MAINTENANCE
7 - 8
Pump Replacement
1. Turn off UltraRAE power.
2. Open the battery cover, remove the battery pack
,
carefully
unscrew the six screws to open the bottom cover.
3. Unplug the pump from the PCB. Unscrew the two screws
that hold the pump assembly to the PCB. Disconnect the
Tygon tubing that connects the pump to the gas inlet port and
gas outlet port.
4. Replace a new pump assembly. Connect the Tygon tubing to
the gas inlet port. Plug the pump connector back into the
PCB and screw down the pump assembly to the board.
5. Replace the bottom cover and tighten the six. Re-connect the
battery pack. Replace the battery pack and its cover.