Fein MSf 679 b Operating Instructions

To be handed to the workshop
Operating instructions
for the Angle Grinder type MSf 679 b
1. Technical Data
Type of current : "' (AC single phase)
Fuses for 220 V: 10 A slow or 15 A fast or automatic fuse 10 A type G.
'
Speed Input Output
Net Weight
Type
R.P.M . Watts Watts
I
lbs kg
MSf 679b 5100 2000 1400 16 7,2
I
2. Construction
The angle grinder MSf 679 b is an electric tool of Class II
according to VDE regulations 0740. The protective insulation ·is
additional to the normal insulation and protects the operator
against electric accidents caused by defective normal insulation.
The protective insulation is attained by the motor housing
made of polyamide- shockproof and resistant to leakage currents -
a nd by insulating the armature against the pinion. The machine
is supplied with a two-core cable w ithout earth wire and must
not be earthed. The dustproof switch is mounted in the handle.
The angle grinder is equipped with a protective motor switch.
When overloaded, it disconnects the motor.
When the protective motor switch is released, it can again be
connected after 20 or 30 seconds.
Switch must be in the "Off" position, before connecting again
the protective motor switch.
The machine is teste d with the prescribed test v oltage of 4000 V.
It is radio suppressed according to radio interfer ence VDE 0875.
The bevel gear have helical teeth. Gears are lapped fo r accurate
meshing; both p arts to be supplied as pairs only. Gears and
bearings are protected against dust
~nd
loss of grease.
- The slots for the cooling air of the motor are located in the
gear head. They allow an additional cooling of the gear head.
BE 443/e
GW 5. 73. P.rinted in Germany
max.
Thread
Grinding wheel
peripheral
speed
of
I
max. dia
I
max . width
I
bore
type
in.
I
mm in.
I
mm in.
i
ft/s
I
m/s
spindle
mm
flexib le
grinding 11
13j,6
300
.,32
4
7
Ia
22.2 262 80 M 14
wheel
To p revent the overbridging of the insulation n o additional
markfng plates and signs must be riveted or screwed on the
housing. W e recommend the u se of transfers only.
3. Connection and operation
Main voltage must correspond to the operating voltage marked
on the rating plate. The tool can be plugge d into plain or safety
sockets. Switch must be in the "Off" position w hen connecting.
The grinders must not be used w ithout w h eel guards.
Do not exceed the dimensions · of grinding wheels stipulated.
For cutting off, use cutting wheels together with the prescribed
flanges and, in addition to this, our wheel guard with adjustable
support for cutting off stone.
4. Maintenance and lubrication.
The angle grinder requires adequate maintenance. Before star-
ting any maintenance work pull plug from socket.
After 3-4 weeks the m achin e, in particular carbon holde rs and
insulate d parts , should be cleaned of carbon dust and dirt. This
is done by m eans of a brush or compressed air.
Worn carbon brushes automatically switch off the machine
utter reaching their minimum length. After checking the carbon
brushes make sure to refit them in their original position and