Electronics UBG-16 User Manual

Ultimate Bar Graph Engine Analyzer

(UBG-16)

Operating Instructions

OI 0505991

5/5/99 Rev. B: 3/10/00

You must read this manual before installing or operating the instrument. This manual contains warranty and other information that may affect your decision to install this product and/or the safety of your aircraft.

Electronics International Inc. ®

63296 Powell Butte Hwy • Bend, OR 97701 • [phone] • Buy-EI.com

Important Notice

***** MUST READ *****

If you think it is not important to read this manual, you're wrong! This manual contains important operating information that may affect the safety of you, your aircraft and passengers.

Read the Warranty / Agreement. There is information in the Warranty / Agreement that may alter your decision to install this product. If you do not accept the terms of the Warranty / Agreement, do not install this product. This product may be returned for a refund. Contact Electronics International inc. for details.

The pilot must understand the operation and limitations of this product before flying the aircraft. Do not allow anyone to operate the aircraft that does not know how to properly interpret and operate this product. Keep the Operating Manual in the aircraft at all times. If you do not thoroughly understand the operation of this product, contact a knowledgeable flight instructor for training.

This Instrument only displays the parameters for the function(s) being monitored. The pilot is responsible for interpreting the data and determining if an engine or aircraft system anomaly exits. When using this instrument the pilot’s diagnostic ability is limited to his/her interpretation of the displayed data and the there observation skills.

If after reading this manual you do not have the knowledge to interpret the displayed data to operate the aircraftsafelyortodetectengineand/oraircraftsystemproblems,contactaknowledgeableinstructorfor training.

The ability for this product to respond to an engine or aircraft system anomaly is directly related to how that anomaly affects the reading of the function(s) being monitored (i.e.: if an engine fire does not affect the engine RPM, the RPM reading will not change).

If you detect a problem using this instrument, it is your responsibility to take appropriate action to insure the safety of the flight. Practice simulating problems to build your skills and to understand the relationships between problems and their affects on the displayed data. To insure you are taking appropriate action contact a knowledgeable flight instructor for training.

This manual does not make any recommendations as to specific exhaust gas temperature(s) at which to lean your engine. Check the airframe and/or engine manufacturer’s recommendations to properly lean your engine. It is the pilot’s responsibility to lean the engine properly.

It is possible for any instrument to fail thereby displaying inaccurate high, low or jumpy readings. Therefore, you must be able to recognize an instrument failure and you must be proficient in operating your aircraft safely in spite of an instrument failure. If you do not have this knowledge, contact the FAA or a knowledgeable flight instructor for training prior to flying the aircraft with this instrument.

Rev. C 9/24/97

	Contents
Warranty ---------------------------------------------------------------------------------------------------		2
Introduction -----------------------------------------------------------------------------------------------		3
Mode Selector Switch -----------------------------------------------------------------------------------		3
Normal Operating Mode -------------------------------------------------------------------------------		3
Step Switch ------------------------------------------------------------------------------------------------		4
1.	Displaying the EGTs and CHT’s: ---------------------------------------------------------------	4
2.	Displaying a Temperature on the 7th Column of Bars: ---------------------------------------	4
3.	Displaying Other Temperatures and/or Functions Digitally: ---------------------------------	5
4.	Displaying the Shock Cooling Rate: ------------------------------------------------------------	5
5.	Displaying the Peak EGT and Cylinder: -------------------------------------------------------	5
6. Displaying the EGT Difference: ----------------------------------------------------------------		6
Scanning Through the Channels Automatically ---------------------------------------------------		6
Normalized Operating Mode --------------------------------------------------------------------------		6
Lean Operating Mode ----------------------------------------------------------------------------------		7
1.	False Peaks: ---------------------------------------------------------------------------------------	8
2.	Leaning on the Rich Side of Peak: --------------------------------------------------------------	8
3.	Alternate Method for Leaning on the Rich Side of Peak: ------------------------------------	9
4.	Leaning on the Lean Side of Peak: -------------------------------------------------------------	9
5. Method for Checking the Mixture Setting when Operating on the Lean Side of Peak: ---		9
Alarms	------------------------------------------------------------------------------------------------------	10
1.	High and Low Alarm Annunciators: ------------------------------------------------------------	10
2.	EGT Differential Alarm Annunciator: ----------------------------------------------------------	10
3.	Shock Cooling Alarm Annunciator: -------------------------------------------------------------	10
4.	Finding the Channel on which a Programmed Limit has been Violated: --------------------	10
5.	Canceling all Active Alarms for 10 Minutes: --------------------------------------------------	11
6.	Activating all Canceled Alarms: ----------------------------------------------------------------	11
Programming the 34 Limits ----------------------------------------------------------------------------		11
Programming the High and Low EGT and CHT Limits -----------------------------------------		11
1.	Selecting the High EGT Limits: -----------------------------------------------------------------	11
2.	Selecting the Low EGT Limits: ------------------------------------------------------------------	12
3.	Selecting the High CHT Limits: -----------------------------------------------------------------	12
4.	Selecting the Low CHT Limits: -----------------------------------------------------------------	12

