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| pld:start [2014/08/06 10:59] – bethany | pld:start [2014/08/06 11:08] – bethany |
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| //Thermionics chamber//: The Thermionics chamber is set up so that in event of a power failure, the valves between the roughing and turbo pumps will remain closed and the pumps will not turn back on when power is restored. | //Thermionics chamber//: The Thermionics chamber is set up so that in event of a power failure, the valves between the roughing and turbo pumps will remain closed and the pumps will not turn back on when power is restored. |
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| If you discover that the power has gone out while the pressure is still fairly low (10<sup>-3</sup> Torr), you can use {{:pld:thermionicsreset.pdf|these instructions}} to pump the system down. If the pressure is too high, then start the system up normally after restoring power to the pumps and TMP controllers (toggle switch up on silver panel, reset buttons on black panels - check fuses if nothing happens). is a schematic for reference | If you discover that the power has gone out while the pressure is still fairly low (10<sup>-3</sup> Torr), you can use {{:pld:pldthermionicsreset2014.pdf|these instructions}} to pump the system down. If the pressure is too high, then start the system up normally after restoring power to the pumps and TMP controllers (toggle switch up on silver panel, reset buttons on black panels - check fuses if nothing happens). Here is a schematic for reference.{{:pld:control_tower.gif|}} |
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| The Edwards roughing pump on the main chamber frequently fails to start. If this happens, unplug it from the gray power strip and plug it directly into the wall. Let it run for a few minutes and then plug it back into the power strip and try to turn it on again. | The Edwards roughing pump on the main chamber frequently fails to start. If this happens, unplug it from the gray power strip and plug it directly into the wall. Let it run for a few minutes and then plug it back into the power strip and try to turn it on again. |
