/ / FPM AND FSM SERIES
/ / /
16
Fig.
24
Measurement of impeller–pump cover clearance
3. Compare the clearance X with
.
9.7.4
Clearance too large
Rework the stationary bushing if the clearance between the
casing and the impeller is too large.
Grinding down the stationary bushing
1. Remove the stationary bushing from the pump. The position
of the stationary bushing is shown in the "
Section drawing
"
in the "
Order-related documents
" in the enclosed documents.
Fig.
25
Grinding down the stationary bushing
2. Grind the stationery bushing down to the proper dimension.
Note: Grind down the stationary bushing at the highlighted side,
see Fig.
25 "Grinding down the stationary bushing", Page
3. Install the stationary bushing.
4. Measure the clearance again.
9.8
Mounting the pump head
The mounting of the pump depends on the respective size and
model as well as on the respective magnetic coupling (see
“Or-
der-related documents”)
in the enclosed documents.
NOTE
Incorrect elastomers
Pump leakiness.
Ensure that the elastomers are appropriate for the condition
of the pumping medium. Please refer to the
“Order-related
documents”
.
Preparation
Clean all pump parts and check for damage and accuracy of
fit.
If necessary, rework or replace pump parts.
Assemble carefully and using little force in clean conditions.
The seals could be permanently deformed or break in part.
Replace all O-rings.
To reduce friction, wet the O-rings and sliding surface with
water, alcohol or silicon grease.
Clean the sliding surfaces with a cleaning agent, e.g. "OKS
2610 Universal Cleaner". Subsequently, it is recommended
to coat the sliding surfaces with a few drops of oil or a small
amount of grease.
Tip: The joint retaining compound "Euro Lock A64.80," e.g., is suit-
able for gluing in bearings and bushings.
Tip: The screw retaining compound "Euro Lock A24.10," e.g., is suit-
able for gluing in set screws.
Procedure
1. Assemble the magnetic coupling. see
.
Note: When assembling the magnetic coupling, compliance
with the manufacturer's instructions is mandatory (see "Mag-
netic coupling operating manual") in the enclosed documents.
2. Insert the 3 long studs into the casing; ensure they are even-
ly distributed.
Note: The studs are used to guide the casing in the lantern
during the assembly and prevent damage to the magnetic cou-
pling.
3. Carefully push the pump casing towards the lantern.
CAUTION
To stay out of harm's way during the assembly, and do not reach
between the casing and the lantern.
4. Remove the studs that are used for guiding purposes.
5. Firmly tighten the screws and washers
.
6. Mount the impeller, see
Pump size
Clearance [mm]
z
x
Impeller
pump casing
Impeller pump cover
(resulting)
3531/3532
26.7
(1.5)
Table
7
Clearance
Summary of Contents for FPM 3531
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