User manual BOWENS DUO 2400

[. . . ] ALWAYS ensure that any extension cord used has a suitable current rating to prevent overheating. NEVER replace the fuse with one of a different type or rating. See Specification for correct value/type of fuse. ALWAYS avoid placing AC power cords and Flash Head cables where they can be tripped over. [. . . ] Overheat protection which protects the unit in the event of extended periods of continuous flashing and also in the unlikely event of failure of the cooling fan. EMC (Electro-Magnetic Compatibility) filters fitted. Power Supply Connection The Packs are designed to operate on an alternating current (AC) supply of 200 to 253 Volts, 50 Hz. The Packs must NEVER be connected to any direct current (DC) supply. The Packs conform to current standards which require connection to a properly grounded power supply. The 3 core power cord supplied with each Pack is colour coded as follows: Live (L): Neutral (N): Earth (E): Brown Blue Green/Yellow If a moulded plug is not fitted it is essential that all 3 wires are connected to the correct plug pins in accordance with the above colour code and that the cable is securely clamped in the supply plug. AC Power Switch The AC Power switch connects power to both the flash and modelling circuits. The switch is illuminated green when `ON'. ALWAYS switch `OFF' the unit before plugging or unplugging Flash Heads, changing fuses or modelling lamps. Circuit Protection Protection of the Modelling circuitry is by means of a 20mm fuse mounted on the control panel of the Pack. The fuse is rated at 15 Amp (T) and should never be replaced with a fuse of a different type or rating. -7- Protection of the Flash circuitry is by means of a Circuit Breaker mounted on the control panel of the Pack. This will operate under extreme conditions of use and can be manually reset after a short period of cooling by depressing the button until it locks down. FAST/SLOW Charge Switch The `FAST/SLOW' switch should be set to `SLOW' if the current capacity of the AC power supply is limited or fast recycling is not required. Switching to `SLOW' will reduce the current drawn from the supply by approximately 1/3rd. It should be noted that switching to `SLOW' charge will also extend the charge times at maximum power - See specifications for details. Flash Heads The Packs are designed to be fitted with one or two DUO-LITE Flash Heads (BW-3015), with a maximum modelling lamp rating of 650W. To fit or remove a Flash Head, first ensure that the Pack is switched off and disconnected from the supply. To fit a head, insert the tab on the front of the Flash Head plug into the socket and then press down firmly on the cable entry end to ensure latched retention. To remove a head, press the spring latch away from the plug and lift from the cable entry end. Heads from the BOWENS 220/240V QUAD system may be used with the Pack but with the following limitations:1. A 1. 5k QUAD Head will only operate in combination with another head, of any power rating. The Pack is designed not to charge if the total power rating of the heads fitted is less than that of the Pack. For detailed information on the operation of the heads, general maintenance, flash tube and lamp replacement, and accessories available, please refer to the appropriate Instruction Manuals supplied with the head. Flash Power Selection/Indication By using the two Flash Head sockets and associated controls, asymmetric and symmetric combinations of flash power are available from one or two Flash Heads. The `POWER' switch sets the TOTAL MAXIMUM flash power available from the Pack. The MAXIMUM power selected, 600, 1200 or 2400W-s is shown on the digital display and represents a coarse control range of 2 f-stops. This power can be made available from EITHER or BOTH sockets depending upon the setting of the `COMBINE/ISOLATE' switch. The `COMBINE/ISOLATE' switch in combination with the number of Flash Heads fitted, gives a further f-stop adjustment. [. . . ] In this condition the Circuit Breaker button will project from the panel and may be manually reset after allowing a short cooling period. Under certain conditions this may also be combined with operation of the thermal cut-out. A thermostatically controlled fan senses the internal temperature within the Pack. Under normal conditions of use the fan is unlikely to operate but when the Pack is used heavily the fan will cut in to lower the internal temperature allowing many more shots to be taken. [. . . ]