Table of Contents
Advertisement
ENGINE ADJUSTMENTS
GENERATOR FREQUENCY ADJUSTMENT (HERTZ)
Once the diesel generator set has been placed in operation;
there may be adjustments required for engine speed (Hertz)
during the engine's break-in period (first 50 hours) or after
this period. A fio-Ioad voltage adjustment may also be
required in conjunction with the engine's speed adjustment
These are not warrantable adjustments as they relate to nor-
ma! break-in and maintenance.
Frequency is a direct result of engine/generator speed, as
indicated by the following:
When the generator is run at 1800 rpm, the AC voltage
ontpnt freqnency is 60 Hertz.
When the generator
is
run at 1500 rpm, the AC voltage
outpnt freqnency
is
50 Hertz.
Therefore to change the generator's frequency, the engine
speed must be changed. To accomplisli the frequency change,
perform the following:
.
1. With the engine stopped, connect the AC output leads to
the AC terminal block in accordance with the AC voltage
connections diagram specified for your generator set, and
change the Hertz circuit connection to the capacitor.
These connections are shown in the GENERATOR sec-
tion of this manual. .
A
WARNING:
Before starting the engine make
. certain that everyone is clear of moving parts! Keep
away from pulleys and belts during test procedllres.
2. In the control box on the generatOr is located the
Electronic Control Unit (BCU). Switch # 1 contois
engine speed/generator frequency. ON for 50 Hz
and OFF for 60 Hz. Select
the
correct switch position
for the desired operating hertz.
3. Start the engine and observe generator hertz and no
load AC voltage output. Adjust no load AC out put
as needed. Refer to page 38 of this manual.
WHEN CHANGING THE GENERATORS
. FREQUENCY (50/60 HZ) SWITCH #1
ON THE CONTROL PANEL ECU
BOARO MUST BE SWITCHED:
ON FOR 50 HZ ANa OFF FOR 60 HZ.
SWITCHES
ELECTRONIC GOVERNOR· .
The Electronic Governor regll!lrtes the engille-speed by
sensing the engine's RPM with a magnetic pick-np at the
flywheel. The governor's controller continuously monitors
the
engines speed and
if
there is any discrepancy, the
controller signals the actuator and the actnator adjusts the
I
engine to the desired speed electronically.
Actuator
ENGINE MOUNTING
SURFACE
The following instructions are for adjusting or replacing
the actuator.
1. Shut-off the DC power to the generator.
2. Disconnect the acruator
wires
from the wiring harness .
3. Measure
the
distance between the actuator and the engine
mounting surface as shown.
ACTUATOR
MEASURE FOR
REFERENCE
ENGINE MOUNTING
·SURFACE
JAM NUT
4. Back-offth~ 1 7/16" jam nut and unscrew theactnator.
5_ Apply a stnall amount of teflon sealant to the replacement
actuator and screw the actuator into the engine's
mounting boss. Maintain the same distance between the
actuator and the engine mounting surface as previously
measured Secnre the actuator's position with the jam nut.
(The standard distance is 13/16"to7/8").
6. Reconnect the actuator wires and test the unit.
SCREW IN
NOTE: Should the unit fail to shut down and only go to idle. Loosen
the jam nut and thread the actuator in
L,4
to 1h. tum to obtain
proper shut down.
NOTE: -For additional information on Electronic Governing
. Troubleshooting, refer to the booklet on our website for
diesel generators.
: Engines
&
Generators
24 "
Advertisement
Table of Contents
Troubleshooting
