Removing The Pump - BIRD Moduload 8640 Series Operation Manual

Moduload® RF Load Resistor
9. Record the wire colors and locations then disconnect the pump motor wires from the front panel terminal
block (TB 1) (
Figure 10
10. Remove the screws that secure the front panel to the unit then tilt the top of the panel away from the unit and
remove the two water hoses from the load water pipes.
11. Remove the front panel with the load attached.
12. Remove the nuts and lock washers that secure the load to the panel.
13. Remove the socket head cap screws that secure the water chamber to the load then remove the water
chamber.
14. Inspect the water chamber to be sure it is in good condition and that the inner o-ring seal is good. If
appropriate, order replacement parts.
Figure 9 Front Panel Wiring

Removing the Pump

Disconnect the unit from all power sources before servicing. The unit may be
energized from multiple sources. The potential for electric shock exists.
1. Drain the coolant (See
2. Remove the load (See
3. Disconnect the pump wire leads from the terminal block on the inside of the front panel.
4. Loosen the hose clamps on the input and output hoses to the pump.
5. Remove the hoses.
6. Loosen the hose clamp on the drain tube at the base of the pump.
7. Remove the drain tube.
8. Unscrew the bolts securing the base of the pump to the unit.
9. Remove the pump, carefully, from the unit.
Note: Note the position and direction of the fittings, then twist them off counterclockwise.
10. To replace the pump, reverse the above steps.
Note: When replacing the threaded fittings, carefully coat the external threads, ONLY, with a pipe
sealing compound. Coating only the external threads reduces the chances of contaminating the cool-
ant.
18
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"Changing Coolant" on page 12
"Removing the Load" on page 16
WARNING
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