#77-545-018 or equivalent on the insert.
NOTE
"0" ring should be lightly lubricated with "0" ring lubrication
wh ich is silicone based.
12. P lace insert on the shaft.
W hen properly seated gently push the
insert back on the shaft.
13. Install and tighten the threaded plug. Tighten plug until snug. Do
not over tighten.
The flow
m eter is ready for service
W hen installing the flow
m eter be sure
to orient the input and output correctly.
17
pelton whee l faces the IN side of the
housing. Refer to Figure 4-1 detail.
NOTE
IF THE ROTOR
IS INSTALLED BACKWARDS
, THE METER
W ILL
NOT G IVE YOU THE ACCURACY YOU REQU
IRE . REFER TO THE
DETA IL CLOSELY.
Il. Install a new Viton "0" ring
FTB500 Flow m eter m ust be held in place by a vise.
Me ter orien-
tation should be such that the threaded plug is facing upwards.
Using a screwdriver and turning counter clockwise, break the seal and
re move
the plug.
Using tweezers or needle nose pliers, slowly pull the insert out, while
taking care not to da
m age the shaft or lose the thrust stop.
Remove
the rotor by using a pair of tweezers.
Remove
the shaft asse
m bly with s
m ooth needle nose pliers. Care
should be taken in not defor
m ing the shaft and loss of any parts.
Exa m ine the flo
wme ter internals for signs of corrosion or fouling by
foreign
m aterials.
Exa m ine the shaft and bearings for signs of wear or corrosion on the
m ating surface.
If wear or corrosion is present in bearings, obtain new bearings fro
m
stock of the
m anufacturer.
Insert ball bearings in rotor.
10. Gu ide the rotor bearing asse
m bly onto the shaft.
Make sure to orient
the rotor so the cup side of the
1.
2.
3.
4.
5.
6.
7.
8.
9.
The