KNF NMP 830 KPDC User Manual

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KNF Neuberger BA121556-121559 NMP830_850-EN 0221.doc

Translation of original Operating and Installation Instructions, English Keep for future use

Operating and Installation Instructions

Micro Diaphragm Gas Pumps

Type range:

NMP 830 KPDC

NMP 830 KPDC-B

NMP 830 KNDC

NMP 830 KNDC-B

NMP 830 KNE

NMP 830 KVDC

NMP 830 KVDC-B

NMP 830 KVE

NMP 830 KTDC

NMP 830 KTDC-B

NMP 830 KTE

NMP 850 KPDC

NMP 850 KPDC-B

NMP 850.1.2 KPDC-B

NMP 850 KTDC

NMP 850 KTDC-B

NMP 850.1.2 KTDC-B

You have selected a high-quality KNF product; the following tips will help you operate it safely, and

reliably over a long period of time. Carefully study the Operating and Installation Instructions before

using the pumps and observe at all times the relevant instructions to avoid dangerous situations. The

manual was produced for the serial pumps stated above. With customer-specified projects (pump

types starting with “PJM“ or “PMM“) there could be differences in detail. For customer-specified pro-

jects please therefore take into account any agreed technical specifications, as well as these instruc-

tions.

Contents Page

1. About this document ................................................................. 2

2. Use ........................................................................................... 3

3. Safety ....................................................................................... 4

4. Technical Data.......................................................................... 6

5. Design and function ................................................................ 10

6. Installation and connection ..................................................... 11

7. Operation ................................................................................ 15

8. Servicing ................................................................................. 16

9. Troubleshooting ...................................................................... 20

10. Returns ................................................................................... 22

KNF Micro AG

Zelglimatte 1b

CH-6260 Reiden

Switzerland

Phone 0041(0)62 787 88 88

E-mail: info.micro@knf.com

www.knf.com

Questions and Answers:

Y
ygarciaAug 9, 2025
Why is the flow rate low on my KNF NMP 830 KPDC?
- C
  Cheryl LewisAug 9, 2025
  If your KNF Water Pump's flow rate, pressure, or vacuum is too low, several factors could be responsible. Condensation in the pump head can be resolved by installing the pump at the system's highest point. Pressure imbalances can be addressed by changing the pressure conditions. Insufficient cross-sections in pneumatic lines or connections require disconnecting the pump to assess output, eliminating throttling, and using larger cross-section lines or parts if necessary. Leaks should be eliminated, and any blockages in connections or lines need to be cleared. Soiled head parts should be cleaned. Finally, worn diaphragms or valve plates should be replaced.