pro master FL190, User Manual, Page: 36 / 40

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• Do not clean the flash with agents containing corrosive or flammable substances.
Also, do not store or use the flash in flammable conditions.
• To avoid overheating and degrading the flash tube, do not fire more than 20
continuous flashes in rapid sequence. After 20 continuous flashes, allow a rest
period of at least 10 minutes. If you fire more than 20 continuous flashes in rapid
sequence and then fire more flashes in short intervals, the internal overheating
prevention function may be activated and the recycling time will increase to about
8 to 20 seconds. If this occurs, allow a rest time of about 15 minutes and the flash
recycling time will return to normal..
• If you use a commercially available sync cord to connect the camera to the flash
PC terminal, be sure to set the flash zoom manually for proper coverage.
• In the Multi Mode (stroboscopic flash), the camera’s shutter should remain open
until the flash completes the number of flashes that have been set. The shutter
speed to set on the camera is calculated by Number of flashes ÷ Firing frequency
= Shutter speed. For example, if the number of flashes is 10 and the firing
frequency is 5 Hz, the shutter speed should be at least 2 seconds.