Chapter 3. Diagnostics; Introduction; Displaying Diagnostic Parameters - GE DigitalFlo XGM868i Service Manual

Chapter 3. Diagnostics

3.1 Introduction

This chapter explains how to troubleshoot the Model XGM868i if problems arise with the electronics enclosure, the
flowcell, or the transducers. Indications of a possible problem include:
•
display of an error message on the LCD display screen
•
erratic flow readings
•
readings of doubtful accuracy (i.e., readings that are not consistent with readings from another flow measuring
device connected to the same process).
If any of the above conditions occurs, proceed with the instructions presented in this chapter.

3.2 Displaying Diagnostic Parameters

The Model XGM868i has built-in Diagnostic Parameters to aid in the troubleshooting of flowcell, transducer and/or
electrical problems. To access these parameters, use the Keypad Program. Then, complete the following instructions to
display the desired diagnostic parameter:
Note: To perform this function with PanaView software see Appendix C, Programming with PanaView in the
Programming Manual, and/or the PanaView User's Manual.
1. Press [Escape], [Enter], [Escape].
2. In the Keypad Program window, scroll to PROG and press [Enter].
3. In the PROG menu, scroll to GLOBL and press [Enter].
4. Scroll to I/O and press [Enter].
5. Scroll to LCD and press [Enter].
6. The window now asks for the # of LCD Parameters. Scroll to the desired number (from OFF through 1-4 and KEY)
and press [Enter].
The OFF setting switches the measurement display off, while the KEY setting enables users to change the measurement
display via the arrow keys, without accessing the Keypad Program. If you select KEY:
•
To view a parameter other than the one currently displayed, press the [] or [] keys to scroll through the various
parameters.
•
To scroll through the channel options on a two-channel XGM868i, press the [] or [] keys until you have
reached the desired option.
DigitalFlow™ XGM868i Service Manual
Chapter 3. Diagnostics
17