Section 9. Maintenance
Replacing the air pump
The pump inside the LI-710 has a limited life and will need to be replaced peri-
odically. One replacement pump is included with the instrument spares. Additional
pump replacement kits are available for purchase. This procedure describes how to
replace the pump.
Description Part Number
Pump Replacement Kit 9971-016
Pump (1) 286-17946
Pump O-ring 29×2 mm VITON 75 (1) 192-18249
Pump O-ring 16×1.5 mm VITON 75 (1) 192-18247
M3×0.5-20 Installation Screws (4) 151-18159
2.5 mm Hex Key (1) 611-20555
Table 9-2. The kit includes a pump, hardware, and a hex key.
1
Power off the LI-710 - disconnect the cable.
2
Remove the electronics cover.
Do not apply torque to the transducer housings or arms.
3
Set the LI-710 on a workbench with the arms pointing away from you.
9-4 LI-710 Evapotranspiration Sensor Instruction Manual
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