Profoto Pro-8a Generator Pro-8a 2400 Air - Manual (Page 6)

Pro-8a 2400 Air – Pro-8a 1200 Air
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Pro-8a 2400 Air – Pro-8a 1200 Air
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• OFF: No ready signal. This setting also disables the sound indicating that a switch is
pressed or a control is turned.
• DIM: The modeling light will be turned off when the generator is being charged, and
turned on again when the charging is completed. This setting also disables the sound
indicating that a switch is pressed or a control is turned.
• BEEP: A clear ”beep” will sound to indicate that the charging of the generator is
completed. This setting also enables the sound indicating that a switch is pressed or a
control is turned.
• BEEP-DIM: The modeling light will be turned off when the generator is being charged, and
turned on again when the charging is completed. A clear ”beep” will also sound to indicate
that the charging is completed. This setting also enables the sound indicating that a switch
is pressed or a control is turned.
Speed control
The versatile recycling speed settings make it possible to efficiently utilize the mains
power supply by adjusting and optimizing the maximum possible speed and load without
blowing fuses. The generator’s amperage load from the mains power supply corresponds
proportionally to the speed setting.
The Speed Control [18] is used to select one of four recycling speed settings:
• 25% The slow recycling speed is four times as long as the MAX recycling speed. This
alternative shall be selected when the generator is connected to a mains power supply
with weak fuses, when you are uncertain as to how well the mains power supply is fused
and when weak gas generators are used for charging. It may allow tree or four generators
to be connected to the same wall outlet or fuse group.1)
• 50x The fast recycling speed is twice as long as the MAX recycling speed. This setting
may allow two generators to be connected to the same wall outlet or fuse group.1)
• 75% The extra fast recycling speed is slightly longer than the extremely fast MAX
recycling speed. It reduces load by 25% and may prevent sensitive types of fuses to blow.
The recharge speed is anyhow extremely fast compared to other flash generators.1)
• MAX The extreme and fastest recycling speed. Only one Pro-8a can be connected to one
wall outlet or fuse group.1)
Ready lamp/Test function
The ready lamp and test button functions are combined.
Ready lamp [10] is illuminated when the generator is fully charged and ready to flash.
Test Button [10] is used to test that all light settings are correct and that the functionally is
as expected. When the Test Button [10] is pressed, the generator will flash and the Ready
Lamp [10] will turn off while recharging. When the recharge of the generator is completed,
the Ready Lamp [10] will be illuminated again.
Flash before ready
The ”Flash before ready” function makes it possible to flash before the recharging of the
generator is ready and fully completed. When a flash is released before the generator is
100% recharged a long ”beep” will sound, indicating an underexposed frame. Naturally
the flash light may not correspond fully to the set value. The underexposure of the frame
may be so small that it makes no significant difference, however it may be informative
to get the feeling of the maximum repetition rate. The underexposure frame may still be
usable if the catch of the moment was perfect.
Fan Cooling & Protection System
The Pro-8a generator is equipped with a very effective fan cooling to prevent over heating.
A microprocessor controlling and supervising the system is integrated for protection and
safety. Dual fans will normally operate in silent mode but will speed up automatically when
working in hot surroundings or continuously at higher power levels. Lower flash energy usage
and normal room temperature will slow down the fan speeds to be as silent as possible.
If there is risk for overheating of the generator, caused by abnormal external influence, the
protective system will automatically protect the generator from damage. The protective
system will slow down the recharging intervals and eventually the recharging will stop
completely. After a while, when the temperature has decreased sufficiently, the generator
will start recharging at a normal pace. This automatic protection will only interfere under
extreme conditions such as when the air vents are blocked.
The Pro-8a generator is designed to withstand up to 1000 full power flashes during one hour.
However it is not advisable to run harder than necessary due to the lifetime of the flash tube.
NOTICE
The air vents of the generator must never be blocked or covered in any way. Nor should the generator be operated in
an enclosed small space. Never store your flash equipment in a car on a hot and sunny day longer than 30 minutes.
Avoid storage of the generator close or below the freezing point for more than 30 minutes. A cold generator may
not work properly or may even brake and will lose capacity (flash output). There is also a risk of failure because of
condensation when a cold generator is moved to a warmer surrounding. Remember that the generator has a great
temperature storing mass and will not adapt to the indoor normal surrounding temperature until after 1–3 hours.
Never use a Pro-8a generator that has been stored in abnormal temperatures for more than 1 hour. A well insulated
case or transport box will prolong the time of storage in abnormal temperature to 2 or 3 hours. Never operate the
generator inside a case or transport box due to lack of ventilation. Never expose any flash equipment to wet or humid
environments or extreme electromagnetic fields.