Generator Frequency Adjustment; Electronic Governor - Westerbeke 5.5 kw EDC 60 HZ Operator's Manual

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 no-load voltage adjustment may also be
required in conjunction with the engine's speed adjustment.
These are not warrantable adjustments as they relate to nor-
mal break-in and maintenance.
Frequency is a direct result of engineigenerat<;>r speed, as
indicated by the following:
When the generator
is
rnn at 1800 rpm, the AC voltage
ontput frequency is 60 Herlz.
When the generator
is
rnn at 1500 rpm, the AC voltage
outpnt freqnency is 50 Hem.
Therefore to change the generator's frequency, the engine
speed must be changed. To accomplish 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 statting the engine make
cettain that everyone is clear of moving parts! Keep
away from pulleys and belts during test procedures.
2.
In
the control box on the generator
is
located the
Electronic Control Unit (ECU). Switch # I 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. Star! the engine and observe generator hertz
and no load AC voltage output. Adjust no load AC
out put as needed using the capacitor taps #7, #8 or #9
as needed to increase or decease no load AC voltage.
WHEN CHANGING THE GENERATORS
. FREQUENCY (50/60 HZ) SWITCH #1
ON THE CONTROL PANEL ECU
BOARD MUST BE SWITCHED:
ON FOR 50 HZ AND OFF FOR flO HZ.
SWITCHES
ELECTRONIC GOVERNOR
The Electronic Governor regclates the engirie sPeed by
sensing the engine's RPM with a magnetic pick-up at the
flywheel. The governor's controller continuously monitors
the engiries speed and if there is any discrepancy, the
controller signals the actuator and the actuator adjusts the
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 acI\I'lIOr wires fuim the wiring harness.
3. Measure the distance between the actuator and the engine
mounting smface as shown.
ACTUATOR
REFERENCE
ENGINE MOUNTING
'SURFACE
4. Back-offthe 1 7/16" jam nut and unscrew theaclllator.
5. Apply a small 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 Secure the actuator's position with the jam nut
(The standard distance is 13/16" to 7/8").
6. Reconnect the actuator wires and test the unit
1+---13/16" TO 7/8"
STANDARD
NOTE: Should the unit fail to shut down and only go to idle, Loosen
the jam nut and thread the actuator in LA to Y2 tum to obtain
proper shut down.
NOTE: For additional information.on Electronic Governing
Troubleshooting, refer to the booklet on our website for
diesel generators.
Ehglnes
&
Generators
. 24