Pub. No. OM-A-10E — April 2004 25
L. Tower does not pressurize fully. 1. Inlet pressure low.
2. Purge pressure too low.
3. Repressurizing period too short.
1. Calibrate and plot purge pressure
and reset.
2. Reset proper purge pressure.
3. Check timer sequence of
operation.
M. Excess desiccant dust.
NOTE: If the regenerating tower does
not pressurize fully, desiccant attrition
takes place at the time of tower switch-
over.
1. See K & L.
2. Excess flow due to greater
demand in process or addition of
extra compressors.
2. Check outlet flow.
N. Dewpoint Spike.
NOTE: Blower purge dryers may spike
during normal operation due to blower
cooling.
1. Excessive residual heat in newly
regenerated tower.
1. Lower heater thermostat settings.
Table 1 — Troubleshooting Guide for Regenerative Dryers, continued
Symptoms Cause Remedy
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