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Contents Continued:
Programming the Range of the EGT Columns of Bars ------------------------------------------		14
1.	Selecting the Upper EGT Bar Trip Point: ------------------------------------------------------	14
2.	Selecting the Lower EGT Bar Trip Point: ------------------------------------------------------	14
Programming the High and Low Limits and Range of the 7th Column of Bars ------------		15
Programming the High and Low Limits for Other Temperatures or Functions ------------		16
Programming the Shock Cooling Limit and Cylinder --------------------------------------------		18
Programming the EGT Differential Limit -----------------------------------------------------------		18
Power-up Programming ---------------------------------------------------------------------------------		19
1.	Enter the Power-up Programming Mode: -----------------------------------------------------	20
2.	Configuring EGT and CHT Channels: ---------------------------------------------------------	20
3.	Configuring the 7th Column of Bars: -----------------------------------------------------------	20
4.	Configuring the Remaining Left and Right Channels: ----------------------------------------	21
5.	Exiting the Programming Mode: ----------------------------------------------------------------	21
Operating the UBG in Your Aircraft ------------------------------------------------------------------		21
1.	Taxi: ------------------------------------------------------------------------------------------------	21
2.	Run Up: --------------------------------------------------------------------------------------------	21
3.	Takeoff: --------------------------------------------------------------------------------------------	22
4.	Climb: ----------------------------------------------------------------------------------------------	22
5.	Cruise: ----------------------------------------------------------------------------------------------	22
6.	Descent: --------------------------------------------------------------------------------------------	23
Work Sheet for Setting Limits -------------------------------------------------------------------------		24
"UBG-16" Configuration Form ------------------------------------------------------------------------		25
Fuel/Air Profile -------------------------------------------------------------------------------------------		26
Specifications and Operating Features --------------------------------------------------------------		28

Page 2 of 2

Warranty / Agreement

Electronics International Inc. warrants this instrument and system components to be free from defects in materials and workmanship for a period of one year from the user invoice date. Electronics International Inc. will repair or replace any item under the terms of this Warranty provided the item is returned to the factory prepaid.

1. This Warranty/Agreement shall not apply to any product that has been repaired or altered by any person other than Electronics International Inc., or that has been subjected to misuse, accident, incorrect wiring, negligence, improper or unprofessional assembly or improper installation by any person. This warranty does not cover any reimbursement for any person’s time for installation, removal, assembly or repair. Electronics International retains the right to determine the reason or cause for warranty repair.

2.This Warranty/Agreement does not extend to any machine, vehicle, boat, aircraft or any other device to which the Electronics International Inc. product may be connected, attached, interconnected or used in conjunction with in any way.

3.The obligation assumed by Electronics International Inc. under this warranty is limited to repair, replacement or refund of the product, at the sole discretion of Electronics International Inc.

4.Electronics International Inc. is not liable for expenses incurred by the customer or installer due to factory updates, modifications, improvements, upgrades, changes, or any other alterations to the product that may affect the form, fit, function or operation of the product.

5.Personal injury or property damage do to misinterpretation or lack of understanding of this product is solely the pilots responsibility. The pilot must understand all aspects of the operation of this product before flying the aircraft. If he/she does not, they agree to seek training from a knowledgeable instructor. Do not allow anyone to operate the aircraft that does not know the operation of this product. Keep the Operating Instructions in the aircraft at all times.

6.Electronics International Inc. is not responsible for shipping charges or damages incurred under this Warranty.

7.No representative is authorized to assume any other liability for Electronics International Inc. in connection with the sale of Electronics International Inc. products.

8. You must read the entire installation and operating instructions. If you do not agree to and accept the terms of this warranty/agreement and the responsibilities set forth in these manuals, DO NOT install this product. Contact E.I. for a refund.

This Warranty is made only to the original user. THIS WARRANTY IS IN LIEU OF ALL OTHER

WARRANTIES OR OBLIGATIONS: EXPRESS OR IMPLIED. MANUFACTURER EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. PURCHASER AGREES THAT IN NO EVENT SHALL MANUFACTURER BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS OR LOSS OF USE OR OTHER ECONOMIC LOSS. EXCEPT AS EXPRESSLY PROVIDED HEREIN, MANUFACTURER DISCLAIMS ALL OTHER LIABILITY TO PURCHASER OR ANY OTHER PERSON IN CONNECTION WITH THE USE OR PERFORMANCE OF MANUFACTURER’S PRODUCTS, INCLUDING SPECIFICALLY LIABILITY IN TORT.

