Maintenance
INOXPA S.A.U.
·
01.030.30.05EN · (0) 2021/01
17
8.7.1. Pump and single mechanical seal
Disassembly
1. Remove the clamping ring (15) and disassemble the pump
casing (01).
2. Check the condition of the O-ring (80) on the pump casing
and replace if damaged.
3. Remove the screws (50) and the lantern protections (47).
4. Place an open-end wrench on the flat sides of the shaft (05)
to prevent it from rotating.
5. Remove the impeller nut (45) and the O-ring (80A).
6. Pull out the impeller (02). If necessary, hit it with a dead blow
using a plastic mallet to disengage the cone.
7. Remove the rotating part of the seal (08) from the rear side
of the impeller (02).
8. Manually, remove the stationary part of the seal (08) which
is located in the pump cover (03).
9. If the thrust washer and the seal spring need to be replaced,
loosen the allen screws (51A) that secure the pump cover
(03) and take it off. The loosen the allen screws (51) and
remove the seal cover (09).
10. Check the spring and the thrust washer on the mechanical
seal (08) and replace if necessary.
Assembly
1. Place the thrust washer of the mechanical seal (08) on the
pump cover (03). Make sure that the four tabs centring the
spring are facing outward.
2. Fit the spring on the thrust washer within the centring tabs.
Place the seal cover (09) on the assembly and move it until
the seal washer thrust tabs match the slots on the cover
(09). Secure it with the allen screws (51).
0
1
.0
3
0
.3
2
.0
0
1
2
0
1
.0
3
0
.3
2
.0
0
1
3
0
1
.0
3
0
.3
2
.0
0
1
4
0
1
.0
3
0
.3
2
.0
0
1
5
