Napa Carlyle TW38TD1 Instruction Manual page 7

MAINTANENCE
1. The internal mechanism of the torque wrench has been
calibrated and lubricated before final assembly. DO
NOT attempt to open the wrench's internal mechanism
for any reason. Doing so will void the warranty.
2. Do not submerge the torque wrench in water or any
other liquids.
3. When not in use always store the torque wrench in its
protective case. Be sure before storage that you have
reset the torque setting back to zero.
4. Re-calibration is necessary to maintain accuracy once
a year or every 5000 cycles. Using a torque wrench
that is not regularly calibrated may cause damage to
the tool and personal property.
TW38TD1, TW12TD2, TW12TD1 7 Rev. 02/27/15