Enerpac NC Serie Manual De Instrucciones página 2

WARNING: Improper positioning of the nut
cutter on the nut may cause damage to the
cutting blade. Make sure it is well positioned.
See illustration 2 and 3.
CAUTION: The cutting blade must not cut
a hardened washer or spring washer. See
illustration 2.
WARNING: To prevent personal injury do not
place fingers in the cutting area.
5.5 Hold nut cutter in position, operate pump until
cutting blade cuts through the nut. Avoid damage to
the bolt thread by stopping the pump as soon as the
nut is split. Stop pump by opening the release valve to
retract the cutting blade. Lift the nut cutter off the nut.
5.6 If you can not remove the nut after one cut, repositi-
on the nut cutter to the side opposite (180°) the split.
RECOMMENDATION: When cutting stainless
steel or hardened steel nuts apply a suitable
cutting fluid. The cutting fluid will help reduce
cutter blade wear and breakage.
5.7 When ready with the job, replace the dustcaps to all
couplers.
6.0 MAINTENANCE
Before disassembling nut cutters:
WARNING: Nut cutter is spring loaded. To
avoid personal injury be careful when disas-
sembling. Do not remove the spring.
Hydraulic
maintenance. Disassemble the product, clean
and lubricate all parts prior to assembling.
ENERPAC offers ready-to-use spare parts kits
for repairs and replacements. Repair Parts
Sheet is available. Contact ENERPAC for more
details.
NOTE: The pre-tensioned spring is kept in position by the
key in the plunger. To replace this spring special tooling
is needed. In this case the nut cutter must be returned to
ENERPAC. The spring is not available as a spare part.
6.1 Under water use
When nut cutter is used under water or in severe
conditions, disassemble, clean and lubricate all parts
immediately. Repaint, if necessary. If frequently used
under water repaint the nut cutter with light coloured
corrosion resistant paint.
nut cutters require
6.2 Cutting blade removal / replacement
Sharp cutting blades will prolong the life of your nut
cutter. Replace damaged cutting blades. Blades can be
resharpened by grinding, but avoid removing more than
1,5 mm [1/16"] of material. Nicks can be removed by a
grinding stone.
CAUTION: Do not change the cutting angle.
6.3 To replace the cutting blade: see illustration 5 page
19.
NOTE: To remove the cutting blade you do not need to
disassemble the nut cutter. Just follow steps below.
1 Open the pump release valve to remove hydraulic
pressure. Cutting blade to be fully extended.
2. Disconnect the nut cutter from the hose.
3 Remove setscrew nr. 8.
4 Remove setscrew nr. 9.
5 Pull out cutting blade nr. 5.
6 Inspect the blade edge and shaft for cracks, nicks and
overall sharpness.
7 Re-sharpen or replace cutting blade.
8 Lubricate the cutting blade and insert the blade into
the cutter body with the cutting angle sloping away
from the body.
9 Install setscrew nr. 9 and tighten. Insert setscrew nr. 8
and tighten until flush.
10 Connect the nut cutter and hose. Check nut
cutter operation by advancing and retracting the
blade several times.
11 Check pump fluid level. Add ENERPAC hydraulic oil as
required.
We recommend: Keep spare cutting blades on hand.
periodic
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