Winco PSS8B2W/C - Manual (Page 12)

PAGE 10 60706-182 8008-30
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 L2 and L6 in the
ASCO ATS on the generator terminal block in the ATS.
The voltage 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 termi-
nals (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 or approximately 121 to 124 volts AC between
both power feeds and neutral.
** 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.
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.
If you are not using the ASCO165 transfer switch you will
need to follow the information in the manual for your ATS
for initial starting and testing procedure. This procedure
will also test the interface between the transfer switch
and the engine generator set.
*************
***** WARNING *****
*************
PERSONAL INJURY HAZARD - Install front cover on
to transfer switch before operation. An electrical system
fault could cause a flash and severe personal injury.
1. 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.
2. Move the toggle switch in the generator from the
stop position to the auto position. The unit is now
ready to be operated from the Automatic Transfer
Switch.
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 accept-
able 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.
Once you are finished testing the transfer switch, this
completes your installation and unit testing. ALWAYS
leave the system in automatic mode unless servicing the
unit. For automatic operation, keep the generator set
mode switch in the “AUTOMATIC” position.