ITT Flojet 4405 Series User manual

Four chamber diaphragm design; Self-priming
up to 6 ft. suction lift; Pump able to run dry
Note: The built-in bypass valve eliminates the need
for an accumulator tank. Do not install in a
system with an accumulator tank. The tank
will interfere with the internal bypass valve.
Pump Series Dimensions - Inches (mm) Weight
Height Width Length lb. (kg)
(Available on 12 & 24V d.c. Models) 4405-XXX 3.75 (95) 6.3 (160) 8.2 (208)
3.9 (1.8)
AMP DRAW
FLOW
PRESSURE SWITCH
MODEL*
VOLTS
@ 10 psi (0.7 bar)
GPM (l/min)
MAX psi (bar)
4405-143
12V dc
3.9
3.3 (12.5)
35 (2.4)
4405-343
24V dc
2.0
3.3 (12.5)
35 (2.4)
4405-443
32V dc
1.3
3.3 (12.5)
35 (2.4)
* CE fully suppressed models are identified by a prefix “R” and a CE mark on the label. (i.e. R4405-343).
Self Declaration Of Conformance (SDOC) is available upon request.

OPERATION
With pump switch off, and battery fully charged, fill water toilet and shower lines. When all valves are shut off tank,
open all faucets then turn pump switch on. Water pump will stop. Should pump fail to stop, turn switch off will begin
to flow, when water is free of air, turn faucets and see the trouble shooting guide.
off, remember you are filling the water heater and the
INSTALLATION
STEP I
Remove shipping plugs from Quad pump ports. Some
water from factory testing may spill out.
STEP 2
Install inlet A and discharge B port connectors. Firmly
push slide clips C forward to lock port connectors in
place.
STEP 3
Slide rubber mounts fully into 4 mounting tracks.
STEP 4
Mount pump vertically, with pump head down or
horizontally in an accessible location. If mounting
vertically, motor up, attach motor mounts first then pump
head mounts, while supporting weight of pump.
STEP 5
Use 1/2” I.D. flexible hose (preferably braided or
reinforced). Use hose clamps on the slip-on barb hose
connectors.
STEP 6
Install a 3/8” I.D. hose for feed lines. Use high pressure
hose on all city water lines.
STEP 7
Install a Flojet strainer in an accessible location (for
inspection and cleaning) between the tank and pump
inlet. This strainer or equivalent is required for pump
warranty to be valid.
NOTE: Do not use with an accumulator tank.

