Work Instructions; Maintenance - Narex EFH 36-E9 Original Operating Manual

Use of stepped backstop
a) Division in several steps
For deeper milling depths more draughts and less withdrawal of chips
is recommended. Using the stepped backstop (14) the cut depth can be
divided in multiple levels.
Using the lowest level of stepped backstop set the required milling
depth. After that, higher backstop levels will be selected for the first
working reductions.
b) Presetting of various milling depths
If different milling depths are needed in machining one workpiece,
these can be adjusted using the stepped backstop (14).
Adjustment of up to three machining depths follows the previously
described procedure with the following difference: by turning the
screws (12) the vertical interval of backstops can be changed addition-
ally.
To rearrange the bolts (12), the lock nuts must be released (13 - opening
of wrench SW 8).

Work instructions

Milling direction
Milling must proceed against
the direction of the router rota-
tion (upfeed run).
If milling proceeds in the di-
rection of the router rotation
(climb technique), the machine
might be ripped out of the
operator´s hands.
Milling procedure
Adjust the milling depth as described above.
Seat the machine on machined materials and turn it on.
Press the clamping lever (8) and push the machine slowly down until
the depth backstop seats (4). Lock the machine by releasing the clamp-
ing lever (8). Carry out the milling process with equal shift.
Once the milling operation is finished, put the machine in the upper
posiion and turn it off.
Milling with stop bar
Fasten a suitable stop bar onto the workpiece using a suitable clamping
preparation (clamp).
Lead the rear straight flat side of the skide (15) alongside the skid plate.
Mind the direction of feed: To prevent "running" the machine away
from the stop bar, the machine must be controlled as shown.
Milling with copying ring
Using the copying ring (30), contours from patterns or templates can be
transferred to workpieces.
Fitting the copying ring adaptor (e)
By releasing of both screws (29) release and remove the plastic cap
ring (28).
Fit the copying case (30) on as depicted and fasten using both
screws (29).
Milling procedure
Select the diameter of router less than the inner diameter of the
copying case. Attach the machine with the copying ring (30) to the
matrix.
Press the clamping lever (8) and push the machine slowly down to the
workpiece, until the adjusted milling depth is achieved.
Applying slight side pressure alongside the matrix, guide the machine
with the overlapping copying case.
Milling with the help of longitudinal guide (d)
Wing screws (23).
Hang up the fine adjustment case (27) into the right channel in the
baseplate.
Push the guide gib (24) with interposer bars (25) into the case (27) and
baseplate (17).
Adjust the gib to the required dimension. Tighten the wing screws (23)
and grooved screw (26).
The parallel stop can be finely adjusted by turning the fine adjust-
ment (27) (1 segment = 0.1 mm / 1 revolution = 1.0 mm).
Milling of edges or shapes
For marginal or shape milling without the guide gib, the milling tool
must be provided with a guide pin or ball bearing.
Guide the machine towards the machined material from the side and
mill it in, until the guide pin or ball bearing of the milling tool attaches
to the machined edge of the worked material. Guide the machine with
both hands alongside the machined material edge, whilst following the
right angle of apposition. Excessive pressure might damage the edge of
the machined material.

Maintenance

 For correct and safe work keep the machine, milling tool and work-
place clean.
 The cable can only be replaced in an authorised electric workshop
which holds a relevant licence to perform these types of activities.
 The vent holes of the engine cover must not get plugged.

Clean the guideway of posts occasionally and then lubricate.
After about 200 hours of operation the following works need to be
done:

Check the length of the brushes. Brushes shorter than 5 mm must
be replaced with new ones.
 Exchange of the lubricating grease in the gearbox and bearings.
To maintain the protection class, the machine has to be checked in
terms of safety, and therefore these works have to be carried out in
a specialized electrotechnical workshop which is authorized for this
type of works.
English
1