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1) No power to pressure switch due to blown fuses,
open switches or loose connections.
2) Pump pressure switch not closed.
b) Pump fails to deliver water:
1) Pump not completely primed.
2) Suction lift is too great.
3) Foot valve is either not submerged, buried in the mud
or plugged.
c) Pump loses prime:
1) Air leaks in suction line.
2) Well draws down too far.
3) Faulty foot valve.
5
Item # Item Description Where Used Contents
305584001 Case Kit All RJS-PREM Models 9
305584002 Seal Plate Kit All RJS-PREM Models 2
305584003 Nozzle/Venturi Kit RJS-50-PREM 3, 7, & 8
305584004 Nozzle/Venturi Kit RJS-75-PREM 3, 7, & 8
305584005 Nozzle/Venturi Kit RJS-100-PREM 3, 7, & 8
305584006 Overhaul Kit RJS-50-PREM 3, 4, 5, 6, 7, & 8
305584007 Overhaul Kit RJS-75-PREM 3, 4, 5, 6, 7, & 8
305584008 Overhaul Kit RJS-100-PREM 3, 4, 5, 6, 7, & 8
305584009 Impeller/Diffuser Kit RJS-50-PREM 3, 5, & 6
305584010 Impeller/Diffuser Kit RJS-75-PREM 3, 5, & 6
305584011 Impeller/Diffuser Kit RJS-100-PREM 3, 5, & 6
305584012 Shaft Seal Kit All RJS-PREM Models 3 & 4
305584013 Gasket/Hardware Kit All RJS-PREM Models 3, 10, 11, & 12
305584014 Pressure Switch Kit All RJS-PREM Models 1
d) Pump delivers water but not at rated capacity:
1) Leaks in suction or discharge line.
2) Foot valve, suction line, impeller or nozzle are
partially plugged.
3) Suction lift is greater than recommended.
4) Improper impeller rotation or low speed.
5) Venturi or diffuser is plugged.
6) Motor is wired for improper voltage.
7) Motor does not come off starting windings (improper motor
switch adjustment).
e) Pump starts and stops too often:
1) Faulty air volume control.
2) Air leaks in tank above the water level.
3) Incorrect setting on pressure switch.
4) Tank is water logged or too small for application.
1
12
11
11
11
11
10
2 3
4
5
6
7
8
9
Replacement Parts
106905101_RJS-Prem_Series_OM_05-15.indd 5 6/3/15 7:57 AM
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