Hypertherm MAX200 Machine Torch Plasma Arc Cutting System - Manual (Page 74)

MAX200 Instruction Manual 4-9
14
OPERATION
Common Cutting Faults
• The workpiece is not totally penetrated. Causes can be:
– The current is too low.
– The cut speed is too high.
– The torch parts are worn.
– The metal being cut is too thick.
• Dross forms on the bottom of the cut. Causes can be:
– The cutting speed is too slow or too fast.
– The torch parts are worn.
Duty Cycle
The duty cycle is reduced if:
• The input line voltage is less than nominal, due to a long power cord, poor utility supply, etc.
• You are cutting material greater than two inches thick.
• The work clamp is not making a good electrical contact to the workpiece due to paint, rust, etc.
• Arc voltage is greater than 150 volts (at 200 amps).
Claims and Technical Questions
Claims for damage during shipment — If your unit was damaged during shipment, you must file a claim with the
carrier. Hypertherm will furnish you with a copy of the bill of lading upon request.
Claims for defective merchandise — All units shipped from Hypertherm undergo rigorous quality control testing.
However, if your unit does not function correctly:
1. Read the Troubleshooting section of this manual. ou may find the problem is quite easy to fix, such as a loose
connection.
2. If you are unable to solve the problem, call your distributor. He will be able to help you, or refer you to an
authorized Hypertherm repair facility.
3. If you need additional assistance, call our Customer Service or Field Service group at 1-800-643-0030.