Troubleshooting - Challenge CHAMPION 370 TC Instructions And Parts Manual

9.0 Troubleshooting

9.0 Troubleshooting
Never work on this machine with the power on unless the
instructions say the machine power must be on. Lock the power off at the wall disconnect
switch. See Power Lockout Procedure, page 5.
WON'T START
1. Fuse blown/circuit breakers tripped 4. Cut button defective
2. Starter defective 5. Check error codes
3. Loose plug or wire
CUT BUTTONS PUSHED- MACHINE SHUTS OFF
1. Knife and clamp are out of sequence. Turn off power and turn back on.
2 Check clamp and knife up limit switches.
3. When cutting a full pile, the clamp up limit switch does not break contact, either adjust limit switch
or cut down on pile height.
4. Defective circuit board
CUT BUTTONS ACTIVATED- WON'T CUT
1. A cut button is defective.
2. Motor wired wrong, going in opposite direction of the arrow sticker on the motor
3. Counter Balance valve on the knife cylinder is defective
4. Counter Balance valve pressure is set too high
5. Either down solenoid in valves inoperative
6. Knife up limit switch is not properly adjusted
7. Defective circuit board
8. Electric eyes are being tripped
ERRATIC OPERATION- POWER LOSS
1. Low hydraulic oil level
2. Debris in relief valve
3. Defective pump
4. Oil bypassing clamp cylinder seals
CLAMP WON'T OPERATE
1. Bind in linkage or gibs
2. Clamp pressure reducer valve set too low
3. High pressure solenoid defective
4. Relief valve defective
5. Clamp return spring defective
CLAMP WON'T HOLD PRESSURE
1. Clamp cylinder seals worn
2. Pressure valve setting too low
3. Clamp not parallel to table
CLAMP WON'T BOTTOM
1. Clamp cylinder out of adjustment
2. Clamp return spring broken or out of adjustment
CLAMP NOT PARALLEL TO TABLE
1. The clamp connecting rod is out of adjustment.
53