Troubleshooting; Power Focus 600/6000; Power Focus 3000/4000 - Atlas Copco ETD STR61-50-13-T25 Product Instructions

Electric straight nutrunner

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ETD STR61-50-13-T25

Troubleshooting

Is the unit switched on? Check the earth fault circuit breaker behind the front door. Should it have tripped,

make sure to find the primary fault before resuming operation. Check that the wiring on the remote start

connector is correct. For further information see 9836 4954/9836 7446.

Is the POWER FOCUS switched on and in RUN mode? Check that the correct POWER FOCUS is used

(ST31/ST32/ST61/STR31/STR61-Tensor3-7, ST81-Tensor8-9). Check the fuses for the drive part. Check

Drive parameters, refer to the User Guide of the POWER FOCUS/ drive unit. Check the earth fault circuit

breaker on the backside of the drive. Should it have tripped, make sure to find the primary fault before re-

suming operation. Check that the wiring on the remote start connector is correct. For further information

see 9836 2258.

If the tool becomes very hot

With proper adjustment the tool can handle any normal line jobs that an operator sustains. What can

cause overheating are combinations of some factors: torque above rated, too low speed, too long ramp

time (motor has to give high torque for a long time), very high prevailing torque, very soft joints, short cycle

time. To correct, look over speed, ramp time, tightening strategy. One stage and Ergoramp are most heat

conserving when applicable. Please refer to the User Guide of your POWER FOCUS. If the above correc-

tions are not enough, choose a tool of the next higher capacity.

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