English; Typical Applications; Design Features - Johnson Pump SPXFLOW F7B-5000 Handbuch

> English
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 wash-
ing.
• Industry and agriculture
The pump can be mounted on the po-
wer take-off of a tractor, road grader etc
for irrigation, washing etc.

Design features

Body:
Impeller:
Shaft:
Seal:
Cam:
Connection:
Clutch:
groove
Pressure and capacity data
See page 26-28.
Service instructions
See parts list pages 7-8, 21-25.
Disassembly
1. Remove endcover and gasket.
2. Pull out the impeller using two screw
drivers or other suitable implements.
6
Bronze
Neoprene or nitrile
(F9B/F95B only
neoprene)
Stainless steel.
The shaft is mounted
with permanently
lubricated double ball
bearings
Mechanical
Full or reduced
See "Type designation",
page 7
Electro-magnetic,
2xA-groove or 1xB-
Supply voltage:
12 V (4 amps) DC
24 V (2 amps) DC
3. Remove the cam and wash away resi-
dual traces of sealing compound on the
cam and inside the pump body.
4. Remove the wear plate.
5. Remove the retaining ring (pos 16) and
washer (F7B/F95B - pos 29) holding
the mechanical seal. F8B/F9B has no
washer.
6. Lubricate the shaft in front of the me-
chanical seal and press down the seal
for easier removal from the shaft.
7. Remove the screws holding the pump
body to the pedestal on F8B/F9B/
F95B (pos 25). Loosen the nut (pos 33)
on F7B. Disassemble the pump body.
8. Remove the ceramic ring.
9. Clean shaft, pump body, cam and end-
cover. Wash away any traces of sealing
compound.
Assembly
1. Moisten the ceramic ring with soapy
water (5% soft soap) and mount it in the
pump body. Protect the sealing surfaces
of the mechanical seal against grease
and damages, as it will affect the seal
function.
2. Fasten the pump body onto the pede-
stal. On F7B with nut (pos 33) and on
F8B/F9B/F95B with screw (pos 25).
3. Moisten the rotating ring with soapy
water and press it in its position on the
shaft.
4. Fit the washer (F7B/F95B - pos 29)
and the retaining ring (pos 16) on the
shaft. F8B/F9B has no washer.
5. Mount the wear plate in the pump body.
6. Apply sealing compound to the cam and
cam screws. Fasten the cam.
7. Lubricate the impeller with JP Impel-
ler Lubricant and fit it wit a rotating
movement in the intended direction of
rotation.
8. Lubricate, with vaseline or the like, the
surfaces of the pump body where the
gasket is to be placed. Fit the gasket
and mount the endcover.
Original instructions