GCMS QP2010 PlusIon Source Removal, Cleaning and Assembly

Bill Dougherty – July 19, 2010

QP-2010 Plus – Removal of ion source parts for cleaning

REMOVAL STEPSRemove the 5 wire connectors from both filaments and the repeller.Remove both filament retaining nuts (round nuts).Remove Filaments.Loosen 1.5mm MS Interface set screw.Move spring loaded MS Interface mating piece to the right away from the ion box.Insert the ion source removal tool.Loosen both ion box retaining screws.Remove ion box.Remove 4 wire connectors for ion source heater.Remove spring loaded MS Interface mating pieceRemove both lens stack retaining nuts (six sided nuts).CAREFULLY slide lens stack out and off of posts. Be careful not to damage wires on left. You must tilt lens stack to clear the MS Interface on the right.

© 2010 SHIMADZU2

QP-2010 Plus – Removal of ion source parts for cleaning

Remove the lower filament wire connectors using tweezers or small needle nose pliers.

Release your grip from the connector once it is removed from the pin, otherwise you might unnecessarily bend the wire. Carefully push the wire to the left without holding the crimp pin.

© 2010 SHIMADZU3

QP-2010 Plus – Removal of ion source parts for cleaning

Remove the repeller wire connector using tweezers or small needle nose pliers.

Release your grip from the connector once it is removed from the pin, otherwise you might unnecessarily bend the wire. Carefully push the wire to the left without holding the crimp pin.

© 2010 SHIMADZU4

QP-2010 Plus – Removal of ion source parts for cleaning

Remove the upper filament wire connectors using tweezers or small needle nose pliers.

Release your grip from the connector once it is removed from the pin, otherwise you might unnecessarily bend the wire. Carefully push the wire to the left without holding the crimp pin.

© 2010 SHIMADZU5

QP-2010 Plus – Removal of ion source parts for cleaning

Loosen and remove the upper and lower filament retaining nuts (round nuts) using a flat blade screwdriver.

Remove the filament nuts using your fingertips or tweezers.

© 2010 SHIMADZU6

QP-2010 Plus – Removal of ion source parts for cleaning

Remove the upper and lower filaments. Carefully hold by their ceramic block and pull straight out.

When removing, place the filaments so that you can remember which is from the #1 position (upper) and which is from the #2 position (lower).

© 2010 SHIMADZU7

QP-2010 Plus – Removal of ion source parts for cleaning

Loosen the MS Interface Allen set screw with the 1.5mm Allen driver.

The set screw loosens by counterclockwise rotation. Do not unscrew enough for the screw to fall out, just enough to be able to move the spring loaded MS Interface mating piece to the right.

© 2010 SHIMADZU8

QP-2010 Plus – Removal of ion source parts for cleaning

With a small pair of needle nose pliers, grasp the plate attached to the MS Interface mating piece. Slide the piece to the right and rotate the plate all the way downward so that it is on the right side of the lens stack bracket, holding the spring loaded interface piece to the right.

© 2010 SHIMADZU9

QP-2010 Plus – Removal of ion source parts for cleaning

Insert the removal tool into the lower right corner hole in the ion box and thread the tool clockwise until it is finger tight. This will hold the repeller assembly together with the ion box when it is time to remove them.

© 2010 SHIMADZU10

QP-2010 Plus – Removal of ion source parts for cleaning

With the removal tool holding the ion box and repeller assembly together, loosen each of the two captive screws from the heater block assembly bracket behind the ion box. First the left hand screw, and then while holding the box in place with the holder, loosen the upper right screw. The box will come loose when loosening the second screw so use the removal tool to hold the box in place until you are ready to remove it.

© 2010 SHIMADZU11

QP-2010 Plus – Removal of ion source parts for cleaning

Once both of the captive screws are all the way loose then carefully pull the ion box – extractor assembly straight out towards you. The captive screws do not come all the way out of the repeller assembly, they just unthread from the heater block assembly. Notice them hanging out in the picture.

© 2010 SHIMADZU12

QP-2010 Plus – Removal of ion source parts for cleaning

This next step requires the most patience and skill so that the wiring of the ion source heater and temperature sensor is not damaged. Please be most careful, moving the wires as little as possible while removing them from the posts. Damage to the wires would require replacement of the ion source heater block assembly. Since there are 2 wires for the ion source heater, shown to the left, it is best to alternate back and forth sliding off the connectors. This gives the least amount of wire bending which avoids stress and possible breakage.

© 2010 SHIMADZU13

QP-2010 Plus – Removal of ion source parts for cleaning

Again please be most careful with the temperature sensor wires, shown to the left, moving them as little as possible while removing them from the posts. Like the heater wires, there are 2 wires for the temperature sensor, and it is best to alternate back and forth sliding off the connectors. The temperature sensor wires are single more fragile wires. The heater wires are double twisted wires. The temperature sensor wires have a clip to hold the insulator closest to the sensor because they are more fragile than the heater wires.

© 2010 SHIMADZU14