Design Features; English - Johnson Pump SPX Flow F7B-5001 Manual De Instrucciones

Self-priming, flexible impeller pump of bronze with
electro-magnetic clutch
Typical applications
• Marine
Bilge pump, wash-down for decks and
equipment, emergency engine cooling
pump, emergency fire pump, fish washing.
• Industry and agriculture
The pump can be mounted on the power
take-off of a tractor, road grader etc for ir-
rigation, washing etc.

Design features

Body: Bronze
Impeller: Neoprene, EPDM or nitrile
Shaft: Stainless steel
The shaft is mounted
with permanently lubricated
double ball bearings
Seal: F7B-5001/-50017 - lip seal
alt. mechanical seal
F8B-5001/-50017
- mechanichal seal
Cam: Full or reduced
Connection: See "Type designation", page 6
Clutch: Electro-magnetic,
2xA-groove or 1xB-groove
Supply voltage:
12 V (4 amps) DC
24 V (2 amps) DC
Pressure and capacity data
See page 15.
Service instructions
See parts list pages 16-19.
Disassembly
1. Remove endcover and gasket alt. the oring.
2. Pull out the impeller using two screw drivers
or other suitable implement.
3. Remove the cam and wash away residual
traces of sealing compound on the cam and
inside the pump body. Remove the wear
plate.
Original instructions
4. Remove lip seal alt mech seal. Remove the
o-ring (not possible from this direction on
F7B)
5. Back off the screw (pos 21) and remove the
clutch from the shaft. If necessary, screw a
UNC 5/8" screw into the centre hole of the
clutch in order to press the clutch off the
shaft.
6. Back off the screws (pos 24) and remove
the field coil.
7. Remove the retaining ring (pos 12) for the
bearing assembly.
8. Remove the shaft with ball bearings by
pressing on the shaft end from the impeller
side.
9. Remove the ball bearings/retaining ring and
the spacer and on F7B also the O-ring (pos
27). On F8B do not press the ball bearings
over the sealing surface.
Assembly
1. Mount ball bearings/retaining ring and the
spacer on the shaft and on F7B also the O-
ring. On F8B do not press the ball bearings
over the sealing surface.
2. Press the shaft with ball bearings into the
body and fit the retaining ring (pos 12).
3. Mount the field coil using the screws (pos
24) and tighten with torque of 7±1 Nm. On
F7B also mount the washer (pos 29) on the
body.
4. Mount the clutch on the pump shaft with a
key (pos 15).
5. Mount o-ring (F8B) and lip seal (spring
towards the impeller) alt mechanical seal.
6. Mount the wear plate.
7. Fasten the cam, but before doing so apply
sealing compound to cam and screw in
order to prevent leakage.
8. Lubricate the impeller with JP Impeller lub-
ricant and fit it with a rotating movement in
the intended direction of impeller rotation.
9. Fit the gasket alt. the O-ring before moun-
ting the endcover.
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