Omega FPDM 1000 SERIES, User Manual

Page: 6 / 20

4
Check rotor operation by turning either
of the rotors. If the rotors are not in mesh
correctly or do not move freely, remove
one of the rotors and replace it correctly
at 90 degrees to the other rotor. Recheck
the operation of the rotors.
4. Inspect the gears in the meter cap for
wear. Replace if required - refer to spare
parts on page 6.
5. Replace the O-ring into the groove in
the meter cap. If the O-ring has been
distorted or is damaged in any way, re-
place it with a new part.
6. Replace the meter cap. Make sure the
meter cap and the gear on the rotor
meshes correctly with the gear in the
meter cap. Insert the allen screws and
tighten in the sequence 1, 4, 2 and 3.
7. Inspect the bevel gear, O-ring and out-
put gear for wear or damage. Replace
faulty components if necessary.
8. Replace the output shaft, bush and seal.
Disassembly of output shaft:
a. Remove the bevel gear.
b. Remove the circlip and push out the
output shaft assembly, including the
washer.
c. Remove the seal.
d. Carefully press out the output shaft
bush (if required).
Assembly of output shaft:
a. Carefully press the new output shaft
bush into place. (Use Loctite Primer
7471, as per instructions, followed
by sealant Loctite 262.)
b. Insert a new seal into the groove of
the output shaft bush.
c. Replace the output gear and washer
and replace the circlip to lock the
output gear shaft into place.
d. Replace the bevel gear and tighten
the grub screw onto the flat face of
the shaft.
9. Place the O-ring into the groove in the
meter cap. Replace the O-ring seal if
required.
10. Place the coverplate onto the meter.
Replace the coverplate screws and
tighten the six cap head screws firmly.
11. Place the lower coverplate of the regis-
ter into position. Replace the four screws
and tighten.
12. Position the register correctly on top of
the lower register cover. Replace the four
screws and tighten.
13. Test the meter by turning the rotors with
a finger or by applying low air pressure
(no more than a good breath) to one end
of the meter, before returning meter to
the line.