Airmar CS4500-650—Ultrasonic Speed - Manual (Page 5)

5
Winterizing
After the boat has been hauled for winter storage, remove the
long blanking plug to let the water drain away before reinserting it.
This will prevent any water from freezing around the blanking plug
and possibly cracking it.
Wiring
Tools & Materials
Pencil
Drill
Drill bit: 3mm or 1/8"
Cutting pliers
Phillips screwdriver
Wire strippers
Heat-shrink tubing
Heat gun
Blade screwdrivers
Locating the Junction Box & Cable Routing
CAUTION: Minimize electrical interference by separating the
sensor cables from other electrical wiring and the engine.
CAUTION: Be careful not to tear the cable jackets when passing
them through the bulkhead(s) and other parts of the boat. Use
grommets to prevent chafing.
1. Select a convenient, dry, mounting location for the water-
resistant junction box, about 1–2m (3' – 5') from the instrument
(see Figure 7).
2. Route the sensor cable to the proposed location of the junction
box. Do not fasten the cable in place at this time.
3. Hold the junction box at the selected location and mark the
position of the four screw holes with a pencil.
NOTE: If the junction box will be mounted on a vertical surface,
face the compression bushings downward to avoid water
seeping into the box.
4. At the marked locations, drill a 3mm or 1/8" hole to a depth of
10mm (3/8"). Do not screw the junction box in place at this time.
5. Route the instrument cable to the junction box. Cut the cable
50cm (2') beyond the junction box to allow for wiring ease.
Do not fasten the cable in place at this time.
6. Route the power cable from the battery to the junction box.
Allowing 25cm (10") at each end for wiring ease, cut the cable
to length. Do not fasten the cable in place at this time.
Preparing the Cables
CAUTION: Be careful not to damage the printed circuit board.
1. Be sure the power is ‘OFF’. Remove the junction box cover
and set it aside along with the screws (see Figure 8).
2. Carefully push approximately 200mm (8") of the power cable
through the left compression bushing.
3. Carefully push approximately 200mm (8") of the instrument
cable through the center compression bushing,.
4. Carefully push approximately 200mm (8") of the sensor cable
through the right compression bushing.
5. Strip 60mm (2-1/2") of the outer jacket and foil shielding from
the cut ends of the power and instrument cables (see Figure 9).
NOTE: The grey wire is covered with protective sleeving and
this must remain in place.
6. Strip 11mm (3/8") of conductor insulation from the end of each
insulated wire in the power and instrument cables.
7. Protect the cable’s foil shielding from causing a short inside the
junction box. Place heat-shrink tubing around the jacket where
the wires emerge from the cable. It must overlap the wires a
minimum of 6mm (1/4"). Use a heat gun to shrink the tubing.
Figure 7. Cable layout
60mm (2 1/2")
remove outer jacket
10mm
(3/8")
cable
jacket
remove
insulation
Figure 9. Preparing the cable—instrument cable shown
heat-shrink
tubing
instrument
power panel
sensor
(battery)
compression
Figure 8. Junction box
screw hole (4)
BR
N WH
T
GR
N BL
K RE
D RE
D GRN BAR
E
WHT BRN
RE
D BL
K
BATTERY
INSTRUMENT
SENSOR
bushing (3)
grey
wire with
protective
sleeving
Copyright © 2002 - 2011 Airmar Technology Corp.
Copyright © 2002 Airmar Technology Corp.
Copyright © 2002 Airmar Technology Corp.