Fully Refurbished Pfeiffer Vacuum TMH 520 Turbo Pump, DN 160 ISO, PMP02420 Overview: The Pfeiffer Turbomolecular Pumps TMH 520 and TMU 520 may only be used for the purpose of generating vacuum. The turbopumps may only be used to pump those media against which they are chemically resistant. For other media the operator is required to qualify the pumps for the processes involved. If the process produces dust, the maintenance intervals must be specified accordingly and sealing gas must be used (only for version ”P”). The Turbomolecular Pumps TMH 520 and TMU 520 may only be operated with a PFEIFFER Electronic Drive Unit and relevant cables. The turbopump must be connected to a backing pump. The pumps have a free wear permanent magnetic bearing at high vacuum side and oil lubricated ceramic bearings at the backing side. The TMH and TMU models are identical in terms of design. They only differ in their intake flange. Technical Data: Pumping Speed (l/s): Compression Ratio: - N2: >1012
- He: 5 x 107
- H2: 5 x 106
Final Pressure (mbar): - with Rotary Vane Vacuum Pump (mbar): 5 x 10-11
- with Diaphragm Vacuum Pump (mbar): 5 x 10-11
Unit is fully rebuilt and comes with a FULL 12-MONTH WARRANTY! PN00162 AJVS Service and Repair Information:  Pfeiffer Vacuum TMH 520 Turbo Pump Repair A & J Vacuum Services provides repair service for all types of High Vacuum equipment. We perform Turbomolecular Pump repair, Turbo Pump Repair, Dry Pump repair, Vacuum Pump repair, Mass Spectrometer repair, Rotary Vane Pump repair, Vacuum Booster repair, and Leak detector repair. Our highly trained technicians have years of experience and guarantee the highest quality service. Due to our confidence in the quality parts and service we guarantee 6-12 month warranty for parts and labor. We operate at our own full service repair facility in Clifton, NJ. We have invested in state-of-the-art equipment including; complete line of decontamination, cleaning, drying, balancing, vibration analysis and software to minimize failures. Our in-house machine shop is capable of machining various components, prototypes and housing conversions as needed. We support all major manufacturers including Pfeiffer Vacuum, Alcatel / Adixen, Edwards Vacuum, Varian, Oerlikon / Leybod Vacuum, Vacuubrand, and Agilent Technologies. Repair Steps - Full incoming inspection and run up time check, vibration check, drive inspection.
- Full disassembly, decontamination and cleaning.
- Pump is balanced utilizing state-of-the-art equipment from the world leader in equipment balancing and analysis to reduce noise and vibrations and extend bearings life.
- Assembly and replacement of all necessary parts such as shafts, bushings, bearings, sleeves, O-rings, gaskets, seals, wicks, etc. Only parts that meet or surpass OEM specifications are used to ensure dependable highest quality service and long pump life.
- Final test and leak check. The pump in fully assembled condition is checked for vacuum seal. Leak test to 1 x 10-9 Mbar l/s. Vibrations are analyzed and test data is digitally recorded.
Every pump and instrument is extensively tested for 48 hours. During our final tests, we monitor total pressure, temperature, vibration and noise level utilizing newest testing technologies and techniques specified by OEM. Upon request, we can provide our customers with a pump down graph. Call us for your free repair estimate at 1-973-249-0854.
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