Badger Meter PVC Tee - 1 1/2 to 4"" - Manual (Page 9)

Installation & Operation Manual
IMPELLER ASSEMBLY AND SHAFT REPLACEMENT
If you are replacing an existing Badger Meter sensor and have already calibrated your flow monitor/endpoint, no calibration
changes are necessary. For installation of a new flow monitor or for relocation of a sensor in a new pipe size, please refer to
the calibration instructions in flow monitor manual.
1. Depressurize and vent pipe and remove power from the installation from which sensor is to be removed.
2. Remove the clevis pin.
3. Remove the sensor from the tee.
4. Note the impeller blade orientation relative to flow arrows. In order to maintain proper calibration, the impeller will have
to be reinstalled in the same manner with the impeller blades pointing toward the flow source as indicated by the
flow arrows.
5. To remove the old impeller blade assembly, push the old shaft out of the sleeve with the new shaft (or small diameter rod)
just far enough to grab the end with a pair of pliers and pull the shaft completely out. The impeller assembly will now be
free, and will drop out.
6. Inspect the shaft and bearings for wear, and replace as necessary.
7. See Figure 3 below. To reinstall, position the impeller in the cavity oriented as in Step 4 so that the impeller blades
point into the flow direction. The flow direction arrow on the top of the sensor housing should point downstream with
the impeller blades pointing upstream.
8. Carefully push the shaft through the housing and impeller, taking care not to damage bearings. Make sure that the shaft is
inserted far enough so that it clears the housing on each side of the impeller housing.
OTE: N If shaft is not carefully installed, the bearing can be deformed, preventing free rotation.
9. Inspect the O-rings for damage and replace as necessary. Clean the O-rings and the sleeve and relubricate with silicone
grease from the packet provided, or use some other acceptable lubricant.
10. Install the sensor into the tee so the flow arrow points in the direction of the actual flow.
11. Install or replace the clevis pin.
This completes the replacement procedure. The system may now be repressurized and tested.
NOTE DIRECTION OF ARROW
USE PLIERS HERE
NOTE DIRECTION OF
IMPELLER
USE METAL PIN TO
REMOVE CERAMIC SHAFT
Figure 3: Impeller Assembly and Shaft
Page 9 January 2013