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10
Maintenance
Only qualified maintenance personnel are to perform the following repairs.
Pump Replacement
1. Turn off all switches and unplug the machine.
2. Empty solution tank.
3. Open spray gun valve until spray stops.
4. Set machine on its side.
5. Remove bottom cover.
6. Disconnect hose from solution tank.
7. Disconnect pump connector from circuit board.
8. Remove solution hoses from fittings.
9. Remove fittings from pump.
10. Remove screws that hold pump to bottom cover.
11. Reverse process to install new pump.
12. Check for leaks before installing bottom cover.
Battery Replacement
The battery should last for many years, depending on use. In the event that the battery needs replaced, please
follow the steps below. Use best electrical practices while performing battery replacement.
1. Turn off all switches and unplug machine.
2. Empty solution tank.
3. Open spray gun valve until spray stops.
4. Set machine on its side.
5. Remove bottom cover.
6. Disconnect hose from solution tank.
7. Disconnect connectors from battery.
8. Remove battery strap and properly dispose of old battery.
9. Connect new battery connectors on wires. Be sure to connect black wire to the negative battery terminal.
10. Install new battery in machine with battery strap.
11. Reconnect solution tank hose and reinstall bottom cover.
12. Turn machine on to test function.
8.644-086.0 - Manual PS 4-7 Bp OBC Mister
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