B-144-12-E
20
③
Remove the Oval rotors (201) from the measur-
ing chamber and inspect them for condition.
(a) Inspect the Oval rotors to see if they are
jammed with foreign solids.
(b) Check the rotors, shafts and other members
for wear.
(c) Inspect the measuring chamber and the inner
wall of front cover for damage or any other
sign of unusual condition.
Upon completion of these inspections, clean
the Oval rotors, rotor shafts, measuring
chamber and front cover with clean water or
suitable solvent thoroughly.
CAUTION
Score marks, scratches, high spots due to impressions, or other flaws should be
reconditioned flat with oil stone or other tool.
10. 2 Size 50 Meter Body Assembly Procedure
PRECAUTIONS BEFORE ASSEMBLY
Oval rotors, inner walls of the rotor shafts, inner wall of the measuring chamber, inlet
and outlet ports, and inner surface of the rear cover should be thoroughly washed clean,
completely removing dust, grime and other foreign matter.
①
Rotor Installation
Rotor installation is correct if the sides where
signal generating magnets are embedded face the
transmitter (bottom of the measuring chamber) and
the sides with match marks (
・
)(
・・
) face the rear
cover.
Carefully install the rotors with the 1st rotor (match
mark "
・
") on the shaft with "1" stamped on the
outside of measuring chamber and the 2nd rotor
(match mark "
・・
") on the shaft with "2" stamped.
Ensure that the match marks are in alignment as
shown in the photo.
②
Confirming the Rotor Gear Engagement
Hand rotate the rotors to make sure of correct
gear mesh.
Rotor
Shafts
Measuring
Chamber
Rotors
Flow Direction Arrow and
2nd Rotor No.
2nd Rotor
IN
OUT
1 st Rotor
Signal Magnets
Flow Direction
Arrow and 1st Rotor No.
IN
OUT
Direction of Rotor Rotation
Match Marks
2
1
