T&R KV50-20D mk2, Руководство по эксплуатации и техническому обслуживанию

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3. MAINTENANCE
The equipment should be inspected for damage before use. Inspect all cables and pay particular
attention to earth cables.
The only maintainable part in the control unit is the regulator brush. This should be inspected
for damage and wear when the unit is re-calibrated.
3.1 Removal of control unit from case
a. Remove the lid from the control unit and rest it on the front panel handles.
b. Remove all four fixing screws from the underside of the unit.
c. Lift the case off the unit. Be careful of the earth lead connected to the case.