Heath Consultants Odorator Propane - Manual (Page 6)

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and held down. If the “L” fails to disappear, it may be an indication
of blower speed. The “L” indicates a speed problem, and if on, the
Odorator should not be used.
When it is time to replace the batteries, “LO BATT” will be indicated in
the upper left corner of the LCD when the READ switch is depressed
and held down.
The ODORATOR is designed and intended to be used in accordance
with the GPTC Guide For Gas Transmission And Distribution Piping
Systems, (49 CFR) 192.625 Subpart L dated 10-15-03, the American
Society For Testing And Materials Standard D 6273 - 08, and NFPA
58. Supply gas must be propane and of high quality. Blended or
mixed gases as sometimes found during peak shaving cannot be
tested using the ODORATOR.