Ampco Pumps Company LF 401, Инструкция по эксплуатации и техническому обслуживанию

Страница: 29 / 36

29
4. Assemble single seal and driver assembly.
Insert the seal driver o-ring and the single seal
o-ring into the seal driver. Insert the single seal
spring into the seal driver. Then press the rotat-
ing single seal into the seal driver while noting
that the notches in the rotating single seal line
up with the seal driver pins, figure 33.
5. Install the single seal and driver assembly.
Slide single seal assembly over the stub shaft
and against the stationary seal.
6. Install impeller and impeller key, if it is not
already in the stub shaft figure 35. Note driving
pins in impeller hub will go into the large slots
in the front of the single seal driver. Replace
the impeller nut gasket and impeller nut and
torque to the correct value.
7. Replace the cover and check that the cover
o-ring is in place and not damaged. Replace the
cover nuts and torque to the proper values.
Running the pump with foreign objects in the
pump or having the impeller making contact
with either the cover or the casing will result in
serious damage if not completely destroying the
pump. If the shaft turns freely and the impeller
is not rubbing either the casing or the cover, re-
place the shaft guard and the pump is ready to
be reconnected to the piping system.
Note: Always turn the stub shaft by hand
before start up making sure nothing is rub-
bing inside the motor, such as foreign objects
or the impeller touching either the back in-
side of the casing or the cover. Also never
run this pump dry. Seals will heat up in-
stantly at operating RPMs, score and may no
longer seal when damaged.
Figure 33
Figure 35
Figure 34
LF & LM SERIES PUMPS
Figure 36