Page 10 of 24 FLOMAX 8 BZ AL (en)
MOUNTING SEVERE-SERVICE SEAL ASSEMBLY
The MP PUMPS Severe-Service Seal is a precision assembly
requiring care in installation. To insure proper operation it is
necessary to install this seal as follows:
1. Thoroughly clean the seal seat cavity in the pump adapter.
2. Lubricate the seal seat O-Ring with light oil and carefully
install the seat into the seal cavity that is inside the
adapter.
3. Using a soft clean cloth, clean and lubricate both seal faces
with light oil.
NOTE: Any foreign matter between seal faces will cause
leakage and shorten seal life.
4. Complete assembly of seal and pump - see above.
5. Rotate by hand before start up.
MOUNTING IMPELLER
Do not use drive key between drive shaft and impeller sleeve.
The clamp will drive the sleeve. Slide the impeller sleeve onto
the drive shaft. Replace impeller clamp and capscrews, lock-
washers and nuts.
Before tightening clamp adjust clearance between back face
of impeller and adapter allowing from 0.015” (0.381 mm) to
0.020” (0.508 mm) clearance. Tighten impeller clamp to lock
impeller onto drive shaft. This automatically sets face clear-
ance of impeller when housing is mounted.
MOUNTING PUMP HOUSING
Replace gaskets on pump housing and mount housing on
the adapter. Replace two lockwashers and nuts on studs di-
agonally across from each other and tighten. Tum drive shaft
over slowly by hand and listen at outlet opening on housing
for any rubbing of impeller on the housing or wear plate.
The clearance between the impeller and wear plate can be
checked with a feeler gauge. Normal clearance is 0.015” (0.381
mm) to 0.020” (0.508 mm). If clearance exceeds 0.025” (0.635
mm) readjust impeller. If the impeller rubs use an additional
gasket to space impeller.
After clearance has been established, replace lockwashers
and nuts on remaining studs and tighten. If capscrews and
nuts are used to hold housing to mounting base, rep{ace
these and tighten.
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