PMX1000 & PMX1250
RCD Resistor Replacement
Field Service Bulletin
804950 – Revision 2 – July, 2017
Hypertherm Inc.
Etna Road, P.O. Box 5010
Hanover, NH 03755 USA
603-643-3441 Tel 603-643-5352 Fax
www.hypertherm.com
Page 1: ...MX1000 PMX1250 RCD Resistor Replacement Field Service Bulletin 804950 Revision 2 July 2017 Hypertherm Inc Etna Road P O Box 5010 Hanover NH 03755 USA 603 643 3441 Tel 603 643 5352 Fax www hypertherm com ...
Page 2: ...rial numbers prior to PMX1000 1000 013717 PMX1250 1250 007888 Tools Needed Phillips head screwdriver Wire cutters Kit Contents Item Part Number Description Qty 1 109529 24K 13W resistor 2 WARNING ELECTRIC SHOCK CAN KILL Disconnect electrical power before performing any maintenance All work requiring removal of the power supply cover must be performed by a qualified technician See Section 1 of the ...
Page 3: ...See photo below 3 Use wire cutters to remove resistors R119 and R120 Note cut leads next to the surface of the power board WARNING ELECTRIC SHOCK CAN KILL Use a multi meter in VDC mode to discharge the capacitors to less than 10VDC before removing the mounting screws Cut 4 places as shown C98 C94 C98 C94 4 Remove screws from capacitors C94 and C98 as show R119 R120 ...
Page 4: ... supply cover Bleeder hole View hole 2 Torque screws 4 to 20 inch pounds 24 kg cm CAUTION Cross threading the screws may cause the capacitors to fail Note assemble in the following order PCB resistor large terminal small terminal screw C94 C98 Copyright 2017 Hypertherm Inc All Rights Reserved Hypertherm and Powermax are trademarks of Hypertherm Inc and may be registered in the United States and or...
