Ohaus DEFENDER 7000 BENCH SCALES Manual en - Manual (Page 69)

7000 Series Indicators EN-67
7. MAINTENANCE
7.1 Cleaning
CAUTION: DISCONNECT THE EQUIPMENT FROM AC MAINS POWER BEFORE CLEANING.
T71P
The housing may be cleaned with a cloth dampened with water and a mild detergent.
Do not use solvents, chemicals, alcohol, ammonia or abrasives to clean the housing or control panel.
T71XW
The housing may be cleaned with a cleaning solution suitable for use on stainless steel. Rinse the housing with water and dry it
thoroughly. Do not use solvents, chemicals, alcohol, ammonia or abrasives to clean the control panel.
7.2 Troubleshooting
TABLE 7-1. TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY
Will not turn on. Power cord not plugged in or properly
connected.
Power outlet not supplying electricity.
Battery discharged (T71P).
Other failure.
Check power cord connections. Make sure power
cord is plugged into the power outlet.
Check power source.
Replace batteries (T71P).
Service required.
Cannot zero the display or
will not zero when turned
on. Load on scale exceeds allowable limits.
Load on scale is not stable.
Load cell damage.
Remove load on scale.
Wait for load to become stable.
Service required.
Unable to calibrate. Lock Calibration Menu set to ON.
LFT Menu set to ON.
Incorrect value for calibration mass.
Set Lock Calibration Menu to OFF.
(See Section 3.12)
Set LFT Menu to OFF.
Use correct calibration mass.
Cannot display weight in
desired weighing unit. Unit not set to ON in Unit Menu. Enable unit in the Units Menu. (See Section 3.7.)
Cannot change menu
settings. Menu has been locked. Set selected menu to OFF in the Lock Menu. Lockout
Switch on the circuit board may need to be set to the
off position.
ERROR 8.1 displayed. Weight reading exceeds Power On Zero
limit. Make sure scale platform is empty.
Perform zero calibration.
ERROR 8.2 displayed. Weight reading below Power On Zero limit. Install platform on scale.
Perform zero calibration.
ERROR 8.3 displayed. Weight reading exceeds Overload limit. Reduce load on scale.
ERROR 8.4 displayed. Weight reading below Underload limit. Install platform on scale.
Perform zero calibration.
ERROR 8.5 displayed. Tare out of range Adjust tare value to be within range