INFICON MicroFID II Portable Flame Ionization Detector - Manual (Page 23)

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HOW TO USE THE CHARGER
The Charger is started by connecting the battery pack to the charger. Once connected, the indicator LED
will start Orange, for the Initialization and Analysis Phase, before switching to Red for the Fast Charge
Phase. When the batteries are fully charged, the charger will go into a top-off charge mode before it goes
over to trickle charge mode. During top-off charge, the LED will be Green with short intermittent Orange
light. When the top-off charge is completed, the charger will go into trickle charge mode and the LED will
be Green. The charge current is now reduced to a safe level, which allows the charger to stay connected
to the NiMH batteries without damaging the battery. If the battery voltage is far below normal, the charger
will cut off the fast charge current and go to trickle charge mode. The LED will then indicate ‘error’ by
flickering Green and Red light. If the mains is turned off, the charger will reset and start a new charge
cycle if the mains is turned on again. If new batteries are to be connected, the charger must idle for
approximately 15 seconds to make sure all parameters in the microprocessor have been reset. The LED
changing to Orange light shows this and a new charge cycle can begin.
.
CHARGE CYCLE AND LED INDICATIONS
LED MODE
Orange Battery not connected
Orange Battery initialization & analysis
Red Fast Charge
Green with intermittent orange flash Top-off charge
Green Trickle charge
Alternating red-green Error
Table 1. Battery Charger Indications
With mains connected, the LED will be orange the first 5-7 seconds, and will be orange when the
initialization and analysis starts. If a battery is connected, the actual charging will start a few seconds later
when the LED changes to red.
CAUTION: Use only Battery Charger P/N 1201221 to charge the MicroFID II.