Barnstead International Thermolyne 859 Series, Service Manual

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66
E
RRORS
Green display (BALANCE)
NOTE: Balance error codes will be displayed in the green balance display. With most error codes below,
power unit down and power back up to see if the error goes away. If it continues try to recalibrate, however, if
the error will not clear, the balance will need to be replaced. See the BALANCE section of this manual. Two
types of balances have been used in the NCAT furnace.
OHAUS Balance
(Most common error codes. See Ohaus manual for the full list of error codes)
Error Code
3.0
4.4
8.0
EEEE
Cause
Calibration Error - Incorrect or no calibra-
tion weight used for calibration.
RS232 buffer is full. There is a bad con-
nection in balance.
Hardware error causing an internal
weight signal which is too low.
Displayed momentarily.
Solution
Recalibrate with correct weights. Make sure all
debris is off the top of the balance and the posts
supporting the aluminum calibration plate are
centered. Only the aluminum calibration plate
should be used during the calibration procedure.
If this error is only displayed when calibrating
the unit, the software is bad and the unit needs
to replaced.
Double check all connections.
Check if the platform or platform support is off.
If not, balance must be serviced.
NCAT is getting power disconnect for a brief
second and resetting itself.
SETRA Balance
(Error codes, unless specifically stated, refer to note at the top of the page.)
Error Code
HHHHH
LLLLLL
NOCAL
Cause
Exceeds maximum specified load (5000
grams).
Load does not meet minimum specified
load requirements.
Unable to do span calibration (load not
within 1% of cal weight, or weight unsta-
ble)
Solution
Reduce load to specified range.
Increase load to specified range. Make sure the
ceramic posts are centered and the plate is on
top of them.
Replace scale.