Use and Care Manual

29
14.0 Troubleshooting PM-2X2R and PM-2X4SP CNC routers
* WARNING: Some corrections may require a qualified electrician.
14.1 Mechanical and electrical problems
Symptom Possible Cause Correction *
Motor will not start: fuses
blow or circuit breakers
trip.
Short circuit in line cord or plug. Inspect cord or plug for damaged insulation
and shorted wires.
Short circuit in motor or loose
connections.
Inspect all connections on motor for loose or
shorted terminals or worn insulation.
Incorrect fuses/breakers in power line. Install correct fuses or circuit breakers.
Motor attempts start, but
will not turn.
Jammed spindle. Disconnect from power, try turning spindle by
hand. Check reason for jamming.
Motor faulty. Replace spindle.
Spindle run without coolant. Replace motor. Maintain coolant level.
Incorrect voltage. Check incoming voltage.
Motor overheats (shuts
off).
Dull cutting tools. Use sharp tools.
No coolant in reservoir, or blockage in
coolant path.
Fill reservoir, check for obstacles in flow path.
Motor stalls, resulting in
blown fuses or tripped
circuit.
Motor overloaded. Reduce load on motor.
Short circuit in motor or loose
connections.
Inspect connections on motor for loose or
shorted terminals or worn insulation.
Low voltage. Correct low voltage conditions.
Incorrect fuses or circuit breakers in
power line.
Install correct fuses or circuit breakers.
Router cutting depth
inconsistent.
Loose cutter. Tighten cutter in spindle collet.
Spoil boards not flat. Check that spoil boards are flat and clean
prior to fitting job.
Excessive play in Z-axis ball screw. Inspect and correct if needed.
Machine won’t power on. E-stop switch engaged. Release red E-stop switch.
No incoming power. Check power plug connection. Check
condition of power cable.
Faulty start switch. Inspect and replace.
Internal breaker faulty. Replace breaker.
Machine will not home. Incorrect work space in tool path. Verify proper work space within tool path.
Controller has incorrect coordinate
system.
Verify that controller reads 1X,1Y,1Z. If not,
Press “Menu” and “1” at same time to reset.
If unsure, restore information from Backup
File.
Limit switches damaged, disconnected
or misadjusted.
Inspect limit switches and correct problem.
Machine vibrates. Machine not level. Level machine.
Levelers not all the way down. Lower levelers to floor.
Fasteners not tightened. Inspect all fasteners for tightness.
Router cutting depth not
consistent.
Bit is loose in collet. Tighten bit.
Spoil boards not flat, or have debris. Verify that spoil boards are flat and clean.
Z-axis ball screw has excess play. Adjust tightness of ball screw.
Table 6