Jimenez Lab Troubleshooting

ToF-AMS

• If you have no signal
  • Check all the connections
  • Check whether you see the pulser pickup when plugging the signal into an oscilloscope
    • If yes, the pulsers and preamplifier are working
    • If not, it could be: (a) lack of power for the preamp; (b) damaged preamp; (c) damaged pulsers; (d) loose connection
  • If you have some ions
    • Check the single ion with bitwise, this tests whether the MCP could be damaged

Gilibrator

• Unit will not turn on
  • remove flow cell
  • open back cover
  • unplug battery pack from main board
  • plug in power supply
  • If unit turns on battery pack is faulty, if unit does not turn on board is faulty.
  • Ordering battery pack: Reis environmental 1.800.677.7347 p/n 700560

SMPS

Impactor

• displayed sample flow > CPC flow
  • Critical orifice in impactor is probably clogged
    • remove impactor from SMPS and disconnect flow meter tubes
    • remove and clean impactor plate
    • carefully wash the critical orifice that's just upstream of the impactor plate
    • dry throughly and reattach impactor

3081 Column

• Changing Dacron Filter
• Won't reach target voltage
  • result of arcing in the top portion of the column
    • check connection of HV wire to brass head (spring connection point is a set screw that holds the head in place)
    • check HV wire insulation for any distress repair with heat shrink
    • check ground wire and make sure it is adequately seperated from the HV wire repair with heat shrink