Master-force 241-0424, Руководство оператора

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13
WARNING!
Only use sockets de-
signed for impact wrenches. Sockets
not designed for impact wrenches
could break and result in user injury.
Inspect sockets prior to use to ensure
that they have no cracks or other vis-
ible damage.
INSTALLING BITS (Fig.6)
1. Lock the trigger switch by placing
the direction-of-rotation selector
in the OFF (center) position.
2. Choosing a suitable hex adaptor (depends on the bit to be used), Pull the
guide sleeve of the hex adaptor forward, press the hex adaptor onto the
output drive.
3. Install the bit into the hex adaptor.
TIGHTENING AND LOOSENING BOLTS
A hex socket matching the bolt or nut must first be selected. Then mount
the socket on the output drive, and grip the nut to be tightened with the hex
socket. Holding the wrench in line with the bolt, press the trigger switch to
impact the nut for several seconds.
If the nut is only loosely fitted to the bolt, the bolt may turn with nut, therefore
mistaking proper tightening. In this case, stop impact on the nut and hold the
bolt head with a wrench before restarting impact, or manually tighten the
bolt and nut to prevent them slipping.
TIGHTENING AND LOOSENING SCREWS
Install the bit that matches the screw, line up the bit in the grooves of the
head of the screw, then tighten it. Push the impact wrench just enough to
keep the bit fitting the head of the screw.
Caution! Keep the impact wrench lined up straight with the screw, otherwise
the head of the screw will be damaged.
TIGHTENING TORQUE
The tightening torque depends on the duration of the impacting/tightening
action. The greatest tightening torque is achieved after approx.3-5 seconds
impacting /tightening action.
The torque build-up depends on the following factors:

Hardness of the bolts/nuts.

Type of washer (disk washer, spring washer, seal).

Hardness of the material to be joined.

Lubricating effect at the surface of the junction.
For example:
1. Hard cases: Joining metal to metal with a disk washer. The maximum
torque is reached after a relative short impacting/tightening action.
Fig. 6