If you have an older Balzers Pfeiffer Duo 1.5 mechanical pump that needs to be rebuilt and want to do it yourself, here is a link to a detailed procedure:
http://www.rtftechnologies.org/general/pfeiffer-duo15a.html
For parts or rebuilding of Pfeiffer Duo 1.5 mechanical and turbo pumps, here are some companies that we have used with success:
http://www.pchemlabs.com/services.asp
https://www.ajvs.com/new/product_info.php?products_id=12557&category_id=0
RBD Instruments’ proprietary technique for rebuilding the PHI 04-303 ion gun and 06-350 ion source filament assembly results in more stable sputter rates and longer filament lifetimes than other ionizers. The pictures below are actual 04-303 ion source filament assemblies which show the visible light emitting from the filaments. Note that the 3 post RBD ionizers have a much larger and more uniform hot spot than the 5 post PHI filament. In terms of performance, a more uniform hot spot results in a more uniform beam shape. In addition, even with the additional two unnecessary posts, the PHI filaments will still slightly warp out of position over time. That in turn changes the sputter rate of the ion gun, which can result in inaccurate depth profile data unless you re-calibrate your sputter rate frequently.
In short, the RBD ion source filament assemblies outperform the PHI filaments, last longer, and the cost 75% less than a new ionizer. So the next time your 04-303 or 06-350 ion gun needs a new ion source filament assembly, send it to RBD for a rebuild! You will save $$ and get the benefits of a longer lifetime ion source filament assembly and more stable sputter rates.
RBD carries exchange ion source filament assemblies so we can send you a rebuilt one and then you return your old one to us after you install the rebuilt ion source filament assembly.
Contact us for more information.
Most of the set screws used on older PHI optics are the Bristol set screw type. The main advantage to this drive system is that almost all of the turning force is applied at right angles to the fastener spline face, which reduces the possibility of stripping the fastener. For this reason Bristol set screw are often used in softer, non-ferrous metals. Compared to an Allen drive, Bristol set screws are less likely to strip for the same amount of torque. Bristol set screws come with 4 flutes on the smaller sizes and 6 flutes on larger sizes.
When working on optics such as ion sources, analyzers, specimen stages and so on it is not uncommon to strip the set screws when removing them. A trick that can help prevent striping is to use a small amount of isopropanol as a lubricant before removing the set screws.
Some sources for replacement Bristol set screws are –
Fasteners & Metal Products Corporation
Note that these set screws are not cleaned for UHV and so you will need to run them through a cleaning process before using them for UHV optics applications.
When using Bristol set screws you need to use Bristol spline drivers. A source for Bristol spline drivers is –
Bristol Wrench Company, Inc 4 Hershey Drive, Ansonia, CT 06401
Note that Bristol Wrench no longer sells individual spline wrenches, only in sets of 10. Good news is that you can get individual Bristol spline wrenches from McMaster Carr –