Can I fix my vacuum pump myself?

It's easy! Replacement kits contain a diaphragm and valves, and step by step instruction on how to repair your vacuum pump yourself, right in your lab, using everyday tools. Instructions are included in every spares kit. One kit services one head. Call Customer Service for a replacement instruction sheet.

Can I buy spare parts directly from KNF?

Contact KNF at 609-890-8600. We accept all major credit cards.
Click on the Parts Kit Price request tab above to obtain a spare parts kit quotation for your pump.
Always keep a kit or two on hand to save yourself valuable time. One spare parts kit per pump head.
Instructions are in every spares kit.

I need to ship my pump back to KNF for repairs. Hwo do I do that?

Customers in other countries, please click HERE for an address of a KNF office or representative nearest you.
To get the process started immediately:

1) Download and print a copy of our RMA Request form. See tab above.

2) Fill out the form and fax to 609-890-8323. Be sure to include your phone number.

3) Call KNF Lab Customer Service 609/890-8600 during normal business hours 8:00 a.m. to 4:30 p.m. (EST) and explain that you faxed in the form and want to return a pump for repairs.

4) You will be faxed an RMA return instruction form with an RMA number which must be displayed on the outside of the shipping carton. Include Material Safety Data sheets and other details before returning the pump.

Pack the pump properly. Wads of newspaper or peanuts are unacceptable packing materials, as the pump is heavy and settles to the bottom of the carton where it will most likely suffer damage. Foam blocks, or the original packing materials, if available, are best. KNF is not responsible for incoming shipping damage.

Do I need to protect my lab vacuum pump from liquid condensate?

That depends on the model you have. KNF's latest LABOPORT® series N800FTP "Full PTFE " series pumps tolerate occasional liquid droplets. They feature KNF's new Kalrez® multi-port valve system, but are not designed to pump liquids continually.
As a general rule, all vacuum pumps, especially earlier KNF models and competitive brands that use the traditional "flapper" valves, should be protected from incoming condensate by using an upstream cold trap.
Not sure what type you have? Call us at 609-890-8600.

What is the KNF limited warranty?

Limited Warranty - KNF NEUBERGER, INC. (KNF) warrants to buyer that its products will be free from defects in material and workmanship under normal and appropriate use, and agrees to repair or replace any of its products without charge for parts or labor within one year from the date of shipment to the original purchaser.

Products to be evaluated for warranty coverage: Determination of coverage under this warranty is the sole responsibility of the manufacturing engineering representative of KNF. This determination will frequently require the return of the product to KNF. All product returns will be handled in accordance with KNF's product return policy. KNF reserves the right to inspect custom installations and devices that use KNF products as part of the warranty evaluation process. This warranty does not cover any misuse, negligence, deterioration by chemical action, unauthorized repair or alteration in any way, inappropriate handling or storage that in our judgement caused the product failure. KNF shall not be liable for any inconvenience, loss of use, or any consequential loss, damage or injury arising from any cause whatsoever. No employee, agent or representative of KNF shall have any right or authority to vary or alter the terms of this warranty. This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

Limitations: KNF offers engineering and technical assistance to support the application and selection of our products. Except as otherwise agreed to in writing, it is expressly understood that this warranty is in lieu of any and all other warranties, whether expressed or implied, with respect to the goods sold, including any warranty of merchantability and fitness for a particular purpose. Sole responsibility or liability of KNF shall be to replace any products or parts thereof which shall not conform to such warranty, provided that the products are used in accordance with KNF specifications. Customer is responsible for determining the suitability of our products for customer's use or resale, or for incorporating them into objects or for applications which customer designs, assembles constructs or manufactures. Please call our Technical Sales Department for further information.

Return Requests / Inquiries: Direct all warranty and repair requests to KNF Customer Service Department for instructions and an RMA number before returning any unit for repair or evaluation. Follow instructions above. Important information conforming to the "Right To Know" act, such as a Material Safety Data Sheet may be required.

Unit Conversion Tools:

NOTES: Standard continuous performance ratings listed on this KNF website and on KNF datasheets are based on technical data and test results of nominal units at sea level, measured with an ambient temperature of 70°F (21°C), and nominal electrical supply as listed above, and are for reference only.Multiple-head models, different performance models, cost-effective OEM modifications, and a variety of motor options and different materials of construction are also available. Certified drawings are available upon request. Specifications subject to change without notice. You should always check corrosion resistance charts for compatibility with the medium you intend to pump.