Airmar CS4500-610—Ultrasonic Speed - Manual (Page 6)

6
BR
N WHT GR
N BLK RED RE
D GR
N BA
RE WH
T
BRN
RE
D BL
K
BATTERY
INSTRUMENT
SENSOR
Wiring the Junction Box
CAUTION: Sensor cable—Do not attempt to connect the bare
wire and grey wire. The bare wire has been cut off flush with the
cable jacket, and the grey wire has been covered with protective
sleeving. Do not allow these wires to cause a short circuit within
the junction box.
1. From outside the junction box, carefully pull each of the cables
in turn until only 13mm (1/2") of the cable jacket remains inside
the box (see Figure 9).
2. Starting with the battery cable, wire each cable in turn to the
corresponding terminal block. Follow the color code on the PC
board. Insert the stripped end of a wire in the hole in the
corresponding terminal. Simultaneously depress the adjacent
button using a small blade screwdriver. Release the button to
lock the wire in place. Be sure the stripped end of the wire is
inserted up to the insulation only. Do not include any insulation
inside the terminal. Gently tug on the wire to ensure it is locked
in place. Repeat this process until all wires are connected.
3. Hand-tighten the nut on each compression bushing to make a
water-resistant seal.
4. Arrange the wires neatly inside the junction box being sure that
no bare wires are touching.
5. Attach the junction box cover with the screws provided for a
water-resistant seal.
6. Using the screws provided, attach the junction box to the
selected mounting surface at the holes previously drilled.
Wiring the Instrument
To connect the instrument cable to the display, follow the
instructions in your instrument owner’s manual for connecting a
speed sensor. See the color code below.
Red B+ (5 to 15VDC)
Green (GRN) signal
Bare ground
White (WHT) temperature
Brown (BRN) temperature
Wiring the Power Panel (Battery)
Be sure the power panel has a 0.5 amp fast blow fuse or circuit
breaker. Cut off the bare wire flush with the cable jacket. To connect
the power cable to the power panel, see the color code below.
Red V
+ (
10 to 15 VDC)
Black (BLK) V–
Troubleshooting
No Speed Reading
• Is the ultrasonic insert installed in the housing and connected to
the junction box?
• Is the ultrasonic insert oriented with the arrow on the top pointing
forward toward the bow? If the insert cannot be seated in the
housing with the arrow pointing forward, check that the arrow on
the flange of the housing is pointing forward. If this is not the case,
the housing needs to be reinstalled with the proper orientation.
• Is power being supplied to the junction box? The power must be
10 to 15VDC. At lower voltages performance is degraded and
the unit will shut down. If there is no voltage, check the wiring.
• Are the wire connections at the terminals in the junction box
tight and properly stripped of insulation?
• Does the color of each wire match the color label on the PC board?
Inaccurate Speed Readings
• If the ultrasonic speed 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
or lower than the true speed, the speed function within the
instrument needs to be re-calibrated. Follow the instructions in
your instrument owner’s manual.
• If speed readings are inaccurate above about 10knots:
- The sensor is installed in turbulent water. The cause may be
water intake or discharge openings, strakes, fittings, hull
irregularities upstream of the sensor, or the shape of the hull in
that area. The sensor must be reinstalled in another location.
- The ultrasonic insert is covered with aquatic growth. See
“Servicing the Ultrasonic Insert” on page 4.
- Aerated water is flowing under the sensor because the boat
is designed to pull air under the hull. The sensor will not work
on this type of boat.
Sensor Replacement & Parts
The information needed to order a replacement Airmar sensor is
printed on the cable tag. Do not remove this tag. When ordering,
specify the part number and date. For convenient reference,
record this information on the top of page one.
If you have purchased a plastic housing and have a wood hull or
desire greater strength, purchase a bronze housing. Lost, broken,
or worn parts should be replaced immediately.
Obtain parts from your instrument manufacturer or marine dealer.
Gemeco (USA)
Tel: 803.693.0777
Fax: 803.693.0477
email: [email protected]
Airmar EMEA Tel: +33.(0)2.23.52.06.48
(Europe, Middle East, Africa) Fax: +33.(0)2.23.52.06.49
email: [email protected]
Blanking
Plug
Cap Nut Hull Nut
Housing, Washer
& Hull Nut
O-ring &
Valve Kit
33-481-01
04-234-1 (plastic)
02-131-01 (bronze) 04-004 (plastic)
02-030 (bronze) 33-454-01
(bronze, B120)
33-450-01
Figure 9. Wiring the Junction Box
button
Copyright © 2002 - 2011 Airmar Technology Corp. All rights reserved.
AIRMAR
®
TECHNOLOGY CORPORATION
35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA
www.airmar.com
Copyright © 2002 Airmar Technology Corp.