Engine Adjustment - GE HOME GENERATOR SYSTEM 18000 WATT Installation And Start-Up Manual

engine adjustment

There are regional variances in the composition of natural
gas. Each home generator unit leaves the factory set for
NG operation. If the generator output voltage or frequency
measured during Initial Start-Up is outside the listed ranges,
the combustibility of the gas supplied at the installtion
site may be substantially different from the fuel used at
the factory.
To adjust the engine for this difference, proceed as follows.
1. Remove four screws that hold circuit breaker cover to
air intake guard.
2. Connect an accurate frequency meter to line side of
generator's circuit breaker.
3. Ensure that the 15 Amp fuse is installed.
4. Set the generator's circuit breaker on.
5. Set the generator's system switch to auto.
6. Push ManuaL oVer-riDe button on control panel.
When the engine starts, allow it to warm up for
five minutes.
7. Normal no load frequency is 62.0 to 62.5 Hz. If
adjustment is needed at no load, slowly rotate the
governor adjustment screw (B) clockwise and/or
counterclockwise until frequency is 62.0 to 62.5 Hz.
B
8. Turn service disconnect to transfer switch off.
After a short time delay, transfer switch will connect
to generator.
9. Load generator to full load.
10. After load stabilizes, frequency should be
above 57.0 Hz.
11. If frequency is below 57.0 Hz, slowly rotate the
governor adjustment nut or screw clockwise and/or
counterclockwise until frequency is above 57.0 Hz.
12. Turn service disconnect to transfer switch on.
Transfer switch will connect to utility power after
five minutes.
13. Push and hold ManuaL oVer-riDe button on
control panel until engine stops.
14. After the engine has stopped:
• I f an adjustment was made in step 11, repeat steps
2 through 7.
• I f an adjustment was not made in step 11, proceed
to step 15.
If no load frequency falls out of the no load range shown
in step 7 after full load adjustment is made, contact an
authorized service center.
15. Reinstall circuit breaker cover.
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