Teledyne 4220 installation and operation guide Display Warnings, System Reset

4220 Flow Meter

Section 6 Maintenance and Service

Figure 6-7 Location of the Three Fuses

6.5.3	Display Warnings	The LCD will show various warnings and error messages to warn
		of problems in the program, or difficulties inside the flow meter.
		Some messages request routine maintenance; others point out
		programming errors; still others indicate serious internal diffi-
		culties.
		Following are typical warning messages displayed by the LCD:
		CHECK PRINTER FUSE
		PRINTER JAMMED
		PAPER OUT
6.5.4	System Reset	If the flow meter does not appear to be operating normally, you
		can try to restart the processor by turning the unit off, waiting a
		few minutes, and then turning the unit back on. If that doesn’t
		work, you can reset the software.

CAUTION

This procedure will cause most programmed entries and accu- mulated data stored in the 4220 to be lost, and the flow meter will revert to factory default settings. If this operation is per- formed, it will be necessary for you to reprogram the unit to meet the specifications of your installation. Use Print Program to keep a record of how you programmed the unit.

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