Hypertherm Powermax 125 Service Manual

248 Powermax125 Service Manual 808070
9 – Power Supply Component Replacement
Install the transformer
1. Place the new transformer in the power supply while guiding the transformer wires through the opening in the bottom
of the center panel.
2. Slide the tabs on the front of the transformer into the slots in the base of the power supply.
3. Tighten the 2 supplied mounting screws in the base of the transformer to 69.1 kg-cm (60 inch-pounds).
4. Align the 2 bottom fan holes with the corresponding holes in the center panel. Tighten the 2 fan mounting screws to
23 kg-cm (20 inch-pounds).
5. From the power board side, install the 2 ferrite cores over the long transformer wires.
6. Secure the long transformer wires to the output diode bridge by tightening the screws to 40.3 kg-cm
(35 inch-pounds).
7. Secure the short transformer wires to the power board using the screw and bolt removed in step 3 on page 244.
Tighten the screw to 40.3 kg-cm (35 inch-pounds) and the bolt at J26 to 63.4 kg-cm (55 inch-pounds).
Figure 103
8. Complete the following procedures:
a. See Install the fan shroud on page 216.
b. See Install the component barrier on page 173.
c. See Install the power supply cover on page 172.
d. Reconnect the power and gas supply.
J22 J21 J20 J19
J27
WORK
LEAD
J26
J25
+
_
+
_
RED
J18
ORG
J17
RED
J32
J11
B
R
J28
C152 C151
TP7
TP9
TP8
W
R
B
Long transformer wires
Short transformer wires
Power board

Hypertherm Powermax 125 Specifications

General

Output Current	30-125 A
Input Power	15.2 kW
Open Circuit Voltage	300 VDC
Gas Supply	Clean, dry, oil-free air or nitrogen
Input Power Cable Length	10 ft (3 m)
Rated Output Current	125 A
Gas Type	Air or nitrogen
Cutting Capacity	1-1/4 inch (32 mm)
Pierce Capacity	1 inch (25 mm)
Input Voltage	200-600 V, 3-PH
Duty Cycle	100% @ 125 A
Certifications	CSA
Maximum Clean Cut Thickness	1-1/4 inch (32 mm)
Cooling Method	Fan-cooled
Torch Options	Hand