ITT Industries Flojet 4305-144D User manual

3.25
(82)
3.5
(90) 3.44 (87)
“Quad II Diaphragm”
Models4305-144/4325-504
Automatic Washdown Pump
FEATURES
• Self-Priming
• Dry Running
• Soft, Noise Absorbing Mounts
• Corrosion Resistant Materials
• Meets U.S.C.G. Electric Standards
• Thermally Protected
SPECIFICATIONS
Motor: Permanent Magnet, Ball Bearings at Front &
Rear Endbell. CE Models are fully
suppressed.
Pump: Four chamber positive displacement
diaphragm design; Self-priming up to 6 ft.
suction lift; Pump able to run dry without
damage; Removable port to hose connectors.
With pump intake connected to inlet strainer and supply
tank or through hull fitting and operation switch off, open
outlet valve, then turn pump switch on. Water will begin
to flow, when water is free of air turn valve off. When
valve is shut off pump will stop. Should pump fail to
stop, turn switch off and see the trouble shooting guide.
As a circulation pump, always run full flow with no
restriction. Use 3.5 GPM pump for tanks up to 30
gallons, and use 5.0 GPM pump for tanks up to 50
gallons. Divert excess water, but do not restrict flow.
For portable use we recommend the pump be mounted
on a base (i.e. 3/4” x 8” x 10” board or plywood), add a
length of cable with alligator clips for battery
connection.
OPERATION
Pump Series Dimensions - Inches (mm) Weight
Height Width Length lb. (kg)
4305-144 3.75 (95) 6.3 (160) 8.6 (218) 4.5 (2.1)
4325-504 3.75 (95) 6.3 (160) 9.9 (252) 6.0 (2.8)
AMP DRAW FLOW PRESSURE SWITCH PRESSURE
MODEL* VOLTS @ 10 psi (0.7 bar) GPM (l/min) MAX psi (bar) STRAINER NOZZLE
4305-144D 12V dc 5.0 3.5 (13.5) 40 (2.8) No No
4305-144L 12V dc 5.0 3.5 (13.5) 40 (2.8) Yes Yes
4325-504 12V dc 8.0 5.0 (18.9) 40 (2.8) No No
* CE fully suppressed models are identified by a prefix “R” and a CE mark on the label. (i.e. R4305-144).
Self Declaration Of Conformance (SDOC) is available upon request.
Model 4305-144/4325-504

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 3/4” or 5/8” I.D. flexible hose (preferably braided or
reinforced). Use hose clamps on the slip-on barb hose
connectors.
STEP 6
Install a 40 mesh in line strainer in accessible location
between tank and pump inlet.
INSTALLATION
STEP I
Use 14 gauge stranded wire to 20’, 12 gauge to 50’,
from power source.
STEP 2
Use a 15 amp rated on-off switch on the (+) positive (red)
motor lead.
STEP 3
Install 15 amp fuse protection on the positive lead.
WIRING
(+)Red (+)
Fuse
Switch
Battery
(–)
Black (–)
Flojet
Washdown Pump
Fresh Water
Tank Flojet Inlet
Strainer
Thru Deck
Fitting
Seacock
"Y" Valve
B
A
C

DISASSEMBLE
Upper Housing
1. Remove switch (9). Disconnect switch wires.
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 steps 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
into 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 aligned into hex holes in
outer pistons (4).
• Outer pistons must be aligned with alignment slots on cam
assembly making sure 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 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 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.
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
• Open thermal protector
Pulsating Flow
• Restricted pump delivery. Check discharge lines, fittings and
valves for clogging or undersizing
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
21
4 7 Includes items 1 thru 49 6
3 5
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.

Pump Series Strainer Number Inlet Outlet Screen
STRAINER 4305-144 1740-000 3/4” Barb 3/4” Barb 40 Mesh
STRAINER 4325-504 1740-000 3/4” Barb 3/4” Barb 40 Mesh
PRESSURE NOZZLE Any 20446-000 3/4” GH — —
ACCESSORIES
20381-000
QUAD PORT x
1/2" MALE QEST.
STRAIGHT
20381-002
QUAD PORT x
1/2" HOSE BARB
STRAIGHT
20381-006
QUAD PORT x
3/4" HOSE BARB
STRAIGHT
20381-007
QUAD PORT x
GARDEN HOSE
ADAPTOR
20381-008
QUAD PORT x
1/2" MALE QEST.
90°ELBOW
20381-009
QUAD PORT x
1/2" HOSE BARB
90°ELBOW
20381-010
QUAD PORT x
3/4" HOSE BARB
90°ELBOW
QUICK CONNECT PORT SYSTEM
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]
U.S.A.
Flojet
20 Icon
Foothill Ranch, CA 92610-3000
Tel: [phone]
Fax: [phone]
GERMANY
Jabsco GmbH
Oststrasse 28
22844 Norderstedt
Tel: [phone]
Fax: [phone]
© Copyright 2001, ITT Industries Printed in U.S.A. All Rights Reserved Form: 81000-267 11/01
WASHDOWN PUMP SERVICE PARTS
WARRANTY
FLOJET warrants this product to be free of defects in material
and/or workmanship for a period of one year after purchase by the
customer from FLOJET. During this one year warranty period, FLOJET
will at its option, at no charge to the customer, repair or replace this
product if found defective, with a new or reconditioned product,
but not to include costs of removal or installation. No product will
be accepted for return without a return material authorization num-
ber. All return goods must be shipped with transportation charges
prepaid. This is only a summary of our Limited Warranty. For a
copy of our complete warranty, please request Form No. 100-101.
RETURN PROCEDURE
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 pack-
age with an explanation regarding the reason for return as well
as the authorization number. Include your name, address and
phone number.
MODEL#
KEY# DESCRIPTION 4305-144 4325-504
0 Service Kit* 20409-043 20409-043
1 Upper Housing With Clips 20404-003 20404-003
2 Check Valve Assembly 20407-030 20407-030
3 Diaphragm Assembly (includes screws) 20403-040 20403-040
4 Lower Housing Assembly 20419-002 20419-004
5 Motors 02009-087A 02009-080A
Motors CE Models R2009-087A R2009-080A
6 Ports - Garden Hose (pair) 20381-007 20381-007
Ports - 3/4 Barb (pair) 20381-006 20381-006
7 Pump Head Assembly 20406-002A 20406-015A
8 Side Clips (pair) 20408-000 20408-000
9 Pressure Switch Assembly 02090-118 02090-118
*Service Kit includes #2, #3, #8 and drive cam assembly.
The above part numbers are packaged with 2 fittings per bag.