Winco PSS20000/C - Manual (Page 15)

PAGE 13
contactor in the A.T.S. to open. The line side contactor will
close as soon as the generator side contactor clears the
mechanical interlock and closes the electrical interlock.
These interlocks ensure that you get a clean ‘break
before make’ action in the transfer switch.
The restoration of line power also sends a stop signal
to the engine generator set. This stop signal will activate
a cool down timer circuit. The engine generator will shut
down 90 seconds later on the PSS8000 & PSS12000, 3
minutes later on the PSS20000.
This completes your installation and unit testing.
ALWAYS leave the system in automatic mode unless
servicing the unit. For automatic operation, keep both the
generator set and transfer selector switches in the
“AUTOMATIC” position.
TROUBLESHOOTING TABLES
PSS8000
UNIT WILL NOT CRANK WHEN THE
POWER FAILS.
1. Alarm light on, from previous run cycle
2. Generator control switch not in “AUTOMATIC”
position.
3. Transfer control switch not in “AUTOMATIC”
position.
4. Low or dead battery, must hold 12 volts during
cranking
5. Incorrect wiring between transfer switch and
generator.
6. Defective start/stop relay in the transfer switch.
7. Circuit breaker tripped on engine control.
8. 3/4 amp fuse blown inside engine control.
9. Defective engine control module.
10. Loose or dirty battery terminals
11. Defective “Run/Auto” switch
12. Defective starter.
13. Defective start solenoid.
ENGINE WILL NOT CRANK WITH GENERATOR
SELECTOR SWITCH IN THE RUN POSITION.
1. Low or dead battery, must hold 12 volts during
cranking
2. DC circuit breaker on control module tripped.
3. 3/4 amp fuse blown inside control module.
4. Defective engine controller.
5. Loose or dirty battery terminals
6. Defective “Run/Auto” switch
7. Defective starter.
8. Defective start solenoid.
9. Locked up engine generator set.
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 voltage from battery to fuel solenoid, must
hold 12 volts during cranking.
ENGINE STARTS AND THEN STOPS AND
FAULT LIGHT COMES ON.
1. Engine is low on oil.
2. No AC output from generator to engage stop
crank circuit.
ENGINE WILL NOT COME UP TO SPEED
AFTER IT STARTS.
1. Insufficient fuel volume getting to the unit.
a.
Fuel line too small.
b. Low fuel pressure.
2. Fuel load block needs to be adjusted.
3. AC short circuit.
4. Wiring to the A.T.S. panel crossed or shorted.
5. Unit is overloaded, check load amperage.
ATS PANEL WILL NOT TRANSFER TO
EMERGENCY SUPPLY (GENERATOR).
1. No AC generator output from generator.
2. Broken or defective mechanical/electrical inter
locks.
3. Defective holding coil in the generator side
contactor.
4. Wiring error between generator set and transfer
switch
5. Defective start/stop relay in ATS.
ATS PANEL WILL NOT PULL IN ON
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 inter
locks.
4. Defective Start/stop relay in ATS.
NO AC OUTPUT FROM GENERATOR.
1. Diodes on rotor blown.
2. Defective capacitor(s).
3. Defective rotor.
4. Defective stator.
5. AC short in the output leads,
6. Unit has lost its residual voltage.
7. Rotor loose on engine crankshaft.
8. Low engine speed, must be 3600 RPM
9. AC short on output leads.