User manual BOWENS TRILITE

[. . . ] · Ensure that the flash head cable locking rings at the power pack or adapters are fully locked before use. Protect from heavy, sharp or hot objects, which may cause damage and replace damaged cables immediately. · Unplug the power pack from the electrical outlet when not in use. · Ensure that any extension cord used has a suitable current rating to prevent overheating. [. . . ] The Power Level Displays will flash "Overheat" warning while the overheat condition exists. NOTE: The overheat condition remains until the power pack reaches a safe operating temperature or the unit is turned off and allowed to cool. · Control Panel Does Not Light Up If the Control Panel does not light up when the unit is switched on, first check the AC power-cord connections and check to make sure the AC outlet is working. Under exceptional conditions of use or component failure, the Internal Fuse may blow. · Control Panel Lights Up But Ready Indicator Does Not Light Up If this happens, first confirm that the AC-line voltage is adequate and within the prescribed limits. Confirm that the Flash Thermal Reset Button on the Rear Panel is pushed in. Switch the unit off, wait a minute, push the button in and then switch power on again. · Modelling Lamps Are Not Working If all of the modelling lamps are not working, first check to see if the Modelling Thermal Reset Button on the Rear Panel is out. If this is the case, DO NOT RESET IT until you have checked the head(s) for blown bulbs and/or fuses. · Power Pack Triggers Erratically Check to see if the power pack is being triggered by another flash source by turning the photocell off. Head Socket `B' Head Socket `A' Fast/Slow Switch (Under Handle) Channel A Power Level Display Carry Handle Channel B Power Level Display Modelling Mode Selector Channel A Variator Overall Power Selector Channel B Variator Audio Switch and LED Test Button and Ready Indicator Photocell Window Photocell Switch and LED 4 www. bowens. co. uk www. bowens. co. uk 9 Getting Started Before first using your power pack or after an extended storage period, it is recommended that the unit be checked for basic operation as follows: 1. Be sure the protective cap is removed and the modelling lamp is fitted and switched on. Press the Test Button to: Flash Power Control The power pack is divided into two channels, A and B, and each is fitted with one head socket. An LED display for each channel indicates the available power in watt/seconds available at the head fitted to that channel. A single Overall Power Selector reduces the pack's total power by one or two f/stops and individual Channel Variator controls reduce each channel's power by a further three f/stops in 1/3-stop steps. The Overall Power Selector has settings for both Asymmetric (A/B) and Symmetric (A+B) modes. The selected power in Asymmetric mode is available independently from each channel whether or not any head is fitted in the other channel. The power available is controllable by using the appropriate Channel Variator and the associated display. The full selected power in Symmetric mode is only available from Channel A, providing that no head is fitted in the Channel B socket. The total power available is shown on the Channel A Power Level Display and is controllable by means of the Channel A Variator only. In general, the Overall Power Selector should be set to the lowest setting and the Channel Variator(s) set to the highest, consistent with the flash power and the distribution between heads required. This method provides the shortest flash duration for a given power output. Whenever the power levels are changed, the pack automatically dumps any excess energy. [. . . ] Intermittent extinguishes the lamps when the pack is fired and turns them back on again when the pack is 100% recycled and Ready Indicator lights up. This provides a visual indication that the pack has been successfully triggered and has recycled. Proportional sets the lamp brightness in proportion to the appropriate Channel Variator setting. Automatic 100% sets the modelling lamps of the head plugged into the channel with the highest flash power setting to 100% and the modelling lamps of the head plugged into the other channel in proportion to its variator setting. [. . . ]