Tightening Torque Inspection Prior To Operation - Hitachi WH 9DMR Technical Data And Service Manual

(3) The following caution is listed on the Name Plate attached to the Model UC 14YFA or UC 18YG Charger.
<UC 18YG>
For the U.S.A. and Canada
CAUTION
•
Charge HITACHI rechargeable battery types EB 7, EB 9, EB 12, EB 14 and EB 18 series.
Other types of batteries may burst causing personal injury and damage.
•
Charge between 32
•
Indoor use only.
<UC 14YFA>
For the U.S.A. and Canada
CAUTION
•
For safe operation, see Instruction Manual.
•
Charge HITACHI rechargeable batteries Type EB 7, EB 9,
EB 12 and EB 14 series. Other types of batteries may burst
causing personal injury and damage.
•
Charge between 32 and 104
charging of batteries.
•
Indoor use only.
•
Replace defective cord immediately.

8-2. Tightening Torque Inspection Prior to Operation

As described and shown in Para. 6-3-3, the output tightening torque of which the Models WH 9DMR and
WR 9DMR are capable in excess of the rated tightening torque of certain bolts and screws. Accordingly, if the
tightening time is prolonged for such bolts and screws, it could cause damage to their threads or, in the worst
case, cause them to be sheared off. (This phenomenon is common to all existing impact drivers.) Particularly
when tightening M6 (1/4") or smaller screws, tightening time must be kept extremely short: 0.5 seconds or less.
The customer should be advised to carry out several screw tightening operations and adjust the tightening time as
necessary by measuring the tightening torque with an appropriate torque wrench or driver before commencing
continuous operation.
•
For safe operation, see Instruction Manual.
û û
F and 104 F. Rest 15 minutes between the carging of batteries.
•
Replace defective cord immediately.
û
F. Rest 15 minutes between the
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