Winco PSS15B4W/D - Manual (Page 13)

PAGE 11 7340-20 60706-185
PROCEDURE
Engine Generator Set only
Move the right hand toggle switch from stop to the normal
position. The alarm light should go out. Next move the left
hand toggle switch from the auto to the run position. You
should hear the fuel solenoid engage at this time. Next lift
the toggle switch to the start position and hold. The
starter should engage and the engine will start. As soon
as the engine starts release the toggle switch and it will
return to the run position. If the engine does not start after
15 seconds release the switch and let the starter rest for
15 seconds and reattempt to start. If the unit still will not
start, consult the troubleshooting guide in the back of this
manual.
With the engine running smoothly, check the no load
voltage and frequency at wire #1 and #4 (L2 and L6 in the
ASCO ATS) on the generator terminal block in the A.T.S.
The voltage should be 240 volts plus or minus nominal.
The frequency should be between 61.5 to 62 hertz (Hz).
The voltage should also be checked between the hot
terminals (L2 and L6) and the neutral to be certain of a
balanced voltage output and a solid neutral connection.
The voltage should be about one half of the line to line
voltage.
** Notice **
If for any reason during the check out procedure the
voltage and frequency are not correct, move the toggle
switch to the “STOP” position and correct the trouble
before proceeding.
After verifying the voltage and frequency are correct,
move the left hand toggle switch to the auto position. The
unit should shut off with no time delay. The left hand
toggle switch must be left in the AUTO position for
proper operation of the generator. If you leave it in the
run position the fuel solenoid will remain open and it will
not shutdown properly after the next exercise period.
Transfer Switch & Engine Generator
This procedure checks the electrical operation of the
automatic transfer switch. If the actual operation does not
follow this procedure, consult the troubleshooting section
in the transfer switch manual.
1. Move the right hand toggle switch from the stop
position to the normal position. The alarm light should
go out. The unit is now ready to be operated from the
Automatic Transfer Switch.
*************
***** WARNING *****
*************
PERSONAL INJURY HAZARD - Install front cover in
transfer switch before operation. An electrical system
fault could cause a flash and severe personal injury.
2. Turn on the preferred source (utility) circuit breaker.
The utility source acceptable light should now come on
as well as the transfer switch on utility light. If these
lights fail to come on recheck your incoming power to
insure you have 240 volts nominal. If not, troubleshoot
your utility source before continuing.
3. Turn on the alternate source (generator) circuit
breaker.
4. Press and hold the Push to Test button until the
generator (alternate source) acceptable light comes on
and stays on. Then release the button. This will start
up your generator set.
This light indicates that the generator is running and
the output voltage and frequency are within acceptable
limits. Under normal conditions this light should come
on in 5 to 10 seconds. If the light does not come on
and stay on a malfunction has occurred. Either the
unit didn’t start or the voltage or frequency is incorrect.
Correct the problem before continuing.
5. About 15 seconds after the generator (alternate
source) acceptable light comes on, the automatic
transfer switch should transfer the load from the utility
to the generator. At that time the Transfer Switch on
generator light should come on.
6. The generator will stay connected to the load for
about 5 minutes at which time the transfer switch will
transfer the load back to the utility. At the time it
transfers back to utility the Transfer Switch on Utility
light should come on and the Transfer Switch on
generator light should go out. To bypass this five
minute time delay you can press and release the Push
to Test button again at any time.
7. After the load retransfers to the utility the generator
will continue to run for about 1 minute (without a load)
and then shut down. The Generator acceptable light
will go off indicating the generator set has shut down.
This completes the functional test of the transfer switch
and the generator set. If you want to leave the generator
in the Automatic Start mode you can leave the right hand
toggle switch on the generator in the normal position. If
you have additional work to do or don’t want to leave the
engine generator set in the automatic start mode move