Field Troubleshooting
Instruction and Service Manual
38
Pacific Scientific REDI-LINE Generators
Other Troubleshooting Checks
Checking Generator Speed
Users familiar with Redi-Line operation may detect a change in sound if the
generator is running off-speed. Such an occurrence is generally the result of a bad
or seized bearing and will be accompanied by unusual noise.
Because the rotating components of the Redi-Line generator are totally enclosed, it
is difficult to check speed, although it may be done if a suitable strobe unit is
available. Instead, we suggest you check frequency, which is an indirect, but closely
related, indicator of generator speed. If the frequency is within the proper range, it
can be assumed that the generator is functioning properly.
If the generator is producing an unusual noise, but the frequency is within the proper
range, monitor the unit closely, and check frequency frequently. If the frequency
degrades, return the unit for service.
Checking Voltage or Frequency
Use a true RMS voltmeter to check voltage or frequency. Many voltmeters will not
give accurate readings, and Pacific Scientific recommends using a Fluke Model, 87,
Model 8060, Model 8062, or equivalent.
Connect the voltmeter leads to the power output points on the generator to take a
reading.
Checking Load
Generator load can be checked using a simple 100-watt light bulb in a keyless
fixture mounted on a utility box. Equip the utility box with a short power cord and
plug. Follow good electrical practices when constructing the device.
CAUTION: The REDI-LINE generator produces enough current to injure or kill a
human. Use extreme care when checking the load carrying capabilities of
the generator.
To check load, simply plug the device into the power receptacle in the generator.
The 100-watt light bulb will apply enough load to the unit to function properly.
