Hypertherm Powermax1250 Service Manual - Manual (Page 76)

4
MAINTENANCE
powermax1250 Service Manual 3-43
Heat sink component replacement
1. Unscrew the old components from the heat sink and use isopropyl alcohol to remove the old thermal grease.
2. Install the new components to the heat sink as shown below.
3. Use new thermal pads on the temperature sensor.
4. Use thermal grease on all components. Apply a thin coat (3 mils or paper equivalent) to the component, install
with screws, and tighten to the required torque.
5. Clean the excess grease from the heat sink.
Notes:
Apply thermal grease and torque to 8 in-lb (9 kg cm).
Apply thermal grease and torque to 20 in-lb (23 kg cm).
Apply thermal grease and torque to 35 in-lb (40 kg cm).
Thermal pad
Thermal grease,
10cc
3
3
3
3
1
1
2
1
2
3