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Introduction

Congratulations on purchasing the Ultimate Bar Graph Engine Analyzer (UBG), one of the most sophisticated diagnostic tools available in general aviation. You can learn the basic operation of the UBG in the first few minutes of hands-on operation. Although the UBG is simple to operate, its capabilities are numerous.

The UBG is shipped from the factory with all of the programmed limits turned off. This allows you to learn the basic operation of the UBG without having to deal with alarms or programming limits. As you become comfortable operating the UBG, you can start using more of its features.

Mode Selector Switch:

Each time the Mode Switch is pressed to the right, the UBG will advance to the next operating mode. There are three modes of operation: Normal, Normalized and Lean. The top of the display will indicate in which mode the UBG is operating. In the Normal Mode (figure 1), there is no indication at the top of the display. In the Normalized Mode (figure 2), the word “NORMALIZED” appears at the top of the display, and in the Lean Mode (figure 3) the word “LEAN” appears.

Also, when switching between the three operating modes, “NORMAL”, NORMALZD” or “LEAN” appears in the digital display when entering a mode, for as long as the Mode Switch is held to the right. This allows you to see what mode the UBG is entering even if the top of the display is not visible.

The left position of the Mode Selector Switch is used for programming, which will be covered later in this manual.

Figure 1

Figure 2

Figure 3

Mode Switch

Normal Operating Mode:

In the Normal Operating Mode, the EGTs are indicated by the height of the lit bars in each of the columns. The CHTs are indicated by the height of the blanked bars in each of the columns. A CHT of 300’F will cause the second bar from the bottom to blank. The scaling of the blanked CHT bars is 33’F per bar.

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The Bar Graph Display allows visual comparison of EGTs and CHTs at a glance. It also allows you to see where the EGTs and CHTs are operating in their normal operating range (i.e., high EGTs will be displayed with many bars lit in a column and low EGTs will be displayed with few bars lit in a column).

The scaling and range of the EGT columns of bars may be customized to accommodate any engine or pilot’s preference (see the “Programming the Range of the EGT Columns of Bars” section of this manual).

Step Switch:

When operating in the Normal or Normalized Operating Mode, each time the Step Switch is pushed to the right the UBG will advance the digital display to show the next temperature or function. Each time the Step Switch is pushed to the left the digital display will show the previous temperature or function.

Each time the Step Switch is pushed to the right, the UBG indicates the following temperatures or functions in the digital display:

1. Displaying the EGTs and CHTs:

The EGTs and CHTs will be indicated in the digital display, beginning with cylinder #1. The left side of the digital display will indicate exhaust gas temperatures and the right side of the digital display will indicate cylinder head temperatures. The lit box around a specific cylinder number (located at the top of the columns) coincides with which cylinder is being digitally displayed. Each time the Step Switch

is pushed to the right the next cylinder will be displayed.

Step Switch

2. Displaying a Temperature on the 7th Column of Bars:

If installed in a 4 or 6-cylinder engine, after the last EGT channel has been displayed on the UBG, push the Step Switch once to the right to digitally display the temperature on the 7th column of bars (if the 7th column is activated). The 7th column of bars may be used to display

EGT and CHT (on a 7-cylinder engine), or TIT or Oil Temperature (on a 4 or 6-cylinder engine), or it may be turned OFF. Installation and programming of the UBG will determine what, if any, function will be displayed on column 7.

The scaling and range of the 7th column of bars may be customized (independent of the EGT columns) to accommodate any engine or pilot’s preference (see “Programming the Range of the 7th Column of Bars”).

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3. Displaying Other Temperatures and/or Functions Digitally:

There are a total of 16 input channels on the UBG. The columns of bars can display EGT, CHT, TIT or Oil. Other functions will be indicated only in the digital display. While viewing the digital readout for the last column of bars, push the Step Switch to the right to display the next temperature or function connected to the UBG’s input channels.

Note: While viewing OAT, the digital display may be toggled between degrees F and degrees C by pushing the Mode Switch to the left.

4. Displaying the Shock Cooling Rate:

While the last monitored temperature or function is being displayed, push the step switch once to the right to see the Shock Cooling Rate in the digital display. This is the rate (in degrees F per minute) at which the indicated cylinder head temperature is cooling. Normally, cooling will occur only during descent. The Cylinder Number inside the lit box at the top of the columns is the programmed shock cooling cylinder being displayed.

Note: An aircraft engine can not be shock cooled when cylinder head temperatures are below 300'F. For this reason, the UBG-16 will display "-00" when the CHT drops below 300'F.

A Shock Cooling Limit and the cylinder to be monitored for shock cooling are programmable (see “Programming the Shock Cooling Limit and Cylinder”).

