Winco PSS40LS/B - Manual (Page 13)

60706-162 Page 11
3127-00
6. Defective starter.
7. Defective start solenoid.
8. Locked up engine genset.
ENGINE CRANKS BUT WILL NOT START
1. Improper fuel pressure being delivered to
unit.
2. Fuel supply shut off.
3. Fuel tank empty.
4. Defective spark plug.
5. Defective engine ignition module.
6. Dirty air cleaner filter.
7. Defective fuel solenoid valve.
8. Low battery.
9. Defective demand regulator.
ENGINE STARTS AND THEN STOPS AND FAULT LIGHT
COMES ON
1. Engine is low on oil.
2. Engine has high water temperature.
3. Engine has overspeed.
4. Engine has gone into overcrank.
5. No output from engine alternator to engage
stop crank circuit.
ENGINE WILL NOT COME UP TO SPEED AFTER IT
STARTS
1. Insufficient fuel volume getting to the unit.
a.
Too small of fuel line.
b. Fuel pressure too low/high.
2. Engine set up for the wrong fuel.
3. Governor is defective.
4. AC short in generator components.
ATS PANEL WILL NOT TRANSFER TO EMERGENCY
SUPPLY (GENERATOR)
1. No AC generator output from generator.
2. Broken or defective mechanical/electrical
interlocks.
3. Defective holding coil in the generator side
contactor.
4. Wiring error between generator and transfer
switch.
5. Defective start/stop relay
ATS PANEL WILL NOT RETRANSFER TO NORMAL
POWER
1. Proper normal line power not available at line
terminals in ATS panel.
2. Defective holding coil in line side contactor.
3. Broken or defective mechanical/electrical
interlocks.
4. Defective start/stop relay.
5. Incorrect phase sequencing ( three phase only).
NO AC OUTPUT FROM GENERATOR
1. Defective rotating diodes.
2. Defective voltage regulator.
3. Defective rotor.
4. Defective stator.
5. Defective exciter rotor.
6. Defective exciter stator.
7. AC short in the output leads.
NG/ LP CONVERSION
**** CAUTION ****
EQUIPMENT DAMAGE - Do not make any fuel adjustments or
governor adjustments until all pressure readings are in compli-
ance with specification. See fuel pressure charts (tables 1, 2,
and 3).
The engine generator sets covered in this manual are shipped for
a specific fuel, either Liquid Propane (LP) vapor, Natural Gas
(NG) or Liquid Withdrawal Propane (LPG). If it should be
necessary to change the type of fuel used after a unit is received,
the following procedures are provided.
NOTE: For conversion to/from liquid withdrawal LP consult the
factory. Additional parts will be required for this conversion.
NATURAL GAS TO PROPANE VAPOR
1. Turn off fuel supply.
2. Remove the fuel line from the carburetor at the demand
regulator.
3. Remove the cap on the upright column of the regulator. This
will expose the pressure spring adjusting screw. Back off the
spring adjusting screw so there is just enough room to replace
the cover. Replace the cover.
4. Invert the regulator so it is positioned with the column
pointing down.
5. Reconnect the fuel line at the regulator.
6. Remove the 1/8 NPT plug (the one closest to fuel solenoid)
located on what is now the top of the regulator. Connect a fuel
pressure meter or a manometer where the plug has been
removed. Move the generator control switch to the run position.
As the unit starts to crank the fuel solenoid will open and you
should get a pressure reading of between 4 to 6 ounces (7 to 11
inches of water column).
7. If the pressure is correct, remove the meter and reinstall the
pipe plug.
8. Next the timing on the engine must be changed. As this unit
was shipped to operate on NG the timing advance was set at 36
degrees. For operation on LP it will be necessary for you to reset
the timing advance to 26 degrees.
9. You are now ready to make the final fuel mixture adjustment.
These engines were adjusted at the factory to produce about .7 to
3.4% CO. If you have the ability to test the CO, adjust the