Record Power FM25 Series, Original Instruction Manual

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8. Operation
9. Setting the Chisel & Bit
Fig 9.1
Various morticing machines require various bit shank lengths. A new bit has
a shank of universal length which will be longer than needed. The shank of
the bit is unhardened so it can be simply cut to length using a hacksaw.
Carefully determine the necessary length, ensuring there is sufficient shank
length to securely fix it into your machine chuck when set up with the
correct clearance between chisel mouth and nose bit.
The correct setting of chisels and bits is vital for successful mortice cutting
and long tool life.
Place the chisel into its socket in the chisel holder then put a coin about
1/16” (1.5mm) thick between the chisel shoulder and the chisel holder face
to prevent the chisel being pushed fully home (see Pic 6) and tighten the
chisel securing screw.
Put the bit into the drill chuck. Push it as far as possible into the chisel and
secure the bit in the chuck. Loosen the chisel securing screw, remove the
coin then push the chisel fully home in the chisel holder socket. Re-tighten
the chisel securing screw, see
Fig 9.1
.
This setting will allow sufficient clearance for the bit to run smoothly in the
chisel and cut just ahead of the chisel. This set up allows the chips to pass
inside the chisel body and exit through the slot in the chisel side. Position the
chisel so that the chips are emptied into a previously cut part of the mortice,
see
Figs 8.3 & 8.4 .
Ensure the correct clearance between the chisel and bit is
always maintained.
Ensure the chisel and bit are securely held in the chisel holder and chuck.
If the bit is not tightly secured it may move up into the mouth of the chisel
during use. The side lips of the bit will rub against the chisel, the wood chips
will not be able to pass up the inside of the chisel and out through the side
slot. This will eventually cause the chisel to break.
For best results only Record Power chisels and bits should be used with
this machine.
Warning: Ensure the chuck key is removed from chuck before
switching ‘ON’ machine. Failure to do so could result in ejection
of chuck key leading to personal injury of the operator.
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In the event of a blockage or if the machine stalls:
In the event that the machine stalls due to a blockage that prevents the drill
bit from rotating (for example, waste material becoming trapped between
the chisel and bit) immediately switch the machine off by pressing the red
button marked ‘O’ on the switch.
Locate and rectify the source of the blockage. It may be necessary to
completely remove the chisel and bit from the machine in order to remove
the waste. Clean and re-fit the chisel and bit to the machine. Rotate the
chuck of by hand to ensure free rotation of the bit within the chisel and
adjust as necessary.
To re-start the machine press the green button marked ‘I’ on the switch.
In the event of a power failure:
The morticer is fitted with a no volt release (NVR) switch to protect the user
against automatic starting of the machine when power is restored after a
power failure.
In the event of a power failure, first locate and rectify the source of the
failure. If the fault is within the power circuit of the workshop, there may be
an underlying cause (circuit overload etc.) that should be investigated by a
qualified electrician, before attempting to restore the power source.
Once the power is restored, the machine can be re-started by pressing the
green button marked ‘I’ on the switch.