15
QIS SERIES-M
03
OPERATION AND MAINTENANCE MANUAL
QIS SERIES
Centrifugal Pump
the stationary face; the static face has a gutter in the middle between both O-rings, do not block
this, and remember that you can use water or dishes soap to lubricate or glue O-rings and gaskets
to the metal elements to ease assembly. Place the stationary face into the backplate seal housing,
the square shape in both parts must be aligned. Push until the seal surface fully seats on the
housing. Figure
K
.
Figure
K
Place and fix the backplate already with the stationary seal installed into the adapter as in step
3b
.
Use torque value to fix the backplate of
6 ft.lb
for all the models. Be carefull not to hit the seal
with the stubshaft end.
4c. Internal rotary seal sub-assembly, single and double mechanical seal.
Assembly the internal
rotary face (
6B
), the rotary seal O-ring (
6I
), internal spring (
6E
) and rotary holder O-ring (
6H
) into the
rotary holder (
6A
). First place the O-ring (
6I
) into the groove on the rotary holder. Then place the
spring inside the rotary holder taking care the spring tip fits the notch in the rotary holder. Insert
the internal rotary face into the rotary holder. The second spring tip must fit the notch in the
internal rotary face, then compress. Finally place the rotary holder O-ring (
6H
) in the groove on
the front of the holder. Figure
L.
Figure
L
7
6K
6C
6J
6H
6A
6E
6I
6B
Gutter
O-ring
6K
O-ring
6J
O-ring
6I
O-ring
6H
AS
S
E
MBL
Y