FLOJET 4325 Series Manual de início rápido - Página 3
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TROUBLESHOOTING
Quite oiten when a pump is worn or defective the one failed component has overburdened others. To avoid frequent aggravating
repairs, Flojet offers service kit assemblies making repairs as quick and easy as possible.
Failure to Prime - Motor operates, but no pump discharge
. Restricted intake or discharge line
. Air leak in intake line
. Debris in pump
. Punctured pump diaphragm (pump leaks)
. Crack in pump housing
Motor falls to turn on
. Loose wiring connection
. Pump ckcuit has no power
. Blown Juse
. Pressure switch failure
. Defective motor
Pulsating Flow - Pump cycles on and off
. Restricted pump delivery. Check discharge lines, fittings and
DISASSEiIIBLE
Pressure Switch
1. Remove switch (9). Disconnect switch wjres.
Upper Housing
2. Loosen but do not remove four pump head screws and
carefully remove upper housing assembly (1)
3 Inspect check valve (2) for debris
4. Reassemble new upper housing (1)
Check Valve Assembly
Follow step 2
3. Replace check valve (2)
4. Reassemble upper housing (1)
Lower Housing, Diaphragm, Motor
Follow step 2
3. Rotate lower housing (4) so mounting notch opening on lower
housing exposes set screw which holds bearing housing to
shaft.
4. Loosen this set screw by inserting wrench 1/8" Allen wrench
intg mounting notch opening. Then, slide lower housing (4)off
motor shaft.
Diaphragm Conl'd
5. Loosen four cam piston screws with Phillips head screw
driver and pull apart cam from inner pistons. (Pistons should
always be replaced when a new diaphragm is installed.)
Motor Cont'd
5. Replace Motor
valves for clogging or undersizing.
Pump Falls to Turn Oft After All Fixtures Are Closed
. Empty water tank
. Insufiicient voltage to pump (low battery)
. Punctured pump diaphragm (pump leaks)
. Discharge line leak
. Defective pressure switch
Low Flow and Pressure
. Air leak at pump intake
. Accumulation of debris inside pump and plumbing
. Worn pump bearing (excessive noise)
. Punctured pump diaphragm (pump leaks)
. Defective motor
REASSEMBLE
Motor
1. Reassemble lower housing assembly (4) to motor (Follow
steos 4 to 10.)
Diaphragm
2. Lower housing is assembled with:
. Flat side of diaphragm and outer pistons facing motor
. Hex stem of inner pistons must be aligned into hex holes in
outer plstons {4).
. Outer pistons must be aligned with alignment slots on cam
assembly making sum screw holes align in cam assembly,
otherwise diaphragm will leak.
3. Tighten cam piston screws partially, center piston in
diaphragm, then tighten screws securely (18 in. lbs. torque)
Lower Housing
4. Reassemble lower housing assembly (4)to motor.
5. Retighten set screw securely. Set screw head must be
positioned facing motor covering seam (indentation).
{Positioning of this screw is critical to avoid misalignment and
subsequent diaphragm damage.)
Upper Housing, Check Valve
6. Reassemble upper housing (1)
7. Properly seat O-Ring in check valve assembly (2) and check
if fe rules and screen a. in place on upper housing (1)
8. Install check valve (2) into upper housing (1) and push in.
9. Assemble on to lower housing (4), align 4 screws on to motor
by rotating lower housing (4) if necessary to align feet
10. Tighten screws evenly to 30 in. lbs. torque.
Pressure Switch
'1
. Place switch against front of pump (9), insert screws and take
care not to cross thread or strip out threads in housing.
2. Reconnect wires.
@ Includes iiems 1 thru 4