OPERATION
PRE-START INSPECTION
Before starting the generator for the first time, the following
inspection checks are recommended:
1. A visual inspection should be made for any loose parts,
bad connections, or foreign materials.
2. Bar the set over by hand for at least 2 revolutions to be
sure that there is no interference and that the set turns
freely. If the set does not turn freely, check for clearance
in the generator and exciter air gap.
3. Check all wiring against the proper connection diagrams,
and ensure that all connections and terminations are
tight and properly insulated.
4. Verify that all equipment is properly grounded (earthed).
MAGNAPLUS
®
GENERATORS MAY HAVE VOLTAGE
PRESENT AT THE LEAD TERMINALS WHEN THE
SHAFT IS ROTATING. DO NOT PERMIT OPERATION
OF THE GENERATOR UNTIL ALL LEADS HAVE
BEEN CONNECTED AND INSULATED. FAILURE TO
DO THIS MAY RESULT IN PERSONAL INJURY OR
EQUIPMENT DAMAGE.
5. Clear the surrounding area of any materials that could be
drawn into the generator.
6. Check all fasteners for tightness.
7. Check all access plates, covers, screens and guards. If
they have been removed for assembly or inspection,
reinstall and check for security.
8. Review all prime mover prestart up instructions, and
ensure that all recommended steps and procedures have
been followed.
9. Remove any masking materials affixed during painting.
Inspect the generator, prime mover, and any accessory
equipment to ensure that nameplates, and all safety
warning / caution signs and decals provided with the
equipment are in place and clearly visible.
Note: It is strongly recommended that the authority
having jurisdiction over the installation site be
consulted to determine if any additional warning or
caution notices, or additional safety devices are
required by local codes / standards. Any such
required notices or devices should be installed prior
to initial startup.
START-UP
The following procedure should be followed when starting the
generator set for the first time.
1. The generator output must be disconnected from the
load. Be sure that the main circuit breaker or fused
disconnect is in the open position.
2. Open the input power to the automatic voltage
regulator. Remove the fuse or disconnect and insulate
one of the regulator input power leads. (See separate
regulator manual)
3. Verify that all prime mover start-up procedures have
been followed.
4. If the unit is provided with space heaters, ensure that
they are de energized. In some installations, a set of
auxiliary contacts on the main circuit breaker or transfer
switch will automatically open the space heater circuit
when the generator is connected to the load.
5. Start the prime mover, and adjust it for proper speed. See
generator nameplate.
6. The purpose of this initial test with the regulator out of the
circuit is to detect any wiring mistakes without exposing
the unit to undue risk. Check all line to line and line to
neutral voltages for balanced voltage. If voltages are
balanced, shut down the set and reconnect the
regulator. If voltages are unbalanced, shut down the
equipment and check for improper wiring. If the
problem persists, consult the factory.
With the regulator de energized, the residual voltage
should be 10 - 25% of rated value. It is recommended
that this residual voltage and driver RPM be recorded for
use as a future troubleshooting benchmark.
THE FOLLOWING TEST MUST BE CONDUCTED BY
QUALIFIED ELECTRICAL PERSONNEL. LETHAL
VOLTAGE MAY BE PRESENT AT BOTH THE
GENERATOR AND VOLTAGE REGULATOR
TERMINALS DURING THIS PROCEDURE. CAUTION
MUST BE EXERCISED NOT TO COME INTO
PERSONAL CONTACT WITH LIVE TERMINALS,
LINKS, OR STUDS. SERIOUS INJURY OR DEATH
COULD RESULT.
7. Start the set and adjust the terminal voltage to the
desired value by means of the regulator voltage
adjustment. If the regulator is equipped with a stability
adjustment, follow the instructions in the regulator
manual to adjust the stability. Again, check all line to line
and line to neutral voltages for balance. It is
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