Service Information; Battery Replacement - OHAUS CKW-55 Instruction Manual

EN-46
SYMPTOM
Err 3
Err 7
Err 10
Err 21
LO BAT

4.4 Service Information

If the Troubleshooting section does not resolve or describe your problem, you will need to contact an authorized Ohaus
Service Agent. For Service assistance in the United States, please call Aftermarket, Ohaus Corporation toll-free at (800) 526-0659.
An Ohaus Product Service Specialist will be available to help you.

4.5 Battery Replacement

The Indicator contains a small Lithium battery to maintain a real-time clock and a memory backup system. This battery
should provide many years of maintenance free operation.
The CKW Indicator may also have an optional rechargeable battery system installed, (purchased separately). This option
includes a long life NiMH battery pack and a charging circuit board. This battery system allows operation of the Indicator
without an AC power connection.
In the event that either battery requires replacement, please note the following safety precautions:
CAUTION!
: RISK OF EXPLOSION IF BATTERY IS REPLACED WITH WRONG TYPE OR CONNECTED IMPROPERLY. SEE
SERVICE MANUAL FOR INSTRUCTIONS. DISPOSE OF BATTERY ACCORDING TO LOCAL LAWS AND REGULATIONS.
Attention! : Risque d'explosion si la batterie est remplacée par un type inapproprié ou si elle est incorrectement
branchée. Voir le manuel technique de réparation pour des instructions. Jeter la batterie conformément aux lois et
règlements locaux.
TABLE 4-2. TROUBLESHOOTING (Cont.).
PROBABLE CAUSES(S)
Zero value exceeds
the Zero % setting
EEPROM data incorrect
Library or RTC data
incorrect
Calibration incorrect.
Batteries are weak.
CKW-55 CHECKWEIGHER
REMEDY
Remove excess dead load from platform. Select
a higher Zero Range value, (Non-LFT only.)
Service required.
Replace RTC (Lithium) back-up battery.
Perform the recalibration using correct masses.
Less than 20 minutes of operating time
remaining. Reconnect AC power to charge the
battery. If battery remains weak even after a full
charge cycle, replace the battery pack.