Leak Detector Replacement Parts & Accessories

Genuine Mastercool replacement parts and accessories for electronic and UV leak detectors. Maintain peak detection sensitivity and reliability with professional-grade replacement components including batteries, sensors, keypads, probes, and calibration accessories.

Essential Leak Detector Parts

Replacement Batteries

Power sources for electronic leak detectors:

• Multiple battery types: Compatible with various Mastercool leak detector models
• Long service life: Quality batteries for extended operation
• Easy replacement: Simple battery changes for minimal downtime
• Stock spares: Keep batteries on hand for uninterrupted service work
• Model-specific: Correct battery type for each detector model

Sensors & Probes

Critical detection components for electronic leak detectors:

• Heated diode sensors: For HFC, HCFC, and CFC refrigerant detection
• Infrared sensors: For CO2 and other gas detection
• Flexible probes: Reach difficult access points
• Sensitivity calibration: Maintains accurate leak detection
• Replacement schedule: Replace when sensitivity degrades

Keypads & Control Panels

User interface components:

• Replacement keypads for worn or damaged controls
• Control panel assemblies
• Display screens and indicators
• Maintains full detector functionality

Leak Test Vials & Calibration Accessories

Testing and calibration components:

• Leak test vials: Verify detector sensitivity and operation
• Calibration gas: Ensure accurate detection levels
• Test caps and adapters: For system leak testing
• Quality assurance: Confirm detector working correctly

UV Leak Detection Accessories

Components for UV dye leak detection:

• Replacement UV lamps and bulbs
• UV safety glasses and filters
• Dye injectors and accessories
• UV torch batteries and chargers

Why Use Genuine Mastercool Parts?

• Guaranteed compatibility: Designed specifically for Mastercool leak detectors
• Maintains sensitivity: Genuine sensors ensure accurate leak detection
• Quality assurance: Professional-grade components for reliable performance
• Warranty protection: Using genuine parts maintains equipment warranty
• Technical support: Full UK support for installation and compatibility
• Proven reliability: Tested and verified for Mastercool detector models

Leak Detector Maintenance

Regular Maintenance Schedule

Keep your leak detector performing optimally:

• Daily (heavy use): Check battery level, test sensitivity with leak test vial
• Weekly: Clean probe tip, inspect for damage, verify operation
• Monthly: Calibration check, clean sensor area, replace batteries if needed
• Annually: Full service, sensor replacement if sensitivity degraded

Sensor Replacement

Replace sensors when:

• Detector fails sensitivity test
• Slow response to refrigerant leaks
• False alarms or erratic readings
• Manufacturer recommended service interval reached
• After exposure to high refrigerant concentrations

Battery Replacement

Replace batteries:

• When low battery indicator appears
• Before beginning major service jobs
• At start of service season (if stored long-term)
• Every 6-12 months for optimal performance

Compatible Leak Detector Models

These parts are designed for Mastercool leak detector models including:

• Mastercool 55100 series electronic leak detectors
• Mastercool 55200 series electronic leak detectors
• Mastercool 55800 series UV leak detection kits
• Other Mastercool leak detector models (check compatibility)

Not sure which parts you need? Check your leak detector model number and contact our technical team for compatibility confirmation.

Signs Your Leak Detector Needs Service

Replace parts or service your leak detector if you notice:

• Reduced sensitivity: Not detecting known leaks or slow response
• False alarms: Alarming when no refrigerant present
• Erratic readings: Inconsistent or unreliable detection
• Battery drain: Batteries depleting faster than normal
• Physical damage: Cracked housing, damaged probe, or broken controls
• No power: Detector won't turn on (check batteries first)
• Failed calibration: Cannot pass leak test vial verification

Leak Detector Sensitivity Testing

Why Test Sensitivity?

Regular sensitivity testing ensures your leak detector can find even small leaks:

• Verifies detector is working correctly
• Confirms sensor hasn't degraded
• Provides confidence in leak detection results
• Required for quality assurance and compliance

How to Test Sensitivity

1. Use leak test vial: Small vial containing trace refrigerant
2. Power on detector: Allow warm-up period (usually 30 seconds)
3. Position probe: Hold probe near test vial opening
4. Check response: Detector should alarm within seconds
5. Verify sensitivity: Should detect at manufacturer-specified level
6. Document results: Record test date and pass/fail status

Calibration

Some leak detectors require periodic calibration:

• Follow manufacturer calibration procedure
• Use calibration gas or test vials
• Adjust sensitivity if detector allows
• Replace sensor if calibration fails
• Document calibration date and results

Leak Detector Care Tips

Probe Maintenance

• Keep clean: Wipe probe tip regularly to remove oil and debris
• Avoid damage: Don't bend or kink flexible probe
• Protect tip: Use probe cap when not in use
• Replace filters: Change probe filters if equipped

Storage

• Cool, dry location: Avoid extreme temperatures and humidity
• Protective case: Store in case to prevent damage
• Remove batteries: For long-term storage, remove batteries to prevent corrosion
• Avoid contamination: Keep away from strong refrigerant sources

Handling

• Warm-up time: Allow detector to warm up before use (typically 30 seconds)
• Avoid saturation: Don't expose to high refrigerant concentrations
• Clean environment: Test in well-ventilated area away from contamination
• Gentle use: Avoid dropping or rough handling

Frequently Asked Questions

How often should I replace the sensor?

Sensor life varies by model and use intensity. Heavy daily use: 12-18 months. Moderate use: 2-3 years. Replace immediately if detector fails sensitivity test or shows degraded performance.

Why does my leak detector give false alarms?

False alarms can be caused by contaminated sensor, exposure to solvents or chemicals, high humidity, or sensor degradation. Clean the probe, test in clean environment, and replace sensor if problem persists.

Can I use third-party batteries?

Whilst quality third-party batteries may work, we recommend genuine Mastercool batteries for optimal performance and to maintain warranty coverage. Always use the correct battery type specified for your model.

How do I know if my leak detector is working correctly?

Test with a leak test vial before each use. The detector should alarm within seconds when the probe is near the vial. If it doesn't respond or response is slow, the sensor may need replacement.

What's the difference between heated diode and infrared sensors?

Heated diode sensors detect HFC, HCFC, and CFC refrigerants by heating a ceramic element. Infrared sensors detect CO2 and some other gases using infrared light absorption. Each type is designed for specific refrigerant detection.

Related Products

• Leak Detectors - Complete leak detection equipment range
• Manifolds & Gauges - For system diagnostics
• Vacuum Pump Parts - Vacuum pump maintenance

Need help identifying the right parts for your leak detector? Contact our technical team with your leak detector model number for expert advice.

Genuine Mastercool leak detector parts. Official UK distributor stock with full technical support.