Hypertherm MAX200 Service Manual - Manual (Page 69)

3-28 MAX200 Service Manual
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MAINTENANCE
12. IHS in use – no auto retract
after cut (machine-torch
systems with IHS option). 12.1. No upper limit switch, defective upper limit switch, or
switch improperly installed / adjusted.
See Install the Upper Limit Switch and Cable under Install
the MAX200 with IHS Option in Setup section of
instruction manual #800980 for details.
See also specifications on purchased upper limit switch.
13. No torch UP (machine-torch
systems with THC option) 13.1. Torch lifter motor defective.
Replace torch lifter motor, if necessary.
13.2. Machine interface connections incorrect and/or external
AC or DC source not functioning or interfaced incorrectly.
See Figure 3-10 in Setup section of instruction manual
#800980 for detail and specifications for machine
interface.
13.3. THC board not being activated.
Check to see if D5 on PCB9 illuminates after the STATUS
indicators all extinguish. See Figure 3-15 for location of
D5. If D5 is notilluminated, then PCB9 may not be getting
120VAC from Power Distribution Board PCB6. Check pins,
connectors and associated wiring from REC5 of PCB9 to
REC2 of PCB6.
Repair and/or replace defective component(s), if necessary.
13.4. CR2 relay on PCB9 defective.
See if D3 illuminates during cut sequence. If D3
illuminates and there is no torch motion up and wiring to
machine is O.K., replace CR2.
13.5. Problem with the volt division circuit.
See Voltage Divider Test Procedure later in this section.
13.6. THC PCB10 defective.
See if D3 illuminates during cut sequence. If D3 does not
illuminate, and voltage division and CR2 are O.K., replace
PCB10.
Problem Possible Causes and Solutions