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Troubleshooting HTC 950 RX
The grinder does not go into standby mode when the key is turned.
Check that the grinder has the correct feed, that all fuses are intact and that the earth fault
breaker has not tripped. Try putting the grinder in standby mode without connecting it to the
mains. If this is not possible, a fuse in the grinder's electrical cabinet needs replacing.
The grinder does not start but remains in standby mode.
Check for error messages (see pages 34-37) and accompanying actions on the frequency
converter display.
The machine shuts down when I run it manually.
Check for error messages (see pages 34-37) and accompanying actions on the frequency
converter display.
The machine shuts down when I run it using the radio control.
Sometimes other equipment can jam radio signals between the grinder and the radio con-
trol. If this happens, COM ERROR will flash on the grinder. When contact between the radio
control and the grinder has been broken for a long period, the grinder will shut down for safety
reasons. To fix this, restart or if necessary switch off the interfering equipment.
Com error flashes on and off.
This could be quite normal if other radio signals in the relevant frequency band are being sent
in the vicinity. Sometimes items of equipment can jam each other and the grinder will shut
down for safety reasons.
The overload lamp lights as soon as I try running a bit faster.
The overload lamp will give a warning to the operator when he exceeds the motor's rated cur-
rent. The frequency converter can give more power than the motor can handle, but will shut
down after a while to protect the motor from damage. Things that influence whether the over-
load lights or not include, speed, mains voltage and the position of the weights on the grinder.
The grinder runs unevenly
If the grinder runs unevenly, this could be due to the grinding holders being worn or a belt
needing to be replaced.
The machine runs evenly but leaves different grinding patterns.
This may happen if the upper belt has come off. Test by spinning the large disk that holds all
the small grinding disks. If it spins freely the upper belt has come off and must be replaced.
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