PR Series Balance
EN-31
8. MAINTENANCE
8.1 Calibration
Periodically verify calibration by placing an accurate weight on the balance and viewing the result. If calibration is
required, refer to section 5.2 for instructions.
8.2 Cleaning
WARNING:
Disconnect the balance from the power supply before cleaning.
Make sure that no liquid enters the interior of the balance.
Clean the Balance at regular intervals.
Housing surfaces may be cleaned with a lint-free cloth slightly dampened with water or a
mild cleaning agent.
Glass surfaces may be cleaned with a commercial glass cleaner.
Attention:
Do not use solvents, harsh chemicals, ammonia or abrasive cleaning agents.
8.3 Troubleshooting
TABLE 8-1 TROUBLESHOOTING
Symptom / Display
Possible Cause
Err 8.1
Over init zero range
Err 8.2
Under init zero range
Err 8.3
Over load
Err 8.4
Under load
Err 9.5
Loadcell is not ok
Err 53
EEPROM is not ok
No CAL
Production calibration failure
IDnr.Err
IDNR error
Error
Other error
--NO--
Tare out of range
--NO--
Zero out of range
LoW.rEF
Low reference weight, only in counting mode.
tiMout
Timeout
PUSH.LFt
For PR, need to push LFT button.
8.4 Service Information
If the troubleshooting section does not resolve your problem, contact an Authorized Ohaus Service Agent. Please
visit our website www.ohaus.com to locate the Ohaus office nearest you.
