Raymarine Lexan Depth Transducer Instruction Manual

1. Product Overview

The Raymarine P19 Lexan Depth Transducer (Model M78713-PZ) is a low-profile, thru-hull transducer designed for accurate depth measurement in marine environments. It is compatible with various Raymarine display units, including the ST60+, i50, ST70, and i70, though ST70/i70 may require additional components.

Figure 1: Raymarine P19 Lexan Depth Transducer. This image shows the main body of the transducer, which is threaded for secure installation, and its flat, low-profile sensing face. A cable extends from the rear of the unit.

Key Features:

• P19 Plastic Low Profile Thru Hull design.
• Includes a 45-foot (13.7 meter) cable for flexible installation.
• Operates at a frequency of 200 kHz for precise depth readings.
• Compatible with both metal and fiberglass hull materials.
• Requires a 2-inch (5.08 cm) installation hole diameter.

2. Specifications

3. Setup and Installation

Proper installation is crucial for the optimal performance of your depth transducer. This transducer is designed for thru-hull mounting.

3.1 Pre-Installation Considerations

• Location: Choose a location on the hull that is free from turbulence, air bubbles, and propeller wash. The transducer should be mounted in an area where it will always be submerged, even at high speeds or during turns.
• Hull Material: This transducer is suitable for both metal and fiberglass hulls. Ensure the chosen location has sufficient structural integrity.
• Clearance: Verify there is adequate space inside the hull for the transducer body, securing nut, and cable routing.

3.2 Installation Steps

1. Drill Hole: Using a 2-inch (5.08 cm) hole saw, carefully drill a hole through the hull at the selected location. Ensure the hole is perpendicular to the hull surface.
2. Prepare Surface: Clean and deburr the area around the hole, both inside and outside the hull. Apply a marine-grade sealant (e.g., 3M 5200 or equivalent) around the edge of the hole on the outside of the hull.
3. Insert Transducer: From the outside of the hull, insert the transducer through the drilled hole. Ensure the transducer is oriented correctly, typically with the cable exiting towards the stern.
4. Secure Transducer: From inside the hull, slide the rubber washer and then the securing nut onto the threaded body of the transducer. Hand-tighten the nut, then use a wrench to tighten it further until the transducer is firmly seated and the sealant is squeezed out. Do not overtighten.
5. Cable Routing: Route the 45-foot cable away from sources of electrical interference (e.g., engine, alternators, other high-current cables). Secure the cable using cable ties or clamps to prevent chafing and movement.
6. Connect to Display: Connect the transducer cable to the appropriate depth input port on your compatible Raymarine display unit (ST60+, i50, ST70, or i70). For ST70/i70, an ST70 depth pod or ITC5 may be required. Refer to your display unit's manual for specific connection details.
7. Test for Leaks: After installation, allow the sealant to cure according to the manufacturer's instructions. Before launching the vessel, or immediately after, carefully inspect the installation area for any signs of water ingress.

4. Operating Instructions

The Raymarine P19 transducer functions by sending and receiving sonar signals to determine water depth. Once properly installed and connected to a compatible Raymarine display, operation is largely managed through the display unit itself.

4.1 Basic Operation

• Power On: Ensure your Raymarine display unit is powered on. The transducer will automatically begin transmitting and receiving signals once the display is active and configured for depth.
• Depth Display: The current water depth will be shown on your display unit. Most Raymarine displays allow for customization of depth units (e.g., feet, meters, fathoms).
• Alarms: Configure shallow and deep water alarms on your display unit as needed. These alarms will alert you if the depth falls below or exceeds a set threshold.

4.2 Advanced Settings (via Display Unit)

Your Raymarine display unit may offer advanced settings to optimize depth readings:

• Keel Offset: Adjust the depth reading to compensate for the distance between the transducer and the bottom of your keel or waterline.
• Gain/Sensitivity: Adjust the sensitivity of the transducer to improve target detection in varying water conditions. Higher gain may show more detail but also more noise.
• Noise Filter: Apply filters to reduce interference from other electronic devices or turbulent water.

Refer to the specific instruction manual for your Raymarine display unit (ST60+, i50, ST70, i70) for detailed instructions on configuring these settings.

5. Maintenance

Regular maintenance ensures the longevity and accuracy of your Raymarine P19 Depth Transducer.

• Cleaning: Periodically inspect the transducer's face (the part exposed to water) for marine growth, dirt, or debris. Clean gently with a soft cloth and mild soap or a marine-safe hull cleaner. Avoid abrasive materials that could scratch the surface.
• Inspection: Check the transducer cable for any signs of wear, chafing, or damage. Ensure all connections are secure and free from corrosion.
• Winterization: If your vessel is stored in freezing conditions, ensure the transducer is not exposed to ice, which can damage the element. If the boat is hauled out, clean the transducer thoroughly before storage.

6. Troubleshooting

If you experience issues with your depth transducer, consider the following common troubleshooting steps:

• No Depth Reading or Erratic Readings:
  • Check all cable connections between the transducer and the display unit. Ensure they are secure and free of corrosion.
  • Inspect the transducer face for marine growth, air bubbles, or damage. Clean if necessary.
  • Verify the transducer is fully submerged in water.
  • Check for sources of electrical interference near the transducer or cable.
  • Adjust the gain/sensitivity settings on your display unit.
• Inaccurate Depth Readings:
  • Ensure the keel offset setting on your display unit is correctly configured.
  • Verify the transducer is mounted in a location free from turbulence or air pockets.
  • Check for any physical damage to the transducer element.
• Display Unit Not Recognizing Transducer:
  • Confirm the transducer is compatible with your specific Raymarine display model.
  • Ensure the display unit's software is up to date.
  • If using an ST70/i70 display, confirm the ST70 depth pod or ITC5 is correctly installed and functioning.

If problems persist after attempting these steps, contact Raymarine customer support or a certified marine electronics technician.

7. Warranty and Support

Raymarine products are designed for reliability and performance. For specific warranty information regarding your P19 Lexan Depth Transducer, please refer to the warranty documentation included with your purchase or visit the official Raymarine website.

Customer Support:

For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact Raymarine customer support. You can typically find contact information, FAQs, and support resources on the official Raymarine website: www.raymarine.com/support

When contacting support, please have your product model number (M78713-PZ) and any relevant purchase details ready.