Winco PSS12H/A - Manual (Page 12)

PAGE 10 60706-157 3063-10
Move the selector switch on the engine generator set to
the “AUTOMATIC” position. Next move the selector switch
on the A.T.S. panel to the “START” position. The unit will
go into a 3 to 10 second start delay and then start up. If it
fails to start at this time, check your DC interconnection
wiring. When the selector switch on the A.T.S. is moved to
the “DISABLE” position the unit will go into a cool down
period and then shut off. As long as line power is still
applied to the transfer switch during this test period the
A.T.S. will not transfer the load to the generator.
Next you need to test the complete system. To accom-
plish this you will have to fail the incoming line power to
the A.T.S. panel. First move both selector switches to the
automatic position. Then fail the incoming power. All the
loads connected to the A.T.S. should now be dead. The
engine generator set will go into a 3 to 10 second start
delay. At the end of the start delay the unit will start up. As
soon as the engine generator set reaches operating
speed the generator side contactor will close and the
load will be applied to the engine generator.
Restoring the line power will cause the generator side
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.
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
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 on 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 on 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.
9. Oil in the bottom of air cleaner from crankcase
breather.