Jet JPT-310HH, Operating Instructions Manual

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Fig 10
One screwdriver can be used to help
hold the cutterhead in position while
the other one is used to remove the
screw.
It is advisable to rotate all inserts at
the same time to maintain consistent
cutting.
However, if one knife inserts develops
a nick, rotate only the affected insert.
Each knife insert has an etched
reference mark so you can keep track
of the rotations.
Note:
When removing or rotating inserts,
clean saw dust from the screw, the
insert, and the cutterhead platform.
Before installing each screw, lightly
coat the screw thread with machine
oil.
Securely tighten each screw which
holds the knife inserts before
operating the planer!
Loose inserts can be propelled at high
speed from a rotating cutterhead,
causing injury.
Unsuitable, incorrectly mounted, dull
or cracked carbide inserts can work
loose or increase the risk of kickback
considerably.
Use genuine Jet replacement parts
only.
Carbide inserts can not be
resharpened.
Do not extend tool when tightening the
knive insert screw. Do not hit the tool.
Close and lock the cutter block cover
after insert changing or rotation has
been completed.
Reset fence and cutter block guard.
7.2 Thickness Table Adjustment
The thickness table is factory adjusted
parallel to the cutterhead.
Disconnect machine from power
source to inspect.
Use a gauge block (B) and gently rise
the table (C) to inspect (Fig 11).
Fig 11
To adjust, loosen the 2 hex head
screws (H) on one side and rotate the
grub screws (K).
Tighten the hex head screws.
8. Maintenance and inspection
General note:
Maintenance, cleaning and repair work
may only be carried out after the
machine is protected against
accidental starting.
Pull the mains plug!
Clean the machine regularly
Inspect the proper function of the dust
extraction daily.
Defective cutting knives must be
replaced immediately.
Before starting any work, check the
mobility of the anti-kickback fingers
(must fall down by their own weight).
Defective safety devices must be
replaced immediately.
All protective and safety devices must
be re-attached immediately after
completed cleaning, maintenance and
inspection work.
Repair and maintenance work on the
electrical system may only be carried
out by a qualified electrician.
Drive Belt:
The belt tension must be inspected
regularly.
Motor Break (JPT-410HH):
The motor break works electro-
mechanically (break motor).
If breaking time should exceed 10
seconds, the motor break assembly
needs to be replaced. Contact your Jet
service station immediately.
9. Trouble shooting
General note:
Maintenance, cleaning and repair work
may only be carried out after the
machine is protected against
accidental starting.
Pull the mains plug!
All protective and safety devices must
be re-attached immediately after
completed cleaning, repair and
maintenance work.
Repair and maintenance work on the
electrical system may only be carried
out by a qualified electrician.
Motor doesn’t start
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
*Overload has reacted-
Wait and restart.
Machine vibrates excessively
* Stand on uneven floor-
adjust stand for even support.
*carbide insert broken or missing-
replace insert immediately.
Cutting surfaces is bad
*dull carbide inserts-
rotate or replace inserts
*Cutter knives blocked by chips-
remove chips.
*Too heavy a cut-
make several passes.
*Knives cutting against grain-
plane work piece in opposite direction.
*Work piece inhomogeneous
*Moisture content too high
Snipe
*Inadequate support of long boards-
use helping roller stand.
*dull carbide inserts-
rotate or replace inserts
*Knives too high above table-
set the outfeed table higher
*Work piece twisted-
plane work piece before thicknessing.