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HTC 420 VS

6. Troubleshooting

This chapter describes all the errors that may occur and how to deal

with them. If the error cannot be dealt with, or if there are other

errors, contact your nearest retailer. See Contact Information at the

start of the manual.

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2.0

Check if the emergency stop switch on the control panel is

pressed. Reset the switch by turning it 45°.

Check if the power connection is correct. Check that there

is full voltage on the motor's phase/phases. If the phase/

phases do not have full voltage, the converter is faulty:

- Reset the electronics by turning the Grinding

knob to "Reset". If this does not help, carry

out a reset procedure as follows Resetting the

frequency converter on page 27.

- Check the error code in the converter, see the

error code table in chapter Electronic error

codes on page 25.

Check the fuses and contactors in the control cabinet.

Recondition the grinding holder by changing the sleeve

(112332 on page 37).

Check that the chassis is straight.

Check that there is movement between the chassis and

grinding head. If necessary, loosen one of the two pins

(310374 on page 29) in order to increase the movement

between the chassis and grinding head.

Recondition the grinding holder, see under The machine

vibrates or wears the tool unevenly on page 23 above.

Check that the chassis is straight.

Troubleshooting