Airmar B744V Bedienungsanleitung PDF herunterladen (Seite 6)

AIRMAR

TECHNOLOGY CORPORATION

35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA

www.airmar.com

4. With the arrow pointing forward, insert the blanking plug.

Secure it with the retaining pin, safety rings, and safety wire

(see Figure 8).

Cleaning the Multisensor

Aquatic growth can accumulate rapidly on the multisensor’s

surface reducing it’s performance in weeks. Clean the surface

with mild household detergent. If fouling is severe, use a stiff

brush or putty knife to remove the growth being careful to avoid

making scratches. The paddlewheel can be removed by pushing

out the shaft using a spare shaft or a 4D finish nail with a flattened

point. Then, wet sand the paddlewheel with fine grade wet/dry

paper.

Servicing the Paddlewheel Insert

The water lubricated paddlewheel bearings have a life of up to 5

years on low-speed boats [less than 10kn (11MPH)] and 1 year

on high-speed vessels. Paddlewheels can fracture and shafts can

bend due to impact with water borne objects and mishandling in

boat yards. O-rings must be free of abrasions and cuts to ensure

a watertight seal. A replacement Paddlewheel Kit 33-113 is

available.

1. Using the new paddlewheel shaft, push the old shaft out about

6mm (1/4"). With pliers, remove the old shaft (see Figure 9).

2. Place the new paddlewheel in the cavity with the flat side of the

blade facing the same direction as the arrow on the top of the

insert.

3. Tap the new shaft into place until the ends are flush with the

insert.

4. Install two O-rings in the lower groves near the paddlewheel.

Do not place them near the pull ring.

5. The remaining two O-rings are placed in a similar position near

the bottom on the blanking plug.

Servicing the Valve Assembly

Should the valve fail, remove it for servicing. A replacement

Paddlewheel and Valve Kit 33-218 is available.

WARNING: THIS IS NOT A WATERTIGHT OR SECURE SEAL!

The blanking plug cannot be secured without the valve assembly.

After removing the valve assembly, temporarily insert the

blanking plug, but do not leave the boat in the water unattended.

1. Inspect and lubricate the O-rings on the blanking plug with

silicone grease or petroleum jelly.

2. Remove the safety wire and unscrew the cap nut. With the

blanking plug ready in

one hand, remove the

paddlewheel insert and

valve assembly as one

unit by grasping the pull

ring and pulling upward

(see Figure 8). Rapidly

replace the valve

assembly with the

blanking plug to

minimize the flow of

water into the boat.

Temporarily secure it

with the safety wire.

3. Separate the paddlewheel insert from the valve assembly by

removing one safety ring and the retaining pin. Grasp the pull

ring and pull slowly upward (Figure 9).

4. Clean, repair, or replace the valve assembly so that the flap

valve moves freely and seats against the sleeve (see

Figure 11).

Warning: If a new valve assembly is required and not

immediately available, the valve sleeve must be reinstalled in

the multisensor housing for a watertight seal. Remove the flap

valve, spring pin, and spring from the sleeve.

5. To reinstall the valve assembly, inspect and lubricate the

O-rings on the paddlewheel insert with silicone grease or

petroleum jelly (see Figure 9).

6. Slide the paddlewheel insert into the valve assembly. Seat it in

place with a twisting motion until the keys fit into the notches.

Secure the paddlewheel insert with the retaining pin and safety

rings (see Figure 8).

Caution: Be careful to avoid cross threading the cap nut.

7. Remove the safety wire from the multisensor. With the valve

assembly ready in one hand, remove the blanking plug. Slide

the assembly into the multisensor housing with the arrow on the

top pointing forward (see Figure 8). Be sure the cable fits into

the cable channel and the key in the housing fits into the notch

in the sleeve (see Figure 11). (A pushing twisting motion will

locate the key.) Screw the cap nut in place and hand-tighten it

only. Do not over tighten.

8. Reattach the safety wire (see Figure 8).

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.

Winterizing

After the boat has been hauled for winter storage, remove the

insert to let the water drain away. This will prevent any water from

freezing around the insert and cracking it.

Replacement Parts

Lost, broken, and worn parts should be replaced immediately and

can be obtained through your marine dealer or instrument

manufacturer.

Part Part No.

Paddlewheel Kit 33-113

Paddlewheel & Valve Kit 33-218

Replacing the Multisensor

The information needed to order a replacement Airmar

multisensor is printed on the vinyl tag affixed to the cable near the

connector end. Do not abrade the marking or remove this tag.

When ordering, specify the frequency, date code, and part

number.

Model Cap Nut Hull Nut Fairing Blanking Plug Insert

B744V 04-234-1 02-030 33-353-01 20-175-5 20-752-1

B744VL 04-234-1 02-030 33-353-01 20-175-2 20-752-3

B66V 04-234-1 02-030 33-029 20-175-5 20-752-1

B66VL 04-234-1 02-030 33-029 20-175-2 20-752-3

Figure 11. Valve assembly

sleeve

flap

spring

cable

notch

channel

valve

1 2 3 4 5 6

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