Maintenance

General Maintenance                                              

The A-100NVP pump requires very little maintenance. However, the pump and all accessories should be checked weekly to ensure proper pump performance. This is especially important when pumping chemicals that may be extra corrosive. Inspect all components for signs of unusual wear, clogging, leaking, swelling, cracking, discoloration, or corrosion. Ensure rollers are moving freely and not straining or excessively wearing tubes. Replace worn or damaged components immediately. 

Replacing Tubes and Rollers  

The A-100NVP pump is equipped with a Tube Failure Detection (TFD+) that will sense a tube leak and stop the pump.  This feature will prevent the pump from running when there is a tube leak.   

When a tube leak occurs, or a tube needs to be replaced as part of periodic maintenance, the pump tube will need to be removed and a new tube will need to be installed. This process is quick and should not take more than a few minutes. Follow the steps below or watch the video at the bottom of this section.  

1. Relieve all pressure from the system. 
2. Disconnect the system plumbing from the pump tube adapters. 
3. Press the Run/Standby key to stop the pump. 
4. Remove the three black thumb screws from the front of the pump head cover by unscrewing them counterclockwise. 
5. Remove the pump head cover by pulling straight out. 
6. Press the Run/Standby key to start the pump. 
7. With the pump running, pull the inlet (suction) fitting out of the pump head. Guide the tube counterclockwise away from the rollers. Pull the outlet (discharge) fitting out of the pump head. 
8. Press the Run/Standby key to stop the pump. 
9. Thoroughly clean the pump head and rotor. The rotor can be removed by pulling it straight out. After cleaning, push the rotor back on the shaft. 
10. Press the Run/Standby key to start the pump. 
11. Insert the inlet (suction) side of the pump tube fitting into the lower retaining slot of the pump head. Carefully guide the pump tube into the pump head. 
12. Stretch the tube slightly and insert the outlet (discharge) fitting into the upper retaining slot of the pump head. 
13. Pull the outlet fitting out of the pump head. 
14. Place the clear cover onto the pump head. Secure the cover with the provided three thumb screws. The pump is now ready for operation.

A-100NVP Tube Replacement Video: https://www.youtube.com/watch?v=NqhrR2Vs1OI&t=69s

Cleaning and Periodic Maintenance  

The pump will require occasional cleaning and lubricating. The amount will depend on the severity of service.  

When changing the pump tube assembly, the pump head chamber, roller assembly and pump head cover should be wiped free of any dirt and debris.  

The pump head cover bearing may require grease periodically. Apply a small amount of grease (Aeroshell aviation grease #5 or equivalent) when necessary.  

A 100% silicon lubrication may be used on the roller assembly. Silicon lubricant can be used to improve tube life for Flex-A-Thane tubes.  

Periodically clean the injection/check valve assembly, especially when injecting fluids that can clog. These clogs will increase the back pressure (poor tube life), and interfere with the check valve operation. 

Periodically clean the suction strainer.  

Periodically inspect the air vents located under the motor compartment and on the rear panel. Clean if necessary. 

500 Hour Service Warning Timer  

The A-100NVP is equipped with a tube life warning timer. After approximately 500 hours of accumulated running time, the SERVICE icon will light. This is a reminder that the pump tube is nearing its minimum life expectancy and should be replaced.. Your actual tube life will depend on many factors such as the chemical used, back pressure, temperature, viscosity, and motor RPM. Press the “mode” button and “Digit” button at the same time to reset to 0 hours 

FAQs

Frequently Asked Questions