Scheduled Maintenance STwrench User Guide
304 (326) 9836 4134 01 Edition 2.9
It turns red when a shock over the limit occurs.
In this case, even if the STwrench does not seem to have any
major problems, a wrench check must be performed,
including recalibration. The torque transducer and gyroscope
could be damaged even if they continue to work without
evident faults.
After having checked the wrench (and repaired it if
necessary), the shock indicator must be replaced.
20.4 Battery Pack Maintenance
Avoid fully discharging the battery. During normal use, recharge the battery when it is low.
For long term storage (as in the case of spare batteries), cells should be kept within a range of a 30% ±
15% charge. Follow these rules:
• Store the battery in a dry place not exceeding 30° C
• Recharge the battery for one hour every six months
After long-term storage, fully recharge the battery before use.
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