Rain Bird U-15 Series MPR Nozzle Instruction Manual

Product Overview

The Rain Bird U-15 Series MPR Nozzle is designed for efficient and uniform watering of your lawn and garden. It features a full-circle spray pattern with a 15-foot spray radius, ensuring comprehensive coverage. This nozzle is engineered to minimize dry spots and maintain a matched precipitation rate with other Rain Bird MPR nozzles, promoting healthier landscapes and water conservation.

Image: Close-up of the Rain Bird U-15 Series MPR Nozzle, showing its internal components and fine mesh screen.

Key Features:

• 15 ft. spray nozzle with full-circle spray pattern (360 Degree)
• Additional orifice for close-in watering
• Minimizes dry brown spots around spray heads - Low Scheduling Coefficient for efficient watering
• Matched precipitation rate between sets and matched flow (GPM, m3/h and l/s) and precipitation rates with all Rain Bird MPR nozzles
• Fine mesh screen protects bottom orifice from debris
• Stainless steel adjustment screw to adjust flow and radius

Setup and Installation

Replacing or installing your Rain Bird U-15 Series MPR Nozzle is a straightforward process. Ensure the water supply to the sprinkler system is turned off before beginning any work.

Steps for Nozzle Replacement:

1. Carefully unscrew the old nozzle from the sprinkler body.
2. Inspect the internal filter screen. If it is clogged or damaged, replace it with a new one or clean the existing one.
3. Screw the new Rain Bird U-15 Series MPR Nozzle onto the sprinkler body. Hand-tighten only to avoid overtightening.
4. Once installed, turn on the water supply to test the spray pattern and make any necessary adjustments.

Operating and Adjustment

The Rain Bird U-15 Series MPR Nozzle allows for easy adjustment of its spray arc and radius to suit your specific watering needs.

Adjusting the Spray Arc:

The nozzle's full-circle (360-degree) pattern is fixed. To adjust the direction of the spray, simply rotate the entire sprinkler stem until the desired coverage area is achieved. The ratcheting mechanism allows for precise positioning.

Adjusting the Spray Radius:

The spray radius (distance the water travels) can be adjusted using the stainless steel screw located on the top of the nozzle. Use a flat-head screwdriver to turn the screw:

• Clockwise: Decreases the spray radius.
• Counter-clockwise: Increases the spray radius, up to the nozzle's maximum 15-foot distance.

Maintenance

Regular maintenance ensures optimal performance and longevity of your Rain Bird U-15 Series MPR Nozzle.

Cleaning the Filter Screen:

The nozzle includes a fine mesh screen to prevent debris from clogging the spray. If you notice reduced water flow or an irregular spray pattern, the screen may be clogged. To clean it:

1. Turn off the water supply to the sprinkler head.
2. Unscrew the nozzle from the sprinkler body.
3. Remove the mesh filter screen from the base of the nozzle.
4. Rinse the screen under running water to remove any debris. A small brush can be used for stubborn particles.
5. Reinsert the clean filter screen and screw the nozzle back onto the sprinkler body.

Troubleshooting

Here are some common issues and their solutions for your Rain Bird U-15 Series MPR Nozzle:

• Issue: Uneven or reduced spray pattern.
  Solution: Check the nozzle's filter screen for clogs (refer to Maintenance section). Ensure the radius adjustment screw is not overtightened or too loose.
• Issue: Water pooling around the sprinkler head.
  Solution: This may indicate a leak in the sprinkler body or connection, not necessarily the nozzle itself. Inspect the sprinkler body for cracks or loose connections.
• Issue: No water coming from the nozzle.
  Solution: Verify that the water supply to the zone is on. Check for severe clogs in the filter screen or the nozzle orifice. Ensure the nozzle is correctly seated and tightened.

Specifications

Warranty and Support

For warranty information or technical support, please refer to the official Rain Bird website or contact their customer service directly. Keep your purchase receipt as proof of purchase.

Rain Bird is committed to providing high-quality irrigation products and support to ensure your satisfaction.