GE HumiLab Operator's Manual page 67

cally, performs a cleaning cycle maintaining the mirror in optimum
condition. Figure 14, showing the Pacer cycle, illustrates the way
this feature operates.
The Pacer feature operates only when the BALANCE switch is in the
AUTO position. When the Pacer is in operation and contaminants
accumulate to a point where they can no longer be automatically
reduced, the "S" (Service) light will indicate that the mirror needs
cleaning.
Figure 14 — PACER® Cycle
Figure 15 shows the effect on contaminants of using the Pacer
cycle.
Before Pacer After Pacer
Figure 15 — contaminant Reduction Using the PACER® feature
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Appendix B — Humilab chilled mirror hygrometer details Page