Electrical Troubleshooting Procedures LTC Repairwc_tx000429gb.fm 1027.16 Checking Voltage Between Main Circuit Breaker and TerminalStripSee Graphic: wc_gr003096Electric shock hazard. Only qualified personnel should conduct thistest. Do not perform this test if you or the machine are wet.Complete this test with the machine running and the main circuitbreaker in the ON position.7.16.1 Remove the control panel front cover.7.16.2 Using the AC voltage setting on the multimeter, measure the voltagebetween the R/G wire (a) and the B/G wire (c). There should be240V±10%.• If 240V±10% is measured, the proper voltage is reaching the ter-minal strip.• If 240V±10% was not measured, continue.7.16.3 Measure the voltage between the R/G wire (a) of the terminal strip andthe neutral wires at the terminal strip (b). There should be 120V±10%.• If 120V±10% is measured, the R/G wire is carrying the propervoltage.• If 120V±10% was not measured, check the continuity of the R/Gwire between the circuit breaker (d) and the terminal strip (a).Repair/replace the wire as needed.7.16.4 Measure the voltage between the B/G wire (c) of the terminal strip andthe neutral wires at the terminal strip (b). There should be 120V±10%.• If 120V±10% is measured, the B/G wire is carrying the propervoltage.• If 120V±10% was not measured, check the continuity of the B/Gwire between the circuit breaker (e) and the terminal strip (c).Repair/replace the wire as needed.WARNING
