NELSON 800P Ball Air Vent Booster Pump Air Lock Instruction Manual

: May 15, 2024
: NELSON

Table of Contents

NELSON 800P Ball Air Vent Booster Pump Air Lock
Product Information
Product Usage Instructions
FAQ
Installation Instruction
References
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Download This Manual (PDF format)

NELSON 800P Ball Air Vent Booster Pump Air Lock

Product Information

Specifications:

Model: 800P
Manufacturer: Nelson Irrigation Corporation
Components: Ball Vent Kit #10753, 12399 Reducing Elbow, 1/4 FNPT x 1/8 MPNT, 10752 Ball Vent, 1/4 MNPT

Product Usage Instructions

Preventing Booster Pump Air-Lock:

IMPORTANT: BALL VENT KIT #10753 MUST BE INSTALLED!

If the Ball Vent Kit (#10753) included with the 800P is not properly installed, air may be trapped in the pump, preventing the pump from priming. Follow the guidelines below to prevent booster pump air-lock.

Option 1 – Top of Pump Outlet Installation:

Ensure the air valve is closed.
Install the Ball Vent in the top of the pump outlet. If unable to be installed in the top of the pump discharge, the ball vent may be alternatively installed in the upstream valve cage.
Works best when the system end pressure is less than ~30psi and the system is filled slowly.
Air is evacuated through the ball vent in the top of the pump discharge.

Important: If the pressure spikes during filling, the vent could seal off, causing air entrapment which could prevent the pump from priming.

Option 2 – Valve Chamber Installation:

Ensure the air valve is open.
Install the Ball Vent in the valve chamber.
Works best when the system end pressure is more than ~30psi and the system is filled quickly.
Ball vent in valve chamber keeps 800P open, allowing air to escape through the valve until system pressure builds up.

Important: If the system pressure drops at any time, then the valve might not close completely.

FAQ

Q: What should I do if I encounter air-lock issues with the booster pump?

A: Ensure that the Ball Vent Kit #10753 is properly installed according to the instructions provided. Follow the recommended guidelines for Option 1 or Option 2 installation based on your system pressure and filling speed.

Installation Instruction

If the Ball Vent Kit (#10753) included with the 800P is not properly installed, air may be trapped in the pump, preventing the pump from priming. Follow these guidelines to help prevent booster pump air-lock.

Install Ball Vent in Top of Pump Outlet

(If unable to install in top of pump discharge, the ball vent may be alternatively installed in the upstream valve cage.) Works best when the system end pressure is LESS than ~30psi* and the system is filled SLOWLY. Air is evacuated through ball vent in top of the pump discharge. Important: if the pressure spikes during filling then the vent could seal off, causing air entrapment which could prevent the pump from priming.

Install Ball Vent in Valve Chamber

Works best when the system end pressure is MORE than ~30psi* and the system is filled QUICKLY. The ball vent in the valve chamber keeps 800P open, allowing air to escape through the valve until system pressure builds up.

Important: if the system pressure drops at any time then the valve might not close completely.