1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Balboa 31990-WH Spa Skimmer Complete. Please read this manual thoroughly before attempting any installation or operation to ensure proper function and safety. Retain this manual for future reference.
2. Important Safety Information
Always follow basic safety precautions when installing or servicing spa equipment to reduce the risk of injury, fire, or electric shock.
- Ensure all power to the spa is disconnected at the circuit breaker before beginning any installation or maintenance.
- Installation should be performed by a qualified technician or a licensed electrician in accordance with all local and national electrical codes.
- Do not operate the spa if the skimmer components are damaged or improperly installed.
- Keep children away from the installation area.
- Wear appropriate personal protective equipment (PPE) during installation.
3. Package Contents
Verify that all components listed below are present and undamaged before proceeding with installation.
- Skimmer Faceplate (White)
- Skimmer Body/Housing (White)
- Straight Nut (White)
- Gasket/Seal
- Mounting Screws (2)

Image 1: All components of the Balboa 31990-WH Spa Skimmer Complete, including the skimmer faceplate, skimmer body, straight nut, gasket, and two mounting screws.
4. Installation Guide
4.1. Before You Begin
- Ensure the spa is completely drained and disconnected from all power sources.
- Gather necessary tools: screwdriver, sealant (if required by existing spa setup), and a clean cloth.
- Inspect the spa wall opening for any debris or damage.
4.2. Step-by-Step Installation
- Prepare the Opening: Clean the area around the skimmer opening on both the inside and outside of the spa wall. Ensure it is free of old sealant or debris.
- Position the Gasket: Place the gasket onto the skimmer body, ensuring it is properly seated. The gasket creates a watertight seal between the skimmer body and the spa wall.
- Insert Skimmer Body: From the inside of the spa, insert the skimmer body through the spa wall opening. Ensure the skimmer body is oriented correctly, with the water intake opening facing the spa interior.
- Attach Straight Nut: From the outside of the spa, thread the straight nut onto the skimmer body. Hand-tighten the nut initially.
- Secure Faceplate: Align the skimmer faceplate with the skimmer body from the inside of the spa. The faceplate should sit flush against the spa wall.
- Install Screws: Insert the two mounting screws through the designated holes in the faceplate and into the skimmer body. Tighten the screws evenly until the faceplate is secure and a tight seal is formed. Do not overtighten, as this can crack the plastic components.
- Final Tightening: Once the faceplate screws are snug, use a wrench or appropriate tool to gently tighten the straight nut from the outside of the spa. This ensures a complete watertight seal.
- Leak Check: After installation, refill the spa and carefully check for any leaks around the skimmer assembly. If leaks are detected, drain the spa, re-check the gasket and tightening, and re-install.
5. Operation
The Balboa 31990-WH Spa Skimmer is designed to continuously remove debris from the spa's water surface. Once installed, it operates as part of your spa's filtration system. Water flows into the skimmer opening, carrying floating debris such as leaves, hair, and oils, which are then directed to the spa's filter basket (not included with this skimmer complete unit).
- Ensure the spa water level is maintained above the "WATER LINE" marking on the skimmer faceplate for optimal skimming performance.
- Regularly check and empty the skimmer basket (if applicable to your spa system) to prevent blockages and maintain efficient water circulation.
6. Maintenance
Regular maintenance of your skimmer ensures efficient operation and extends its lifespan.
- Weekly: Inspect the skimmer faceplate and body for any cracks or damage. Clean any visible debris from the skimmer opening.
- Monthly: If your spa system includes a skimmer basket, remove and clean it thoroughly. Check the gasket for signs of wear or deterioration.
- Annually: During spa draining, inspect the entire skimmer assembly for any signs of leaks or structural integrity issues. Replace components as necessary.
7. Troubleshooting
Refer to the table below for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Water leaking around skimmer | Loose straight nut or faceplate screws; damaged gasket; improper installation. | Drain spa, tighten straight nut and faceplate screws evenly. Inspect and replace gasket if damaged. Re-install following instructions carefully. |
| Poor skimming action | Low water level; clogged skimmer basket; debris obstructing skimmer opening. | Adjust spa water level to the recommended line. Clean skimmer basket. Remove any large debris from the skimmer opening. |
| Skimmer components appear loose | Screws or nut have loosened over time. | Drain spa, gently re-tighten faceplate screws and straight nut. |
8. Specifications
- Model Number: 31990-WH
- Brand: Balboa Water Group
- Product Dimensions: 10.5 x 7.9 x 2.9 inches
- Item Weight: 1 pound
- Color: White
- Application: Spa/Hot Tub Skimmer Replacement Part
9. Warranty Information
Balboa Water Group products are manufactured to high-quality standards. For specific warranty details regarding your Balboa 31990-WH Spa Skimmer Complete, please refer to the warranty documentation provided at the time of purchase or visit the official Balboa Water Group website. Keep your proof of purchase for warranty claims.
10. Customer Support
If you have any questions, require technical assistance, or need to report a problem with your Balboa 31990-WH Spa Skimmer Complete, please contact Balboa Water Group customer support. Contact information can typically be found on the manufacturer's website or on your product packaging.
For additional resources and product information, you may visit the Balboa Water Group website.





