Silva TH52 installation manual Checking for Leaks, Blanking Plug

tighten only. Do not over tighten.

Warning: Always attach the safety wire to prevent the insert from backing out in the unlikely event that the cap nut fails or is screwed on incorrectly.

6.Attach the safety wire. Attach the safety wire to one eye in the hull nut. Lead the wire in a counterclockwise direction and thread it through one eye in the cap nut, the pull ring, the second eye in the cap nut, and the second eye in the hull nut.

Twist the wire securely to itself.

7.Route the cable to the Server, being careful not to tear the cable jacket when passing it through the bulkhead(s) and other parts of the boat. To reduce electrical interference, separate the sensor cable from other electrical wiring and the engine. Coil any excess cable and secure it in place using zip-ties to prevent damage.

8. Refer to the Server manual to connect the sensor to the instrument.

5.1Checking for Leaks

Caution: Never install a thru-hull transducer and leave the boat in the water unchecked for several days.

When the boat is placed in the water, immediately check around the thru-hull transducer for leaks. Note that very small leaks may not be readily observed. It is best not to leave the boat in the water for more than 3 hours before checking it again. If there is a small leak, there may be considerable bilge water accumulation after 24 hours. If a leak is observed, repeat “Bedding” and “Installing” immediately.

5.2Blanking Plug

1.Inspect and lubricate the O-rings on the blanking plug with silicone grease or petroleum jelly.

2.Remove the safety wire from the pull ring and cap nut. Then, unscrew the cap nut (see Figure 2).

3.With the blanking plug ready in one hand, pull the insert most of the way out. Remove the insert and rapidly replace it with the plug. Seat it into place with a pushing twisting motion until the key fits into the notch in the housing. With practice, only 250ml (10oz.) of water will enter the boat. Screw the cap nut in place and hand-tightenonly.

Warning: Always attach the safety wire to prevent the insert from backing out in the unlikely event that the cap nut fails or is screwed on incorrectly.

4.Reattach the safety wire.

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