5. Displaying the Peak EGT and Cylinder:

While the Shock Cooling Rate is being displayed, push the Step Switch once to the right to display the Peak EGT achieved during the last leaning session. The cylinder

number inside the lit box at the top of the columns is the cylinder

which first reached peak EGT. If you have not leaned the aircraft during this flight, the Peak EGT from the last time you leaned your engine will be retrieved from long-term memory and will be

displayed.

Note: When viewing Peak EGT, the display may be toggled between Profile and Peak EGT by pushing the Mode Switch to the left. While showing Profile, each cylinder’s fuel/air mixture distribution is displayed in the Bar Graph Display. This is an advanced feature of the UBG and is described in detail at the back of this manual.

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6. Displaying the EGT Difference:

While the Peak EGT is being displayed, push the Step Switch once to the right to display the difference between the hottest and coldest EGT. A programmable limit may be set to alert you when the EGT Differential Limit is exceeded (see “Programming the EGT Differential Limit”).

Scanning Through the Channels Automatically:

When operating in the Normal or Normalized Operating Mode, by pushing and holding the step switch to the right until the word “SCAN” appears in the digital display, you may set the UBG to automatically scan the digital display through the various temperatures and/or functions being monitored. The length of time a temperature or function will be displayed is programmable. To cancel the Scan operation, push the step switch to the right or left, or push the Mode Switch to the right.

If a limit is violated while operating in the Scan Mode, the scan will stop and the UBG will display the channel with the violation.

When operating in the Scan Mode only, the Scan Rate may be programmed by performing the following steps:

1. Push and hold the Mode Switch to the left until the word “PROGRAM” appears in the digital display. When the Mode Switch is released, the word “SCAN R. X” will appear in the digital display. The number blinking (X) in the right portion of the digital display is the Scan Rate in seconds.

2. Push the Step Switch right or left to increase or decrease the Scan Rate.

3. To exit this programming mode, push and hold the Mode Switch to the left until the word “END” appears in the digital display.

Normalized Operating Mode:

The purpose of the Normalized Operating Mode is to be able to compare current engine operation to prior engine operation.

Once the height of the EGT columns has been normalized (brought to the same level), any abnormal change in the engine’s EGTs will show up as an abnormally high or low column of bars. In this way you can see temperature trends over weeks, months or years. The Bar Graph Display provides a graph of long-term trend, allowing you to spot problems easily.

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It is recommended that the EGT columns be normalized while operating your aircraft in normal cruise flight, with the engine leaned. When operating in the Normalized Mode only, the EGT bars may be normalized on the UBG display by performing the following steps:

1.Push and hold the Mode Switch to the left until “PROGRAM” appears in the digital display. Release the Mode Switch and the digital display will show “Normalize N”.

2.Push the Step Switch right or left to change the “N” to a “Y” ("NO" to a "YES").

3.To exit this programming mode, push and hold the Mode Switch to the left until the word “END” appears in the digital display.

Note: The TIT column of bars will not be affected by normalizing the EGT columns.

Normalizing brings the EGT columns to the same height and stores the data in memory. Once the EGTs are normalized, each time you operate your aircraft in normal cruise flight with your engine leaned, you may put the UBG into its Normalized Operating Mode and look for abnormally high or low columns of bars. Many problems occur slowly over time. The UBG’s Normalized Operating Mode helps you spot these problems as they occur.

Lean Operating Mode:

This manual does not make any recommendations as to specific exhaust gas temperature(s) at which to lean your engine. Check the airframe and/or engine manufacturer’s recommendations to properly lean your engine. It is the pilot’s responsibility to lean the engine properly.

We recommend leaning your engine in cruise. A rich running engine wastes fuel and tends to run rough. Good leaning techniques result in cleaner combustion chambers with fewer lead salt deposits on the pistons and exhaust valves. Also, proper leaning means less spark plug fouling, longer life for the plugs, reduced maintenance costs and a considerable fuel savings. Furthermore, proper leaning at cruise during cool or cold weather aids in raising engine and oil temperatures to desirable minimums in order to evaporate the water and acids out of the oil. Water and acids attack the insides of an engine, causing rust and corrosion.

When you enter the Lean Operating Mode of the UBG, the right portion of the digital display will show the current EGT for the cylinder which peaked first the last time you leaned your engine. The word “LEAN” will be displayed in the left portion of the digital display. The UBG will not activate the Lean Operating Mode until the hottest EGT has raised 10’F.

Most engines will exhibit a 200 to 350’F rise in EGTs before a cylinder reaches peak. Start the leaning process by rough leaning your engine near peak EGT (pull the mixture back to a predetermined setting or use a fuel flow instrument). Experience should be your guide. Do not lean past peak EGT during rough leaning.

Note: It is not recommended to lean an engine for peak EGT above 75% power setting.

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