Trouble shooting7
Electric motor does not operate
Check that the battery main switch is ‘ON’. -
Check whether the control panel fuse has burnt out. -
[1]
Check if the main fuse has burnt out. -
[2]
In all the above cases, the ‘POWER’ indicator LED is not lit.
The electric motor has overheated and its thermal Protection has -
broken the circuit of the control current.
The panel gives a warning signal three times ( . - . . - ) and the LED
will glow red.
As soon as the motor has cooled down enough, the LED will
resume glowing green and the bow thruster can be put back in
service.
Check if it is possible to turn the propeller. A piece of wood or similar
could have been caught between the propeller and the tunnel.
Electric motor turns slowly
The battery is at. -
Bad electrical connection(s) due to e.g. corrosion. -
The carbon brushes are not making proper contact. -
The battery capacity is reduced because of very low tempera- -
tures.
Weed or shing line has become caught in the propeller. -
Control panel fuse is burnt out
[1]
Short circuit in the operating circuit; check the wiring. -
Electric motor turns (too) fast but there is no thrust
The blades of the propeller have been damaged by a foreign ob- -
ject having entered the propeller or tunnel.
The drive pin on the propeller shaft has been broken by a foreign -
object having entered the propeller or tunnel.
Replace the drive pin and check the propeller ange for any dam-
age.
[1]
The control current fuse is in the bow thruster motor.
[2]
See table on page 69
Technical data8
Type : BOW3512C
Electric motor
Type : reversible DC motor
Voltage : 12 V DC
Current : 220 A
[3]
Rated output : 1.5 kW
No. of revolutions : 2600 rpm
Rating : S2 - 4 min.
[3]
Protection : IP44
Motors conform to CE (80/336/EEC, EMC - EN60945)
Transmission
Gears : Bevel gear helical teeth
Gear ratio : 1 : 1
Lubrication :
oilbath, approx. 0.04 litre (1.4 .oz.)
outboard gear oil SAE80W or EP 90
Housing : bronze
Propeller
Diameter : 146 mm (5 3/4”)
No. of blades : 6
Prole : asymmetrical
Material : polyacetal (Delrin ®)
Rated thrust : 350 N (35 kgf, 79 lbf)
Control circuit
Fuse : 5 A
Current solenoid switch : 2.8 A
Control circuit wires : 1.5 mm
2
(14 AWG)
Extension cable :
6, 10, 16, 18 or 20 m
(20’, 33', 52', 59', or 65')
Thrust-tunnel
Steel model
dimensions :
O.D. 159 mm,
wall thickness 4,5 mm
treatment :
blasted, coated with: SikaCor Steel
Protect. Suitable for all kinds of
protection systems.
Plastic model
dimensions : I.D. 150 mm, wall thickness 5.3 mm
material : glass bre reinforced polyester
Aluminium model
dimensions : I.D. 150 mm, wall thickness 5 mm
material :
aluminium, 6061 or 6062
(AlMg1SiCu)
Weight
Excl. thrust-tunnel : 12 kg (26 lbs)
Length of usage:
[3]
4 min. continuously or max. 4 min. per hour at 220 A (12 Volt)..
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