Gillette Generators SPP-180 - Manual (Page 21)

PAGE 21
voltage and frequency at no load conditions. Typical
no load test readings should be 230-245 volts at 61.0-
61.5 hertz. After all meter tests are complete, return
the “MODE SELECTOR” switch to the “OFF/RESET”
position. The engine will then shut down.
STEP 4: When all connections, adjustments, and tests
are completed, and the automatic transfer switch is
installed and wired, the standby generator system is
ready to be placed on standby duty. When testing the
packaged standby set, using the furnished Automatic
Transfer Swtich (ATS), refer to included wiring
diagrams & ATS owners manual. For an ATS system
furnished by others, follow instructions and wiring
diagrams furnished with the separate ATS system.
STEP 5: EXERCISER: Each automatic transfer switch
has an exerciser circuit that automatically starts and
runs gen-set for a predetermined time, before it shuts
down. This “Trial Run” feature is to ensure that
system is working and ready to use, when you need
it, the most. The automatic engine exerciser must be
set for the automatic time to come on, run for a pre-set
time, then automatically shut itself down. The
installer must set the initial exercising time,
depending on the needs of owner. Review the ATS
manual for exercising operation.
IT IS IMPORTANT TO KNOW, THAT WHEN
EXERCISING
THE SELECTION OF NOT
TRANSFERRING THE LOAD TO THE
GENERATOR SET, IS THE MOST DESIRABLE
METHOD.
It is possible that a different auto transfer switch may
be used, rather that the Gillette furnished automatic
transfer switch (ATS). In this case, any different style
or brand, 2-wire ATS will work with generator
circuitry. Consult the owners guide and its wiring
diagrams, for any different ATS system, for its method
of operation.
STEP 6: Simulate a utility power failure by turning off
disconnect switch, installed between utility power
and auto transfer switch. The auto transfer switch will
activate. The "Engine Running" LED (located on
control panel) will flash repeatedly for up to 10
seconds (normal time delay to start) until engine
begins to start and run. (This may be set to 0 seconds
depending on the specific setup at this location.) The
auto transfer switch will switch the connected load
from utility to emergency generator power.
Note that engine generator set must start under an
immediately applied load. In most cases, the gen-set
is strong enough to perform under this demanding
scenario. However, if the load is 75% or more
inductive (large motors, UPS systems, large air
conditioners), it may be necessary to install a time
delay device, allowing gen-set to get up and running
(approx. 10 seconds), then allow load to be applied.
STEP 7: Return the disconnect switch to on position,
allowing utility power, to no longer be interrupted.
The auto transfer switch will sense this and switch the
connected load from emergency generator power,
back to utility power. The engine will continue to run
for 2 minutes and will allow engine and generator to
normally cool down, without connected load.
Optional: The sensing device may not always be 2-
wire automatic transfer switch. Many auto start/stop,
2-wire sensing devices such as pressure switch, float
switch, temperature switch, may control the start/stop
functions of Sentry-Pro gen-sets, under special
custom applications. However, the operating
procedures, as described above, are always the
same.
AIR FILTER: remove air filter cover and existing air
filter element and foam element. Reassemble air
filter with new air filter elements in place. Do not oil
the filter elements.
OIL FILTER: remove oil filter by turning it
counterclockwise, using an oil filter wrench. Clean
the gasket sealing surface of oil filter holder. Apply a
light coat of clean oil to the rubber seal of the new oil
filter. Dispose of old filter in an environmentally safe
manner. NOTE: Best time to replace oil filter is
during time of oil change, when oil is drained from
engine.
GENERAL SERVICE TIPS
CAUTION
If the 3 position switch is left in the “STANDBY”
position at any time, the generator system is being
serviced or repaired, the engine may crank and start
without warning. Such automatic starting may
happen when utility voltage dips below a preset
voltage level or during a normal exercise period. To
prevent possible injury that may be caused, always
set the “TEST-OFF/REST-STANDBY” switch to “OFF/
RESET” position and remove the 20 amp cartridge
fuse, while working on or around the generator set,
or accompanying automatic transfer switch.
CAUTION
THE ELECTRIC LOAD TO BE APPLIED TO
GENERATOR SET MUST NEVER BE MORE THAT
GENERATOR RATINGS. THE GENERATOR IS
RATED
IN WATTS. CALCULATE THE
ELECTRICAL LOAD TO BE APPLIED TO
GENERATOR IN WATTS. NEVER EXCEED 75%
OF
GENERATOR RATING IN ACTUAL