Hypertherm Powermax30 AIR Service Manual - Manual (Page 79)

Powermax30 AIR Service Manual 808850 79
5 – Troubleshooting and System Tests
Figure 10
6. If the AC voltage is incorrect, make sure you have power to the unit. If you do have power, inspect the power cord for
damage, and replace if necessary. See Replace the power cord and strain relief on page 107.
7. If the power source and power cord are functioning correctly, disconnect the power cord again and reconnect the
two wires to the power switch.
8. Reconnect the electrical power and set the power switch to ON (I).
9. Measure the AC voltage from J1 to J2 (labeled “AC” on the back of the power board). This value should be the same
as the incoming line voltage. If it is not, check the power switch and replace if necessary. See Replace the power
switch on page 116.
Figure 11
10. If the power-ON LED is still illuminated, perform Test 2 – power board voltage checks on page 80.
Single phase power supplies
Designator CSA wire colors CE wire colors
L (live) Black Brown
N (neutral) White Blue
PE (ground) Green Green/yellow
WORK LEAD (BLK)
AC AC
R w
TORCH START
BLK
BLK
B
TORCH START
N
L
PE
J1, J2 (AC)