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Section 7
7.7
TROUBLESHOOTING TIPS
The System 1020 has highly reliable circuitry and will provide trouble-free operation within specified
environments. Even a well-crafted precision instrument can fail if exposed to extreme temperature or
vibration conditions during service, storage or transportation. The Diagnostic menu shows how the
system interprets a problem. The test functions and alarm indicators identify "hidden" problems auto-
matically. If a problem seems unsolvable, call our Technical Service Department or your local Siemens
Representative for expert help.
Flow Computer Messages
Certain actions or conditions invoke messages that may appear as a pop-up window, in the right-hand
column of a given menu cell, or the highlighted prompt line at the top of the display screen.
The following is a list of messages that you may encounter along with explanations, and in some
cases, a recommended action.
MESSAGE
Memory Full!
Memory Corrupted!
Chan Not Setup
Clr All Data?
Clr Dynamic Memory?
<EOT>
Empty Pipe -
Press [ENTER]
Fill Pipe -
Press [ENTER]
No Sites
Not Installed
Re-space Index
Invalid Setup
(use Direct Mount)
Response to an attempt to save site data, when data memory is full. Delete an
obsolete site or clear Datalogger memory to make room for the new data.
Memory read error occurred while accessing the active site data.
Response to an attempt to invoke an operation that requires a channel to be
enabled. Enable the channel [Channel Setup
that a channel cannot be enabled until its transducers are operating.
Response to pressing and holding <ENTER> key during power-up. Use this
function to restore operation if a severe event (e.g., a violent power surge)
disrupts system operation.
Response to pressing and holding <ENTER> key during power-up and then
pressing <Right Arrow>.This function eliminates all data stored in RAM. To
invoke in RS-232 serial mode, type @@@ and then press <ENTER>.
Response to a request to output datalogger data to the printer or the Graphics
screen when no datalogger data exists. Set up the Datalogger.
Prompt to empty the pipe during the Actual MTY procedure. After emptying
pipe, press <ENTER>.
Prompt to fill the pipe during the Actual MTY procedure. After filling the pipe,
press [ENTER].
Response while trying to recall/delete a site setup when no Sites are stored.
Response to an attempt to access a menu function that is not included.
Upon measuring the liquid sonic velocity (Vs), the meter recommends respac-
ing the transducers to improve performance.
During the Initial Makeup, the system detects invalid transducer spacing, erro-
neous liquid/pipe parameters, or some other factor that prevents it from com-
pleting the Initial Makeup. This may be due to one of the following:
• An out-of-range data entry.
• An invalid condition; (e.g., overlapping transducers in Reflect Mode).
If selecting Direct Mode does not resolve, review all site setup and transducer
installation choices; particularly data entered for the pipe and liquid.
DESCRIPTION
7-11
1020NFM-1D
Channel Enable
Yes]. Note
(continued)
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