We have a HPR260 at work and we have been at a stand still for the last few days from a problem with the gas selection console. It all started when I was in the middle of cutting some parts for a job, when the torch went down to make the cut, and just stop. The machine told me I had no pressure on my CG2. I checked over all my gas lines, and everything had the proper pressure on them. We ended having to call Hypertherm, and we went through a series of troubleshooting steps.
During the troubleshooting process, we notice that the D11 light on the valve-driver board, the tech told us it could be one of two things and he had us switch out the control board from the metering console with the one in the selection console. It gave the same problem with the D11 light not coming on. After assuring that the board was getting the correct power it needed, the tech told us we had a bad valve-driver board and it needed to be replaced.
After receiving the new board and installing it, we still had the same problem of the D11 light not coming on as the old board, after a few restarts, we ended with no lights on the valve driver board coming on. After about an hour of troubleshooting with the tech, we ended up removing all the solenoids valve from the block inside the selection console. We blew air through all the inlet ports on that block and we had air pass through all of them, except for where the 2nd solenoid valve goes on the O2 line, we try to see if we could blow anything out, but we could never get anything to come out or get air to come out of the hole.
We ended up putting all the parts back together. Before, we could get air in the air and N2 lines, but not the O2. After trying to blow the block out, we can no longer get any air to come out of the air, N2, or O2.
As it stands now, we cannot get any air pressure pass the first set of solenoid valve in the selection console and none of the lights on the valve driver PCB will come on.
Any help will be greatly appreciated.
Best bet is to continue working with the Hypertherm tech service department. They are the experts on this equipment.....which has a complex gas flow control system. The other possibility....if you are at a standstill is to schedule a service trip from an authorized Hypertherm technician....the tech service department or the OEM machine builder that sold you the plasma system can help to arrange a service visit.
Jim Colt Hypertherm