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Author
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Topic: Lamp house wiring for super lumex 1600 lamphouse
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Dave Macaulay
Film God
Posts: 2321
From: Toronto, Canada
Registered: Apr 2001
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posted 07-28-2018 09:08 AM
The rectifier will have a 220V power input, that's pretty obviously where you connect the AC power: two hots and a ground. The terminal block has numbers 2,4,5,6, and 3. 3 isn't used for a simple hookup, that's for automation. You just connect 2, 4, 5, & 6 to the same number terminals in the lamphouse, 16ga wire is good. There is a circuit breaker on the rectifier for the lamphouse power, 5A I think. It pops up on overload. The rectifier supplies 120VAC on 2 and 4, from an isolation transformer you can see in the rectifier if you know what it looks like. That runs the lamphouse fan and ignitor (if it's the AC type, there are also DC ignitors that work off the lamp voltage). 5 and 6 are the rectifier on/off control, 120V on these will energize the power contactor and turn on the lamp power section of the rectifier. DC power lugs should be pretty obvious in the rectifier. In the lamphouse, "+" goes to one end of the shunt (metal thing with brass end blocks connected with metal plates) and "-" goes to the AC ignitor. Possibly this is different with a DC ignitor? The AC one is a black box with a pushbutton. The DC one has no button. Once connected, lamped, and powered: with lamphouse power switch OFF everything should be quiet, the rectifier may hum quietly. Turn the MAN/AUTO switch to AUTO. Turn the lamphouse ON. The fan should start but the rectifier should be quiet. Turn to MAN and the rectifier should make a click and its fan should start. If the rectifier is OK, the lamphouse airflow switch has closed, and the autostrike card in the lamphouse is the correct one for your rectifier... you should hear a zapping (AC ignitor) or clicking (DC ignitor) sound and the lamp should strike. If so, immediately check the lamp current on the meter and confirm it is correct for your lamp... overcurrent will damage the lamp fairly quickly. Note on switchers: there are two special fuses. These are expensive and can be hard to find. If you want to check them, power the unit off and wait a long time: at least half an hour in my opinion. Taking them out for testing and reinstalling them will instantly blow at least one if you don't wait. With the AC ignitor you can press the button and force it to try stiking the lamp, don't hold the button down a long tine... 1/2 second should do it if the lamp is going to start. If it flashes and goes out immediately probably the current is set too low. From your description you probably have a switching rectifier... if not it will be very heavy and difficult to move as well as having no suitcase type lifting handle. Current control varies with the switchers, but they all want an external current control potentiometer. There may be one in the lamphouse but as far as I know this is just for the "TMI" (prone to meltdown) very early Strong switchers and isn't correct for the later types. There should be a connector for the potentiometer - wiring and value are in the manual. There is an internal pot as well for setting maximum current, so a hamhanded projectionist couldn't crank a 1kW lamp up to 4kW. Without the external control the switcher will run at minimum current, possibly too low to start a lamp. Note that there is a variety of adapters for lamps, you must have the right one to get the arc near the mirror focus. Sound... You need a light source and a working reader. Simplest is a tungsten exciter lamp and "solar cell" pickup - requires a DC exciter lamp supply. A stereo cell has 3 connections for ground (to the centre of the chip) and L/R (on the outer edges). Wire it up with shielded cable to the processor: slide a card through the gap between drum and sound lens ad you should hear a pop. That proves it works, so adjustment will get you the best sound possible. Note that exciter lamps will not give anywhere near decent sound with newer prints that have cyan sound tracks, old film with black sound tracks will be good. A red LED or laser reader is required for cyan track prints. If you have a red LED or laser reader you need to check its manual for correct power and wiring requirements. If you have a Jax-Lite red LED source replacing the exciter lamp and a normal reader (sound lens and solar cell) ... good luck. These were marginal at best. A special pre-amp is needed on the cell signal and if you don't have that you're screwed.
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