Hypertherm MAX200 Service Manual - Manual (Page 83)

3-42 MAX200 Service Manual
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MAINTENANCE
MAX200 Machine Torch Lead Set and Individual Leads Removal and
Replacement
Torch Lead Set
To remove and replace the torch lead set, perform the following procedures. Refer to Figure 3-7.
Removal
1. Disconnect the cap sensor hose (gray) from the adapter.
2. Disconnect the plasma gas hose (red) from the adapter. This connection is lefthand threaded and must be
turned in a clockwise (cw) direction to loosen.
3. Disconnect the pilot shield gas hose (blue) from the A.C.T. coil adapter.
4. Disconnect torch coolant supply hose (blue w/green band) and torch coolant return hose (blue w/red band) from
the bulkhead adapter.
5. Disconnect the torch from the torch lead as described in the Removal and Replacement of Machine Torch
procedure on page 3-40.
Replacement
1. Connect the torch lead to the power supply by reversing directions in steps 1-5 of the above Removal
procedure.
2. Connect the torch lead to the torch by referring to the Replacement (of Machine Torch) procedure on page 3-40.
Note: When using the MAX200 machine torch with extended torch leads (100, 125 or 150 feet)
be aware that the 40A consumable parts cannot be used. There is also a slight chance
that the following conditions could occur during cutting with extended torch leads over
75 feet:
• High ambient operating temperature or high volume production cutting may increase the heat
load on the torch cooling system enough to cause the system to shutdown. If this occurs, allow
the system to cool down. Reduce the ambient temperature, if possible or the cutting “arc on”
time.
• The gas pressure response time will increase at the torch at preflow, plasma on and plasma
off. This may reduce consumable life. The user may have to increase the lead in of the cut
and/or increase the time between successive cuts.
• There may be a slight incidence of the torch misfiring due to the high frequency energy from
the start circuit being dissipated.