Winco ULPSS12H4W/E, Installation And Operator'S Manual

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With the engine running smoothly, check the no load
voltage and frequency at wire # and # 4 (L2 and
L6 in the ASCO ATS) on the generator terminal block
in the ATS. The voltage should be 240 volts plus or
minus nominal. The frequency should be between
6.5 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 on half of the line to line voltage.
** NOTICE **
If for any reason during the check out procedures
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 cor-
rect, move the right hand toggle switch to the AUTO
position. The unit should shut off with no time delay.
The right hand toggle switch must be left in the
AUTO position for proper operation of the gen-
erator.
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 trou-
blshooting section in the transfer switch manual.
. Move the left hand toggle switch from the OFF
position to the ON 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 sys-
tem 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 nomi-
nal. If not, troubleshoot your utility source before
continuing.
3. Turn on the altenate source (generator) curcuit
breaker.
There are two ways to test your transfer switch
operation: WITHOUT a load transfer or WITH a
load transfer.
WITHOUT load transfer (normal exercise)
. Press and release the Push to Test button.
The generator set should start immediately. About
5 seconds the generator (alternate source) accept-
able light comes on and stays on.
2. The generator set runs for 20 minutes. The
Transfer Switch does not transfer the load to the
generator set. The Transfer Switch on utility (pre-