35
anti-impurity fi lter
16.1.5) Clean coolant fi lter
The coolant circuit of the drilling machine is provided
with an anti-impurity fi lter; should an evident de-
crease of the fl ow of the lubrocoolant occur, it could
be necessary to clean the fi lter in the following way:
Using a 14 mm key, unscrew the coupling (02).
Extract the fi lter and clean it carefully.
Reassemble the filter into the coupling (02) as
shown in the fi gure.
Reposition and fully tighten the coupling (02).
02
16.2) SPECIAL MAINTENANCE OF THE DRILL
Special maintenance operations require the intervention of qualifi ed personnel only, please contact
Cembre
(Ref. to §
17
)
APPENDIX “A”
F
actors which infl uence the number of holes that can be made according to the cutting tool
used.
– Hardness of the material to be drilled.
– Thickness to be drilled.
– Stability of the drill clamp and correct assembly of the cutter/bit.
– Suitable lubrocooling
(lubrication/cooling) to keep the temperature of the cutter low so as not to compromise
the
effi
ciency of the cutting edges, whilst at the same time facilitating the removal of the swarf.
–
The contact time of the cutting edge with the material and the force exerted on it;
bear in mind that drilling
the hole in the shortest time may mean excessive pressure has been applied to the cutter thus reducing its ef-
fi ciency. The "drilling assistance" function allows the operator to work in a manner which optimises force and
time thereby maximising cutter effi
ciency.
Observe these basic rules:
1) Commence drilling by exerting light pressure on the advancing lever, progressively increasing and then relaxing
it only when the cutter is in the exit phase.
2) Avoid pressure jolts and only advance according to the drilling diameter to avoid scratching the material or
damaging the cutting edges of the cutter/bit.
3) Remember that a cutter with effi
cient cutting edges requires a pressure lower than that applied to one with
which a number of holes have already been made.
4) When holes are made close to raised lettering on the rails, the initial pressure must be extremely light until the
markings disappear, otherwise the cutter may be damaged.
In the case of a breakdown contact our Area Agent who will advise you on the problem and give you the necessary
instructions on how to dispatch the machine to our nearest service Centre; if possible, attach a copy of the Test Cer-
tifi cate supplied by
Cembre
together with the machine or fi ll in and attach the form available in the “ASSISTANCE”
section of the
Cembre
website.
17. RETURN TO
Cembre
FOR OVERHAUL
Summary of Contents for LD-16B
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