Hypertherm XPR300 - Specifications; Terminology

Plasma Power Supply
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XPR300 Field Service Bulletin 809970 27
Replace the coolant pump and motor assembly
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See Coolant system on page 122 for location and part number.
Remove the coolant pump and motor assembly
1. Complete the following procedures:
a. Remove the power from the cutting system.
b. See Remove the right-side (liquid-cooling-side) panel on page 60.
c. Drain the coolant. See Remove old coolant from the coolant system in the Maintenance
section in the XPR300 Instruction Manual (809480).

Keep all nuts and screws that you remove.
2. Disconnect the power connector (J21) from the
wire harness.
3. Disconnect the solenoid valve connector (J7) from
the motor.
4. Use a 1-1/2 inch, open-ended wrench to remove
the 1 inch hose from the pump.
5. Disconnect the tube from the push-to-connect
fitting on the solenoid valve . See How to use
push-to-connect fittings on page 12.
6. Disconnect the tube from the push-to-connect
fitting on the coolant bypass check valve .
7. Use a 10 mm, hexagonal-socket wrench to
remove the 2 screws from the pump-motor
bracket.
8. Pull the pump out from the tabs in the sheet metal.
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CAUTION
This equipment is heavy.
Use a two person lift.