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Refer to the machine specification sheet at the front of the operator’s handbook to establish
the correct size of cable required. Undersize cable will lead to voltage drop at the motor
terminals.
Do not attempt to wire single-phase machines into a 13-amp plug socket.
Ensure that there is no voltage at the supply lead before connecting.
It is important to check rotation of the cutterblock which should be clockwise when viewed
from the starter side of the machine. If necessary you can change the rotation by swapping
any two of the brown wires from the supply side on the terminal block.
Should you encounter problems on start up check for the following likely causes:
PROBLEM
LIKELY CAUSE
CORRECTIVE ACTION
Fails to start
Main supply switched off
Overload tripped
Fuse blown
Loose wire
Coil failure
Check main switch
Reset overload
Check and replace fuses (check all three on three
phase)
Check all connections
Check circuit of hold in coil
Overload trips
during starting
Low voltage
Low voltage
Low voltage
Three phase machines
only: 1 fuse blown
Machine jammed
Check supply-voltage both on no load and on
moment of switch on. Allowed var/minus 6%
Check that correct cable size has been used to
install the machine. Change if necessary.
Long runs of cable can cause voltage drop. Check
that voltage is not outside the minus 6% tolerance.
Re-site the machine nearer supply or increase the
cable size to compensate.
It is possible for 3 phase machines to operate with
only 2 phases of the supply. This will create an
overload situation and will eventually cause
premature failure, this is known as single phasing.
Check all fuses.
Check spindle is free to rotate, clean as necessary.
Slow
acceleration
Low voltage
For a motor (particularly a single-phase permanent
capacitor motor) to reach its required starting
torque a healthy line voltage is essential.
