etc., but the replacement procedure is the same.
If the process heater is mounted to the hopper, contact the manufacturer for the appropriate
replacement procedure.
Disconnect and lock out power before you replace heater elements!
Use the following procedure to replace the process heater:
1. Remove the bolts securing the process heater access cover.
2. Sketch the heater wiring configuration so you can properly re-wire the heater.
3. Remove the wires to the heater plate assembly being removed or replaced.
4. Remove the bolts securing the heater plate assembly, and slide out the assembly.
5. Remove the heater from the mounting plate by removing the large brass nuts and
washers.
Operation 55
