Gillette Generators SP-1500 - Manual (Page 26)

PAGE 26
for Buyer to know, that all ATS operating methods,
parts supplied, operational services, warranties, etc.
are the responsibilities of chosen ATS supplier.
However, GILLETTE’S responsibilities are to ensure
all such requirements are carried out, by the
selected ATS vendor.
A) 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 Switch (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.
B) 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, or GILLETTE Engineering
Department for any different ATS system and its
method of operation.
D) 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 "AUTO-START" LED (located on control
panel) will turn on waiting for up to 10 seconds
(normal time delay to start) until engine begins to
start and run. (This may be set to 0 seconds depend-
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
ing 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.
E) 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 “AUTO-START” light will
go off. 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 ATS 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 10 amp cartridge fuse,
while working on or around the generator set, or
accompanying automatic transfer switch.