Pag.2
MAINTENANCE
Dismantling.
The meter has been designed to require the minimum of
maintenance. However, genera! planned maintenance is
recommended and the following procedures may be adopted
maintenance purposes:
Isolate the meter from its source of supply and if possible
drain it.
Remove the meter from the pipeline by undoing the union
nuts and springing the pipework slightly to disconnect the
connections or with flanged version of the meter by
undoing flanged bolts and sliding the meter from between
the system flanges.
Empty liquid from the meter.
Under the socked head cap screws from one end of the
meter and remove the end and the top plates. Some
resistance will be felt when removing the plate as an "O"
ring seal is located on the end plate spigot.
Remove the disc chamber.
Remove disc by gently lifting from the chamber.
Remove barrier plate.
Having completely dismantled meter all component may be
thoroughly washed in warm soapy water. On no account should
abrasive materials be used to clean the meter parts as meter
accuracy relies upon the maintenance of controlled clearances.
Inspection and Assembly
Inspect the barrier plate for wear, which if present will
manifest itself in the form of
"
waisting
"
or hollowing of the
barrier surface. Any reduction in barrier thickness will permit
the passage of un measuring liquid. if in doubt a new barrier
should be obtained and fitted.
Examine the disc chamber plates for wear and scouring, the
lotter will only occur in extreme cases when large abrasive
