Daihen OTC XD350, Руководство по обслуживанию

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CPXD-350,500 SERVICE MANUAL
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1. Caution in maintenance (continued)
1.3 Handling of main circuit component
(1) When attaching thyristor module to heat sink, apply micro computer and fix by designated
torque.
(2) Use torque of specific value also to clamp terminal.
1.4 In case of insulation resistance test
When measuring insulation resistance and testing withstand voltage, follow the steps below.
(1) Disconnect the primary cable to the switch box and welding cable for isolating welding power
source.
(2) Remove earth cable (line No.80 which is between C2 and C3) of output terminal from the case.
Then insulate this earth cable due to not touch the case.
(3) Short-circuit the contact interval (line No. 1, 4) of magnet switch.
(4) Turn on the control power source S1.
Be sure to reconnect the cables after carrying out measurement of insulation resistance and
withstand voltage test.
1.5 Only to check operation of sequence
When only to check operation of sequence, follow the steps below.
(1) Turn off the control power source.
(2) Take off CN23, 24 on PCB C0045Q.
(3) Turn on the control power source and check the operation.
Be sure to reconnect the cables after checking.
1.6 Investigate the WARNING cause
There are any WARNING in the welding machine, narrow down a cause refer to” Welding error
table” and “Troubleshooting”. Then settle the WARNING refer to “Checking method for WARNING”