Johnson Pump SPXFLOW F5B-19 Mode D'emploi page 8

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Temperature
The life of the impeller depends on the tem-
perature of liquid being pumped. Temperatu-
res between +5°C and +55°C give normal
life. Higher or lower temperature will reduce
the life.
Freezing weather
Drain unit by loosening the endcover. Glycol
based anti-freezes can be used but do not
use petroleum based anti-freeze compounds.
Endcover gasket
Use standard gasket. A thicker gasket will
reduce priming ability. A thinner gasket will
cause impeller to bind.
Service instructions
(see page 22-23)
Disassembly
1. Screw off the endcover screws (10) and
remove the endcover (2) and gasket (7).
2. Pull out the impeller (4) using two screw
drivers or other suitable implements.
3. Remove the cam (3) and wash away any
traces of sealing compound on the cam
and inside the body.
4. Remove the wear plate (5).
5. Remove the retaining ring (11) and
washer (18) holding the mechanical seal.
Lubricate the shaft in front of the seal
with vaseline or the like and press down
for easier removal from the shaft.
6. Back off the nut (15) of the motor flange
and pull off the body with mechanical
seal.
7. Remove the stationary ring of the me-
chanical seal (12) from the body. Note:
Take care of the mechanical seal to avoid
damaging the sealing surfaces.
8
Assembly
1. Mount the stationary ring of the mechani-
cal seal on the shaft.
Note! Take care of the mechanical seal to
avoid damaging the sealing surfaces.
2. Mount the body in the motor flange
and lock with the nut.
3. Mount the rotating ring of the mechanical
seal on the shaft, fit new washer and new
retaining ring.
4. Mount the wear plate.
5. Apply sealing compound to the cam and
cam screw in order to prevent leakage.
Do not fasten the cam screw.
6. Lubricate the impeller with vaseline or the
like and fit it with a rotating movement in
the intended direction of pump rotation.
7. Lubricate the sealing surface of the
pump body with vaseline or the like. Fit
the new gasket in its position and fasten
the endcover. Fasten the cam screw.
Waste handling/material recycling
At the products end of life, please dispose
of the product according to applicable law.
Where applicable, please disassemble the
product and recycle the parts material.
Original instructions