Easy as Pie

Conducting Vibration Spectrum Surveys is easy

Now I don’t make a lot of pies, but my grandma would say conducting a Vibration Spectrum Survey is just that simple. Let’s see what she means by that.

To get this job started using the Viper II analyzer, it all begins with the power button.

• Yep. Turn that box on and feel the power.
• Now use the arrow keys to select Vibration Spectrum Survey from the main menu and press okay.
• Now select Start Job and press okay.
• If you’ve loaded eSetups from our website, then the Viper II will give you a list of engines to choose from.
• Use the arrow keys to pick the model you’ll be working on and press okay.
• Name that aircraft! The information you enter on this screen will be used to populate the report at the end of the job.
• Now choose the position of the engine you’re balancing on this particular job and fill out the propeller and engine information, as necessary. Skip the propeller section if that doesn’t apply to you.
• Install your vibe sensors (according to the maintenance manual instructions, of course) and connect to Channel A on the Viper II. By the way, you can install up to four sensors to measure vibration at the compressor, turbine and gearbox in a single run.
• Now start your engines!
• For each particular engine model, the eSetup pre-programs the Viper II to offer the conditions you need to acquire data in.
• Select the condition you want to begin with and press okay. The Viper II is now collecting data.
• At this point you can Pause, toggle between the Spectra or overall charts or dump the data and restart the collection.
• When you’ve reached the Power of the Day, press okay, store the data, and move to the next condition to repeat the data collection process.
• Shut the engines down per manual instructions.
• Now select manage jobs and press okay to review data, create a report, delete or export to a USB stick.

Well, I still don’t know whether it’s as easy as pie, but it is definitely easy as… well, I can’t think of anything else, so we’re gonna go with pie.

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