Fein ASb 636 Operating Instructions

ASb 636
To be handed to the workshop!
Operating instructions
for the double insulated and radio suppressed
Impact Wrench type ASb 636 (single phase A.C.)
and ASb 736 (42 Volts)
1.
Technical data
Current: "' (single phase AC)
For screws
Speed R.P.M.
Taps Input Output Max. tightening Net weight
Type
standard
I
high tensile
full load per min.
Watts Watts torque
up to up to
ASb 636
M 16 (
5
/s") M 12 (
1 /2")
850 1700
ASb 736
(42V)
2. Construction
This impact wrench is an electric tool of class II with protective
insulation without earth wire and is in accordance w ith the
VDE regulations 0740. The protective insulation is attained by
the shockproof motor h ousing made of Polyamide and by
insulating the armature against the pinion. The protective insu-
lation is tested with the prescribed test voltage of 4000 V (1500 V
for class
1).
The machine is radio suppressed in accordance with
radio interference degree N . It is supplied with a two-core cable
without earth wire and must not be earthed.
Gearing and percussion mechanism are totally enclosed in the
tool-head casing; their construction is well-planned and clear.
The tool holder complies with international standards and has
a 1 /2" square drive.
The machine is provided with a reversing switch for clockwise
and anticlockwise rotation. It must not be operated when the
machine is running.
To prevent the overbridging of the insulation no additional
marking plates and signs must be riveted or screwed on the
housing. We recommend the use of transfers only.
Type ASb 736 for low tension (42 Volts) is of the same design,
but not radio suppressed.
3. Connection
Main voltage must correspond to the operating voltage marked
on the rating plate. The tool can be plugged into plain or safety
sockets.
BE 189/e
X
6. 66
Printed in Germany
ft. lbs
I
kpm lbs
I
kg
I
. . .
1 ~0
73 10 5.1 2.3
230
4. Mode of Operation
The motor drives the tool holder with tool attached via gearing
and percussion mechanism. The direct drive is cut out as soon
as the screw or nut has been roughly run down. Once the motor
reaches its rated load, the percussion mechanism comes into
operation and converts the drive force of the motor - which
continues to run at uniform speed - into a n intermittent torque
with two strokes for each revolution of the drive assembly.
Screws and nuts are slackened in reverse order: first percussion
strokes, followed by direct drive. The tool is easy to handle, as
the operator needs not exert any restraining torque. As the
clutch will always disengage as soon as the rated load is
attained, the motor cannot be overloaded.
5. Application
The full tightening or slackening action provided depends on the
time during which the percussion mechanism is allowed to run.
Max. tightening torque is the sum of the torque applied by each
stroke. According to the type of screwed connection the max.
torque w ill generally represent approx. 120 single torque
strokes, which are applied in 3 to 5 seconds. Available max.
torque in normal service is 73lbs.ft (10 mkg) (see diagramm p.3).
There is no point in applying the tool for longer than 5 seconds
since the torque will not increase any fu rther, w hile the tool
head w ill appreciably heat. Overheating will lead to increased
wear of all percussion components and excessive lubricant
consumption.