🧪

Chemical Dosing Problems

Fix automatic chemical feeder and dosing system issues

Common Chemical Dosing Issues

⚗️ Chemical Problems

  • • Inconsistent chlorine levels
  • • pH won't stay balanced
  • • Over/under dosing chemicals
  • • Chemical crystallization

🔧 Equipment Issues

  • • Pump not working
  • • Sensor reading incorrectly
  • • Clogged injection points
  • • Control system errors

Quick Answer

Chemical dosing problems typically involve inaccurate sensors, clogged pumps, or programming issues. Start by testing water chemistry manually and comparing to system readings. Check that chemical containers have adequate supply and pumps are operating. Clean or calibrate pH and ORP probes monthly. Look for crystallized chemicals in tubing or injection points. Most dosing issues are sensor-related and can be resolved with proper cleaning and calibration.

Types of Pool Chemical Feeders

Automatic Chlorinators

Function: Maintain consistent chlorine levels automatically

Types: Tablet feeders, liquid chlorine pumps, salt systems

Control: Timer-based or ORP sensor controlled

Common Issues: Inconsistent dosing, sensor drift, clogged lines

Pro Tip: ORP sensors need monthly cleaning for accuracy

pH Controllers

Function: Automatically adjust pH levels

Types: Acid pumps (muriatic acid), CO2 systems

Control: pH probe with feedback control

Common Issues: Probe fouling, over-correction, pump failure

Pro Tip: pH probes are sensitive - handle carefully during cleaning

Integrated Systems

Function: Complete chemical management systems

Types: IntelliChem, Sense and Dispense, AquaPure

Control: Multiple sensors with automation integration

Common Issues: Complex calibration, multiple sensor failures

Pro Tip: Professional setup ensures optimal performance

Manual Feeders

Function: Simple chemical dispensing devices

Types: Floating dispensers, erosion feeders, tablet feeders

Control: Manual adjustment of flow or dissolution rate

Common Issues: Inconsistent dosing, weather sensitivity

Pro Tip: Regular checking needed to maintain proper levels

Chemical Dosing System Diagnosis

Step-by-Step Diagnosis

1

Check Chemical Levels and Flow

Test water chemistry and verify water is flowing through chemical feeder.

2

Inspect Chemical Supply

Check that chemical containers have adequate supply and no crystallization.

⚠️ Warning: Never mix different types of chemicals

3

Test Pump and Injection Systems

Verify chemical pumps are operating and injection points are clear.

4

Calibrate Sensors and Probes

Test pH and ORP probe accuracy against manual test results.

⚠️ Warning: Use fresh calibration solutions for accurate results

5

Check Control Panel Settings

Verify dosing schedules, setpoints, and system programming.

6

Inspect Tubing and Connections

Look for kinked tubing, loose connections, or chemical crystallization.

⚠️ Warning: Replace tubing annually to prevent failures

Chemical Safety Warning

  • Never mix different types of pool chemicals
  • Always wear protective equipment when handling chemicals
  • Store chemicals in original containers in cool, dry place
  • Keep acids and bases separate to prevent dangerous reactions
  • Flush eyes immediately if chemical contact occurs

Common Dosing Problems & Solutions

Chlorine Levels Won't Stabilize

Most Likely Cause:

ORP probe dirty or miscalibrated

Quick Check:

Test chlorine manually and compare to system reading

Solution:

Clean and recalibrate ORP probe with fresh solutions

pH Keeps Drifting High or Low

Most Likely Cause:

pH probe contamination or chemical depletion

Quick Check:

Test pH manually and check chemical container levels

Solution:

Clean probe, refill chemicals, recalibrate system

Chemical Pump Not Working

Most Likely Cause:

Clogged tubing or crystallized chemicals

Quick Check:

Look for white crystal buildup in tubes or injection points

Solution:

Flush lines with water, replace clogged tubing

Erratic Chemical Readings

Most Likely Cause:

Poor water circulation or sensor placement

Quick Check:

Verify pump is running and water is circulating well

Solution:

Improve circulation, relocate sensors to better flow area

Brand-Specific Chemical Systems

Pentair IntelliChem

Features: Dual probe system with automation integration

Calibration: Built-in calibration routines

Common Issues: Flow cell clogging, probe drift

Maintenance: Monthly probe cleaning, annual flow cell service

Tip: Use only Pentair calibration solutions for best results

Hayward Sense and Dispense

Features: Smart chemistry with app monitoring

Calibration: App-guided calibration process

Common Issues: WiFi connectivity, probe accuracy

Maintenance: Self-cleaning probes, chemical refill alerts

Tip: Use Hayward chemicals for warranty compliance

Jandy AquaPure

Features: Simple pH and chlorine control

Calibration: Manual calibration with test solutions

Common Issues: Pump reliability, sensor fouling

Maintenance: Regular pump priming, probe cleaning

Tip: Prime chemical pumps weekly to prevent air locks

Generic/Aftermarket

Features: Basic chemical control systems

Calibration: Manual adjustment typically required

Common Issues: Limited diagnostics, compatibility

Maintenance: More frequent calibration needed

Tip: Consider upgrading to integrated systems for better reliability

Chemical Dosing System Repair Costs

Chemical Feeder Repair Costs

🔧 DIY Attempt

Estimated Cost:$25-150
Time Required:1-3 hours
Difficulty:Moderate

⚠️ Risks:

  • Chemical exposure from improper handling
  • Expensive probe damage from incorrect cleaning
  • Over/under dosing from calibration errors
  • Voiding equipment warranties

👷 Professional Service

Service Cost:$150-800
Completion Time:1-3 hours

✅ Includes:

  • Complete system diagnosis and testing
  • Professional probe cleaning and calibration
  • Chemical line flushing and repair
  • Programming optimization
  • Chemical safety training and documentation

💰 Value Tip: CoOpPools offers transparent pricing with no hidden fees. Our worker-owned model means fair prices and invested service.

Maintain Chemical Dosing Systems

Prevention Tips

1

Regular Probe Maintenance

Clean and calibrate pH and ORP probes monthly for accurate readings

Some Experience Needed
2

Quality Chemical Storage

Store chemicals in cool, dry place. Replace before expiration dates

Homeowner Friendly
3

System Cleaning Schedule

Flush chemical lines monthly to prevent crystallization buildup

Some Experience Needed
4

Monitor Chemical Consumption

Track usage patterns to identify system problems early

Homeowner Friendly
5

Professional Calibration

Have system professionally calibrated twice yearly for accuracy

👷Professional Recommended

🏊 Pro Tip: Regular professional maintenance prevents 90% of pool problems.Get your maintenance quote today

Need Professional Help?

Our chemical automation specialists can calibrate your dosing systems, replace sensors, and optimize chemical usage. We ensure your automatic feeders maintain perfect water chemistry while minimizing chemical costs and equipment wear.

Mention "chemical dosing issues" when calling for faster service

24/7
Emergency Service
$160+
Monthly Service
15+
Cities Served

Related Pool Problems

Related Pool Problems

💡 Did You Know? Pool problems often occur together.Chemical Dosing Problems can lead to or be caused by these related issues. Understanding the connections helps prevent future problems.