OPERATION AND MAINTENANCE MANUAL
TR-IS SERIES
Centrifugal Pump
12
TR-IS
A
SS
E
M
B
L
Y
Figure
E
3c.
Place only the rotary holder of the mechanical seal (
6A
) together with its respective O-ring
(
6H
) until it seats on the shoulder of the stub shaft. Put the impeller key (
12
) on the keyway of
the stub shaft. The impeller key should not interfere with the mechanical seal rotary holder.
Take the impeller nut (
3
) and place the impeller gasket (
4
) on it. Then place the impeller on the
stub shaft and tighten with the impeller nut; compressing the assembly.
Figure F
.
Use a 5/8” hexagonal socket for models
114
and
214
. Use a 7/8” hexagonal socket for the rest of
models to tighten the nut.
To prevent the stub shaft-impeller assembly from turning, insert
a Ø3/8”
plastic or soft dowel in
the bore that has the stub shaft on its side. Thus, the impeller nut can be tightened or loosened.
Figure G.
Figure
G
Remember, water or dish soap can be used to lubricate or stick the O-rings and gaskets to the
metal elements. This will help facilitate assembly.
12
6H
6A
Figure
F
Ø3/8” rod
