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Cabinet Series Dehumidifying Dryer 41
Figure 7:
Required Desiccant Amounts per Bed; Type 4X Desiccant (2 beds per unit)
Dryer Large bead (Type 4X) Small bead (Type 4X) Total per bed
CFM Part no. lbs. Kg Part no. lbs. Kg lbs. Kg
90 3.0 1.362 21.0 9.534 24.0 10.896
100 3.0 1.362 21.0 9.534 24.0 10.896
150 9.0 4.086 30.0 13.620 39.0 17.706
225
W00000892
9.0 4.086
W00000893
30.0 13.620 39.0 17.706
Type 13X Desiccant
Dryer Large bead (Type 13X) Small bead (Type 13X) Total per bed
CFM Part no. lbs. Kg Part no. lbs. Kg lbs. Kg
90 3.0 1.362 21.0 9.534 24.0 10.896
100 3.0 1.362 21.0 9.534 24.0 10.896
150 9.0 4.086 30.0 13.620 39.0 17.706
225
W00018050
9.0 4.086
W00018051
30.0 13.620 39.0 17.706
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.
WARNING!
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.
6. Re-install the heater and heater plate assemblies in reverse order. Install new heater
gaskets and securely tighten all fasteners.
Caution! Heater loops should not touch each other. “Hot Spots” lead to premature
heater failure!
7. Reinstall the wires based on the sketch you made earlier.
8. Secure the heater access cover.