Desiccant Housing 234404, Series B
NOTE: Always install a moisture filter, to remove bulk fluids, and a coalescing filter, to remove oil, upstream of the desiccant housing. Desiccant coated with oil will not absorb moisture.
Desiccant Changeout
NOTE: Desiccant beads are
The desiccant gradually changes color from blue to pink, indicating it has absorbed moisture to the saturation point and needs to be regenerated or replaced.
•To regenerate Silica Gel desiccant, heat desiccant for 4 hours at 275°F (135°C).
•To replace desiccant, order desired part no. from the following chart.
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| Color | Color when |
Desiccant Part No. | when fresh | saturated | |
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288810 | Silica Gel (5 lb) | Blue | Pink |
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288823 | Silica Gel (four 5 lb | Blue | Pink |
cans) |
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Desiccant Housing Disassembly
1.Follow the Pressure Relief Procedure, page 8.
2.Unscrew the metal collar holding the desiccant bowl to cover. Remove bowl and collar.
3.Dump old desiccant out of bowl.
4.If the pressure drop across the dryer has become unacceptable, the bronze element in the bottom of the bowl may be clogged. To remove clog:
a.Place a blow gun at the top of the tube and blow air through the flow tube.
b.If element replacement is needed: disassemble flow tube from the bowl by removing the end cap and nut from the bottom of the bowl.
c.Turn the flow tube (hand tight) counter clock- wise to remove it, then replace elements.
d.Reassemble in reverse order.
Maintenance and Repair
5.Refill bowl with new or regenerated desiccant. See Desiccant Changeout. Desiccant Housing 234404 holds 5 lb. of desiccant.
6.Reassemble bowl to cover, making sure that
289189
288794
289186
288793
288795
289187 (2) 289188
Part No. | Description |
288793 | Flow Tube Assy., includes flow tube, nut, |
| |
289186 | |
288794 | Gasket |
289189 | |
289187 | Filter Element |
289188 | |
288795 | Sight Glass |
288810 | Desiccant, silica gel (5 lb) |
288823 | Desiccant, silica gel (four 5 lb cans) |
309921N | 9 |
