B-144-12-E
36
12. SENSOR REPLACEMENT PROCEDURE
NOTE: Size 55 meter body is shown here. The same procedure applies to other size models.
①
Take off four hex socket head screws on the register.
②
Carefully draw the register assembly out. Exercising
care not to bump the sensor against adjacent com-
ponents, draw it out in the horizontal direction.
③
Take off four hex socket head bolts and separate the cover.
⑤
Holding the electronics unit in both hands, carefully
draw it out.
CAUTION: Use extra care not to damage the leads by
forcibly pulling the sensor fitting disc.
④
With screwdriver, take off two fitting screws holding the
electronics unit.
⑦
Using C-shaped stop ring pliers, remove the C-shaped
stop ring for the shaft. The sensor unit is now separable
from the register housing.
⑥
Uncouple the connector from the sensor unit at back of
the electronics unit.
⑧
Loosen the sensor retainer fitting screws (M4) With
screwdriver, remove the sensor retainer and draw out
the sensor unit.
⑨
Install a new sensor unit through the opening through
which the old sensor unit was removed and assemble
in the reverse order of disassembly.
⑩
At register installation in the meter body, match the flow
direction of the meter body with the arrow on the sensor
fitting disc.
Adapter
Register Assembly
Electronics Unit
Connector
C-Shaped
Stop Ring
158 152
153
Sensor Fitting
Disc
Sensor Unit
Flow Direction
Arrow
Hex Socket
Head Bolts
Electronics Unit
Connector
Sensor Retainer
Fitting Screw
Sensor
Fitting Disc
Sensor
Opening
Blind Plug
(153)
LOCATION OF SENSOR INSTALLATION OPENING
Register Assembly
Register Assembly