WIRING
STEP I STEP 3
Use 14 gauge stranded wire to 20’, 12 gauge to 50’, Install 10-15 amp fuse protection on the positive lead for from
power source. the -143 model, use a 7 amp fuse for the -343 and a 5
STEP 2 amp fuse for -443 model.
Use a 10-15 amp rated on-off switch on the (+) positive (red)
motor lead.
TROUBLESHOOTING
WARNING: BEFORE SERVICING PUMP, TURN OFF PUMP AND DRAIN WATER FROM SYSTEM!!
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 circuit has no power
•Blown fuse
•Pressure switch failure
•Defective motor
Pump Fails to Turn Off After All Fixtures Are Closed
•Empty water tank
•Insufficient 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
Pulsating Flow
• Restricted pump delivery. Check discharge lines, fittings and valves
for clogging or undersizing
Quite often 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.
DISASSEMBLE
Upper Housing
1. Remove switch (9). Disconnect switch wires.
Upper Housing
2. Loosen but donot remove four pump headscrews andcarefully
remove upper housing assembly (1)
3. Inspect check valve (2) for debris
4. Reassemble new upper housing (1)
Check Valve Assembly
Follow steps 2 and 3
3. Replace check valve (2)
4. Reassemble upper housing (1)
Lower Housing, Diaphragm, Motor
Follow step 2, then slide rubber foot from mounting track.
3. Rotate lower housing (4) so mounting notch opening on
lowerhousing exposes set screw which holds bearing
housing to shaft.
4. Loosen this set screw by inserting wrench 1/8” Allen
wrenchinto mounting notch opening. Then, slide lower
housing (4) off motor shaft.
Diaphragm Cont’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
REASSEMBLE
Motor
1. Reassemble lower housing assembly (4) to motor. (Follow
steps 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 alignedinto hex holes inouter
pistons (4).
•Outer pistons must be aligned with alignment slots on
camassembly making sure screw holes align in cam assembly,
otherwise diaphragm will leak.
3. Tighten cam piston screws partially, center piston
indiaphragm, 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
bepositioned 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) and slide clips (8)
7. Properly seat O-Ring in check valve assembly (2) and checkif
ferrules and screen are 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
motorby 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
takecare not to cross thread or strip out threads in housing.
2. Reconnect wires.
AUTOMATIC WATER SYSTEM PUMP SERVICE PARTS
MODEL#
KEY# DESCRIPTION
4405-143
4405-343
4405-443
0 Service Kit*
20409-043
20409-043
20409-043
1 Upper Housing With Clips
20404-002
20404-002
20404-002
2 Check Valve Assembly
20407-030
20407-030
20407-030
3 Diaphragm Assembly (includes screws)
20403-040
20403-040
20403-040
4 Lower Housing Assembly
20419-001
20419-001
20419-001
5 Motors
2009-073A
2019-023A
2049-025A
Motors CE Models
R2009-073A
R2019-023A
—
6 Ports - 1/2 Barb (pair)
20381-002
20381-002
20381-002
Ports - 1/2 Qest (pair)
.20381-000
20381-000
20381-000
Ports - 3/4 Barb (pair)
20381-006
20381-006
20381-006
7 Pump Head Assembly
20406-003A
20406-003A
20406-003A
8 Side Clips (pair)
20408-000
20408-000
20408-000
9 Pressure Switch Assembly
02090-104
02090-104
02090-104
*Service Kit includes #2, #3, #8 and drive cam assembly.
ACCESSORIES QUICK CONNECT PORT SYSTEM
The above part numbers are packaged with 2 fittings per bag.

STRAINERS
Pump Series Strainer Number Inlet Outlet Screen
4405-XXX
1740-012
1/2 Barb
Quad Port
40 Mesh
1740-002
1/2 Barb
1/2 Barb
40 Mesh
1740-004
1/2 M Qest
1/2 M Qest
40 Mesh
1740-014
1/2 M Qest
Quad Port
40 Mesh
WARRANTY
RETURN PROCEDURE
FLOJET warrants this product to be free of defects in material
and/or workmanship for a period of two years after purchase by the
customer from FLOJET. During this two year warranty period,
FLOJET will at its option, at no charge to the customer, repair or
replace this product if found defective in material or workmanship,
with a new or reconditioned product, but not to include costs of
removal or installation.
This is only an overview of our limited warranty. If you would like a
copy of our warranty, please call or write FLOJET.
Prior to returning any product to FLOJET, call customer service for
an authorization number. This number must be written on the
outside of the shipping package. Place a note inside the package
with an explanation regarding the reason for return as well as the
authorization number. Include your name, address and phone
number.
U.S.A.
Flojet
20 Icon
Foothill Ranch, CA 92610-3000
Tel: [phone]
Fax: [phone]
UNITED KINGDOM
Jabsco/Flojet
Bingley Road, Hoddesdon
Hertfordshire EN11 OBU
Tel: [phone]
Fax: [phone]
CANADA
Fluid Products Canada
55 Royal Road
Guelph, Ontario N1H 1T1
Tel: [phone]
Fax: [phone]
JAPAN
NHK Jabsco Company Ltd. 3-
21-10, Shin-Yokohama
Kohoku-Ku, Yokohama, 222
Tel: [phone]
Fax: [phone]
GERMANY
Jabsco GmbH
Oststrasse 28
22844 Norderstedt
Tel: [phone]
Fax: [phone]-
11
© Copyright 2001, ITT Industries
Printed in U.S.A.
All Rights Reserved
Form: 81000-224
11/01