Furuno 525TID-TMD Manuel D’Utilisation

4

2. Apply sealant to the threads of the remaining screw to prevent 

water seeping into the transom.

3. Fasten the stabilizing screw into place with a socket wrench. 

For clear access to the screw, remove the transducer assembly 
from the bracket (see Figure 4). When reattaching the 
transducer, be sure to include the spacer.

Route the cable over the transom for a detachable installation. For 
permanent mounting, route the cable through a drain hole or 
through a new hole drilled in the transom above the waterline.

CAUTION: Do not remove the connector to ease cable routing. If 
the cable must be cut and spliced, use Airmar’s splash-proof 
Junction Box No. 33-035 and follow the instructions provided. 
Removing the waterproof connector or cutting the cable, except 
when using a water-tight junction box, will void the sensor warranty.

1. If a hole must be drilled through the transom,

 

choose a location 

well above the waterline (see Figure 7). Check for obstructions 
such as trim tabs, pumps, or wiring inside the hull. Mark the 
location with a pencil. Drill the hole using the appropriate size bit 
to

 

accommodate the connector.

Fiberglass hull—Minimize surface cracking by running the drill in 
reverse until the gelcoat is penetrated.

2. Route the cable over or through the transom.
3.  On the outside of the hull, secure the cable against the transom 

using the cable clamps. Position one cable clamp 30cm (12") 
above the bracket. Mark the mounting hole with a pencil.

4. Position the second cable clamp halfway between the first 

clamp and the cable hole. Mark this mounting hole.

5. If a hole has been drilled through the transom, open the large 

slot in the transom cable cover. Position the cover over the 
cable where it enters the hull. Mark the two mounting holes.

6. At each of the marked locations, use a 3mm or 1/8" bit to drill a 

hole 10mm (3/8") deep. To prevent drilling too deeply, wrap 
masking tape around the bit 10mm (3/8") from the point.

7. Apply marine sealant to the threads of the #6 x 1/2" self-tapping 

screw to prevent water from seeping into the transom. Position 
the two cable clamps over the cable and fasten them in place.

8. If you have drilled a hole through the transom, apply marine 

sealant to the space around the cable where it passes through the 
transom. Push the cable cover over the cable and screw it in place.

9. Route the cable to the instrument being careful not to tear the 

cable jacket when passing it through the bulkhead(s) and other 
parts of the boat. Use grommets to prevent chafing. To reduce 
electrical interference, separate the transducer cable from other 
electrical wiring and the engine(s). Coil any excess cable and 
secure it in place with cable ties to prevent damage.

10.Refer to your echosounder owner’s manual to connect the 

transducer to the instrument.

WARNING: Do not leave the boat in the water unchecked for 
several days. When the boat is placed in the water, immediately 
check for leaks around the screws and any other holes drilled in 
the hull. Note that very small leaks may not be readily observed.

CAUTION: Do not paint the exposed temperature button. Doing 
so will slow the sensor’s response time.

Aquatic growth can accumulate rapidly on the transducer’s 
surface reducing performance within weeks. Surfaces exposed to 
salt water that do not interlock must be coated with anti-fouling 
paint. Use water-based anti-fouling paint only. Never use ketone-
based paint, since ketones can attack many types of plastic 
possibly damaging the transducer. Repaint every 6 months or at 
the beginning of each boating season. 

CAUTION: Do not use a lubricant on the bracket; grit will stick to it 
increasing friction and wear.

Clean the sensor with a Scotch-Brite® scour pad and mild 
household detergent taking care to avoid making scratches. If the 
fouling is severe, lightly wet sand with fine grade wet/dry paper.

The information needed to order a replacement transducer is printed 
on the cable tag. Do not remove this tag. When ordering, specify the 
part number, date, and frequency in kHz. For convenient reference, 
record this information on the top of page one.
Lost, broken, or warn parts should be replaced immediately.
Bracket Assembly

33-749-01

Obtain parts from your instrument manufacturer or marine dealer. 
Gemeco

Tel: 843.210.7000

(USA)

Fax: 843.210.7170
email: sales@gemeco.com

Airmar EMEA

Tel:  +33.(0)2.23.52.06.48

(Europe, Middle East, Africa)

Fax: +33.(0)2.23.52.06.49
email: sales@airmar-emea.com

■ 

Figure 7. Cable routing

30cm (12")

cable cover

cable clamp

Copyright © 2009 Airmar Technology Corp.