503 Fault Finding Manual
Rutland 503 Windcharger
Fault Finding Guide
Document No. SM-118 Issue A
INTRODUCTION
This manual contains important information concerning fault
finding on your Rutland 503 Windcharger.
It is strongly recommended that you read this manual and
familiarise yourself with its contents before attempting to
repair the Windcharger system.
To use this fault finding guide, open out this flow chart, select
the symptom in the left hand column & follow the arrows &
instructions.
WARNING!
• When turning, the Windcharger is capable of generating
voltages in excess of the nominal voltage. Caution must be
exercised at all times to avoid electric shock.
• No attempt to repair the system should be made until the
wind generator is restrained from turning.
• The Windcharger is fitted with ceramic magnets which can
be damaged by heavy handling. The main generator assembly
should be treated with care during transit and assembly.
• It is essential to observe the correct polarity when
connecting the Windcharger and all other components into an
electrical circuit. Reverse connection will damage the
Windcharger and incorrect installation will invalidate the
warranty.
• If in doubt, refer to your dealer, a competent electrical
engineer or the manufacturer.
WG503 Fault Finding Guide
Notes:
1. Insufficient Wind / Turbulence
Please see page 4 of the WG503 Owners Manual “Siting the Windcharger”Document No SM-115 supplied with the WG503.
2. Turbine Not Turning
A. Check for a short circuit in the system. Ensure there are no wires trapped or
shorted to the supporting pole or other earth on the system. Ensure all wiring is
connected correctly and securely.
B. Check that the generator hub is running freely by rotating the hub by hand. If it
does not, it could be due to a mechanical defect inside the hub. If the hub produces
a rumbling sound, this could be due to faulty bearings which should be replaced.
3. Check Brushes and Slipring
• Remove the generator from it’s mounting & place it face down on a suitable flat
surface.
• Remove the 2 screws which secure the tail fin in place, remove the tail fin. Slide
the nacelle from the protruding semi-circular casting to expose the rectifier
assembly.
• Remove each brush holder cap in turn & withdraw the carbon brush.
Check the brushes for signs of damage or overheating, overheating indicates that at
some time the battery has been connected with reverse polarity.
• Replace brushes if necessary.
• Replace the brush holder caps tightly.
4. Check Battery Condition.
• Check that the battery voltage is correct for the system.
• Check the battery terminal voltage.
• Check electrolyte level if a non-sealed battery is fitted.
5. Check Regulator.
This section applies to the SR60 regulator. If you have a RWS60 or other regulator,
please refer to the regulator manual.
Before attempting to bench test the regulator, disconnect it from the system & reconnect the wind generator directly to the battery, if the system now charges as
expected this indicates that the regulator is at fault, if the symptoms are still
unchanged then this indicates the fault is elsewhere.
In order to check the regulator it is necessary to use a variable d.c power supply
together with a voltmeter and ammeter, if this equipment is not available the regulator
must be returned to the manufacturer.
• Connect the Black lead of the SR60 to the negative of the power supply.
• Connect both the Brown and the Red leads of the SR60 to the positive of the
power supply.
Document SM-118 Issue A
Marlec Engineering Co Ltd
WG503 Fault Finding Guide
• Slowly increase the voltage of the power supply until 13.8v is reached, at this point
the regulator will begin to draw current, a further increase of the power supply
voltage will cause the Regulator to draw more current.
• The built in blocking diode can be checked using a multimeter set to Ohms range
applied between the Red & Brown leads of the Regulator. Positive lead to Brown,
negative lead to Red should show continuity. Positive lead to Red, negative lead to
Brown should show no continuity.
• If the Regulator does not operate as above it should be returned to the
manufacturer or replaced.
6. Check Rectifier.
• It is first necessary to remove the generator and it’s nacelle cover as in Note 3.
• Un-solder the 3 stator output leads from the rectifier.
• Using a multimeter on Ohms range, the rectifier can be tested as follows.
Red lead to +ve brush holder, Black lead to each a.c terminal - No Continuity
Black lead to +ve brush holder, Red lead to each a.c terminal - Continuity
Red lead to -ve brush holder, Black lead to each a.c terminal - Continuity
Black lead to -ve brush holder, Red lead to each a.c terminal - No Continuity
+VE
AC
AC
-VE
• If the rectifier does not check out as above it should be replaced.
• Re-solder the 3 stator output leads to the rectifier.
7. Check Winding.
• It is first necessary to remove the generator and it’s nacelle cover as in Note 3.
• De-solder the 3 stator output leads from the rectifier.
• Using a multimeter on Ohms range or an Ohmeter, measure the resistance between
2 of the 3 leads, the reading should be approx 1.8Ω at 20°C.
• Repeat the process for each combination of 2 leads, in each case the readings
should be approximately the same.
• If the resistance measured is greatly different from above, the winding should be
replaced.
Document SM-118 Issue A
Marlec Engineering Co Ltd
WG503 Fault Finding Guide
8. Check System Wiring
• Check all wiring & connections between the wind generator, regulator and
battery for damage, corrosion & open circuit or poor/loose connections.
Document SM-118 Issue A
Marlec Engineering Co Ltd
WG503 Fault Finding Guide
Exploded View 1. Main assemblies.
Item No
Description
Marlec Part No
1
Nose Dome
05-034
2
Hub assembly (Exploded view 2)
SA-50/10
Including:
Magnet assembly Qty 2(Item 9)
Turbine Blade (Item 10)
Bearings Qty 2 (Item 11)
Stator Winding (Item 12)
3
Nacelle Back Plate
05-035
4
Wind Shaft casting Assembly (Exploded view 3) SA-50/13
Including:
Windshaft casting
Brush Holder/Brush kit (item 13)
5
Post Adaptor assembly
SA-50/14
Including:
Post Adaptor
Post Shaft
Bearing (Item 15)
Bearing (Item 16)
Slipring (Item 17)
Associated fasteners
6
Rectifier assembly
SA-50/16
7
Nacelle
05-031
8
Tail assembly
SA-50/15
Items above with Part Nos prefixed ‘SA’ are supplied ready assembled.
Document SM-118 Issue A
Marlec Engineering Co Ltd
WG503 Fault Finding Guide
Components of assemblies with Item numbers are available separately.
Exploded view 2. Hub assembly
Item No
Description
9
Magnet assembly (pair)
10
Turbine Blade
11
6002ZZ bearing (2 per hub)
12
Stator winding (including bearings)
Document SM-118 Issue A
Marlec Part No
SA-50/12
05-001
921-014
SA-50/11
Marlec Engineering Co Ltd
WG503 Fault Finding Guide
Exploded view 3. Wind shaft casting assembly
Item No
Description
13
Brush Holder/Brush Kit
14
Brush 4x4x15 (2 per unit)
Marlec Part No
SA-10/04
917-001
Exploded view 4. Post adaptor assembly.
Item No
Description
15
6000ZZ bearing
16
6202ZZ bearing
17
Slipring
Marlec Part No
921-009
921-001
919-001
Document SM-118 Issue A
Marlec Engineering Co Ltd
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