Hypertherm HT4100 Plasma Arc Cutting System Operating - Manual (Page 39)

OPERATION
3-11 HT4100 Instruction Manual: Operation
• Cut angle not square. Causes can be:
1. Wrong direction of machine travel.
High quality side is on the right with respect to the forward motion of the torch.
2. Torch standoff (torch-to-work distance) is not correct (check Cut Chart information).
3. Cutting speed is not correct (check Cut Chart information).
4. Arc current is not correct (check Cut Chart information).
5. Damaged consumable parts (see Changing Consumable Parts ).
• Short consumable life. Causes can be:
1. Arc current, arc voltage, travel speed, pierce delay time, gas flow rates, or initial torch
height not set as specified in
Cut Charts .
2. Attempting to cut highly magnetic metal plate (some metals such as armor plate with a high
nickel content) will shorten consumable life. Long consumable life is difficult to achieve when
cutting plate that is magnetized or becomes magnetized easily. Call Hypertherm's Technical
Service department (1-800-643-9878) if you suspect the type of metal you are cutting is
causing shortened consumable life.
TECHNICAL QUESTIONS
Claims for defective merchandise -- All units shipped from Hypertherm undergo rigorous quality
control testing. However, if your system does not function correctly:
1. Recheck all pre-installation and installation requirements and connections in HT4100
Instruction Manual: Installation (P/N 801650).
2. If you are unable to solve the problem, call your distributor. They will be able to help you, or
refer you to an authorized Hypertherm repair facility.
3. If you need assistance, call our Customer Service or Field Service group at 1-800-643-9878.
CUT CHART
The Cut Chart on the following page provides the necessary information for the operator using
the HT4100 system to be successful in plasma arc cutting. The HT4100 provides a wide travel
speed operating window: usually
±
10 ipm (
±
254mm/min) on most materials. The Cut Chart data
are for making drop cuts with minimal dross.
Caution: Before cutting, check all settings and adjustments and check for
damaged torch parts and worn consumable parts.
Note: Plasma arc may extinguish if material intended to be cut is thinner than the minimum plate
thickness listed in the cut chart tables.
6-96