Airmar DX900+ Owner'S Manual & Installation Instructions Download Page 16

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6. The O-rings must be intact and well lubricated to make a watertight seal. After 

the marine sealant cures, inspect the O-rings, including the

 YELLOW

 O-ring, on 

the insert (replace if necessary) and lubricate them with the silicone lubricant 
supplied (Figure 7). Also lubricate the bore of the housing above the valve.

7. The insert must be fully inserted into the housing and the cap nut screwed on 

completely to make a watertight seal. Slide the insert into the housing with the 

arrow on the top pointing forward toward the bow area 

(Figure 8). Being sure 

the cable exit is pointing backward toward the stern, seat the insert into place 
with a 

firm,

 pushing twisting motion until the key fits into the notch. When this 

happens, you may hear a snap and the insert will no longer move. Be careful 
not to rotate the housing and disturb the sealant.

Screw the cap nut several turns until the threads are engaged. Being sure the 
cable exit is still pointing backward toward the stern, continue to tighten the cap 
nut completely. The arrow on the top of the insert, the key on the insert, the notch 
in the housing, and the arrow on the flange will be aligned facing forward toward 
the bow. 

Hand tighten

 only. Do not over tighten.

NOTE

: The electrodes will protrude into the water

.

8. 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.

Plastic housing

—Attach the safety wire to one eye in the hull nut (Figure 4). 

Keeping the wire taut throughout, lead the wire in a counterclockwise direction 
and thread it through one eye in the cap nut. Thread the wire through the eye a 
second time. Then lead the wire through the eye in the insert. Twist the wire 
securely to itself.

Metal housing

—Wrap one end of the safety wire tightly around the housing 

and twist it together with the long end (Figure 4 or 5). Keeping the wire taut 
throughout, lead the wire straight up and through one eye in the cap nut. Thread 
the wire through the eye a second time. Then lead the wire counterclockwise 
and through the eye in the insert. Twist the wire securely to itself.

Figure 8. Insert: top view with arrow facing forward toward the bow area

 

Copyright © 2017 Airmar Technology Corp

BOW

 

cable

Summary of Contents for DX900+

Page 1: ...found on the cable tag for future reference Part No __________Date__________Frequency______________ 17 626 01 rev 02 09 12 17 Owner s Guide Installation Instructions Electromagnetic Multilog Sensor Sm...

Page 2: ...f this manual or any revision hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unau...

Page 3: ...7 Choosing the Mounting Location 9 Anti fouling Paint 11 Installation 12 Installation in a Cored Fiberglass Hull 17 Cable Routing Connecting 18 Speed Temperature Only NMEA 0183 18 Depth Speed Temperat...

Page 4: ...isplay and smart devices Supports both iOS and Android platforms Performs speed calibration and more through the CAST app Configurable data update rate up to 10Hz Diagnostic information for troublesho...

Page 5: ...pp you can perform speed temperature and attitude calibrations without extra converters or cables In addition to firmware updates the app logs all of the NMEA sensor data over a customized time period...

Page 6: ...Water based anti fouling paint mandatory in salt water Electric drill with 10mm 3 8 or larger chuck capacity Drill bit 3mm or 1 8 Hole saw Plastic metal housing in non metal hull 51mm or 2 Stainless s...

Page 7: ...cap nut fails or is screwed on incorrectly WARNING Immediately check for leaks when the boat is placed in the water Do not leave the boat unchecked for more than three hours Even a small leak may allo...

Page 8: ...rom a metal hull to prevent electrolytic corrosion Use the isolation bushing supplied CAUTION The sensor must be aligned within 1 of parallel to the centerline keel of the boat CAUTION The arrow on th...

Page 9: ...ance especially at high speeds Mount side by side The sensor must be continuously immersed in water The water flowing under the hull must be smooth with a minimum of bubbles and turbulence especially...

Page 10: ...t of lifting strakes to insure that the sensor will be in contact with the water at high speeds The starboard side of the hull where the propeller blades are moving downward is preferred Outboard and...

Page 11: ...tallation but allow sufficient drying time Reapply paint every 6 months or at the beginning of each boating season Paint the following surfaces Figure 3 Outside wall of the insert below the lower O ri...

Page 12: ...ve all burrs with a file and sandpaper Bedding CAUTION Be sure the surfaces to be bedded are clean and dry Apply a 2mm 1 16 thick layer of marine sealant around the flange of the housing that contacts...

Page 13: ...s of the bushing that will contact the hull filling any cavities in and around the bushing marine sealant on flange stainless steel housing isolation bushing washer and sidewall of housing housing ins...

Page 14: ...keel of the boat At the center of the hole snap a chalk line parallel to the keel centerline Figure 6 2 From outside the hull push the housing into the mounting hole using a twisting motion to squeeze...

Page 15: ...in place Plastic housing Do not clamp tightly on the wrench flats fracturing the housing Plastic hull nut Hand tighten only Do not over tighten Metal hull nut Tighten with slip joint pliers Cored fibe...

Page 16: ...ly The arrow on the top of the insert the key on the insert the notch in the housing and the arrow on the flange will be aligned facing forward toward the bow Hand tighten only Do not over tighten NOT...

Page 17: ...skin to avoid accidentally cutting the outer skin 4 Remove the plug of core material so the inside of the outer skin and the inner core of the hull are fully exposed Sand and clean the inner skin core...

Page 18: ...ent disconnect it 2 Route the sensor cable to the instrument Do not fasten the cable in place at this time 3 Being sure the power is OFF connect the speed and temperature sensor cable to the instrumen...

Page 19: ...ng into the box 5 At the marked locations drill four 3mm or 1 8 holes approximately 10mm 3 8 deep At the marked location drill two 3mm or 1 8 holes approximately 10mm 3 8 deep 6 Fasten the processor t...

Page 20: ...t 2017 Airmar Technology Corp insert network backbone cable DeviceNet cable screw 4 processor sensor cable Figure 11 NMEA 0183 cable layout not to scale instrument Copyright 2017 Airmar Technology Cor...

Page 21: ...ert is suspected due to inaccurate readings from the instrument 1 The O rings must be intact and well lubricated to make a watertight seal On the blanking plug inspect the O rings replace if necessary...

Page 22: ...ithin weeks Clean the electrodes with fine grit wet dry sandpaper being careful to avoid making scratches Replacing the O rings 1 Install the yellow O ring near the top of the insert Figure 12 Install...

Page 23: ...ased a plastic housing and have a wood hull or desire greater strength purchase an Airmar metal housing Part Airmar Part Number Blanking Plug 33 538 01 Hull Nut 04 004 plastic 02 530 02 stainless stee...

Page 24: ...d sensor is ON when the boat is stationary you may see a speed readout of a fraction of a knot because of water movement under the hull If the speed reading is consistently the same percentage higher...

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