Winco PSS12H2W/A - Manual (Page 12)

PAGE 10 60706-165 3315-10
PROCEDURE
Move the selector switch on the engine generator to the
“RUN” position. The engine-generator will crank and
start automatically. If the engine fails to start, return
selector switch to the “stop” position and correct the
trouble before proceeding.
With the engine running smoothly, check the no load
voltage and frequency at terminals G1 and G3 on the
generator terminal block in the A.T.S. The voltage
between G1 and G3 should be between 242 to 248 volts.
The frequency should be between 61.5 to 62 hertz (Hz).
The voltage should also be checked between the hot
terminals (G1 and G3) and the G-N to be certain of a
balanced voltage output and a solid neutral connection.
The voltage between G1 and G-N should be about one
half of the line to line (G1 to G3) voltage or approximately
121 to 124 volts AC. The same approximate voltage
should be found between terminals G3 and G-N.
** Notice **
If for any reason during the check out procedure the
voltage and frequency are not correct, turn the selector
switch to the “STOP” position and correct the trouble
before proceeding.
After verifying the voltage and frequency are correct, turn
the selector switch to the “STOP” position. The unit
should shut off with no time delay. You are now ready to
test the automatic start function.
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.