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– RETRO 2 - FAQ's
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WHAT IS THE INPUT VOLTAGE RANGE? - 1.0 to 7.0VDC
maximum.
WHAT STANDARD BATTERY PACKS WILL
IT WORK WITH? - FX2, FX3, FX4, FX5, and OLDHAM.
WHAT
BATTERY COMBINATIONS CAN YOU USE? - Alkaline: 1 to 4 cells or 4.5V
flat pack, NiCAD / NiMH: 1 to 5 cells, Lead Acid: 2 - 6V, Single Cell Li-ION
3.7V.
ON THE OLDHAM, CAN I STILL CHARGE VIA
THE HEAD SET? - Yes, there are no modifications made to the
connections for charging.
DO I HAVE TO MAKE
ANY PERMANENT MODIFICATIONS TO THE CAP LAMP? - No, the unit is a
seamless retro fit, if required you can revert to the original configuaration,
just make sure you keep the parts removed. It is good practice to keep the
original parts removed as part of your underground backup lighting
gear.
IS IT REGULATED? - Yes, you
will get full power performance from 2.0 to 7.0V input. If the input voltage is
above 6.0V then on the lower power settings you will get more light output, see
Light Output
WHAT LED's DOES IT USE? - 2 x 1W Seoul P4's at 100
lumens each typical. Total, over 200 lumens.
WHAT IS THE SPREAD OF LIGHT? - 10 degrees for both
LED's.
HOW LONG WILL IT RUN FOR?
- Due to the switch mode power supply every last drop of power can be used in
your battery pack, see Run Times for
estimated times.
HOW DOES IT KEEP
COOL? - There is a heatsink on the back of the unit.
DOES IT HAVE A TEMPERATURE MONITOR? - Yes, if the
unit gets too hot then the power will reduce with an audio warning, once cooled
down it will revert to its original setting. The unit cannot be damaged in this
way.
DOES IT HAVE ANY ENVIRONMENTAL
OPERATION LIMITS? - When used in normal UK mines and caves the
ambient temperature is sufficiently low to keep the unit cool over all power
modes, in some cases if running at maximum power and used in confined places or
in warmer underground conditions the unit will reduce power. If used on the
surface in warm weather it will eventually reduce power and go into thermal
management mode.
WHY DOES IT
OVERHEAT? - The unit can overheat in some conditions because there is
limited space inside the cap lamp and so this reflects on the size of the
heatsink used and hence the heat that can be dissipated. Caplamp cases where
designed in the days when high power LED's did not exist and so this was not a
factor to consider. This is the reason that the unit has a temperature
monitor.
DOES IT HAVE A LOW BATTERY
INDICATOR? - Yes, when the unit cannot supply the output power
selected it will give an audio warning.
IS
IT WATERPROOF? The unit is sprayed with a military silicon conformal
coating which will protect it from moisture. It is as waterproof as the caplamp
you put it in.
WHAT IS THE LIGHT OUTPUT
LIKE? - The light is more like daylight and not yellow as you get
with a filament bulb. The wider beam illuminates more of an area especially at
your feet, to the left and right of your field of view while still maintaining
a reasonable beam.
WHAT IS A GOOD LIGHT
LEVEL TO USE? - Everyone has their own preference and it is also
dependant on what battery pack you have and how long the trip is. 1W mode
provides an excellent all round light level, for long multi-day trips you can
easily get away with 0.3W mode. If you like light then use the 2W
mode.
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