Xylem FloJet 3426 Series User manual

“TRIPLEX DIAPHRAGM”
3426 / 3526 / 3626 SERIES
AUTOMATIC WATER SYSTEM PUMP
Pump Height Length Width Weight
Series inches (mm) inches (mm) inches (mm) Lb (Kg)
3X26XXX 4.75 (121) 9.00 (229) 6.00 (152) 3.50 (1.59)
MODEL* VOLTS AMP DRAW FLOW PRESSURE SWITCH BYPASS
@10 psi (0.7 bar)
GPM (LPM)
Max psi (bar)
03526144
12V dc
4.4
2.9 (11)
50 (3.4)
Yes
R3626344
24V dc
2.2
2.9 (11)
40 (2.8)
Yes
R3426144
12V dc
4.4
2.9 (11)
25 (1.7)
Yes
R3426344
24V dc
2.2
2.9 (11)
25 (1.7)
Yes
R3426148
12V dc
3.5
2.0 (8)
25 (1.7)
Yes
R3426348
24V dc
1.7
2.0 (8)
25 (1.7)
Yes
*CE fully suppressed models are identified by a prefix “R” and a CE mark on the label.(i.e. R3626144).
Self Declaration Of Conformance (SDOC) is available upon request.
OPERATION
With pump switch off and battery fully charged, fill water tank, open all faucets, then turn pump switch on. Water will
begin to flow. When the water is free of air, turn faucets off. Remember, you are filling the water heater and the toilet
and shower lines. When all valves are shut-off, pump will stop. Should pump fail to stop, turn switch off and see the

trouble shooting guide. CAUTION - Pump surface will get hot to the touch if operated for extended periods of time
under pressurized conditions.
Black ( - )
Switch
INSTALLATION WIRING
STEP 1
Remove shipping plugs from pump ports. Some water
from factory testing may spill out.
STEP 2
Connect fittings supplied with the pump to the RV’s
plumbing. Use 1/2’ I.D. Flexible hose (preferably braided
or reinforced) to reduce vibration through the plumbing
system as shown on Fig. 1. Use hose clamps on the slip-
on barb hose connectors.
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
Install inlet A and discharge B port connectors. Firmly
push slide clips C forward to lock port connectors in
place.
(+)
Battery
)

STEP 6
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.
STEP 1
Use 14 gauge stranded wire to 20’, 12 gauge to 50’, from
power source.
STEP 2
Use a 10-15 amp rated on-off switch on the (+) positive
(red) motor lead.
STEP 3
Install a 10 amp fuse protection on the positive lead.
Note: To help reduce noise and vibration of the
pump through the system use flexible lines on the
inlet and outlet of the pump as shown above. Be
sure to use lines rated to not collapse under pump
vacuum.
TROUBLESHOOTING
WARNING: BEFORE SERVICING PUMP, TURN OFF PUMP AND DRAIN WATER FROM SYSTEM!!
Failure to Prime - Motor operates, but no pump discharge Pump Fails to Turn Off After All Fixtures Are Closed
•Restricted intake or discharge line • Empty water tank
•Air leak in intake line • Insufficient voltage to pump (low battery)
•Debris in pump • Punctured pump diaphragm (pump leaks)
•Punctured pump diaphragm (pump leaks) • Discharge line leak
•Crack in pump housing Motor falls to turn on
•Loose wiring connection
•Pump circuit has no power
•Blown fuse
•Pressure switch failure
•Defective motor
•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

AUTOMATIC WATER SYSTEM PUMP SERVICE PARTS
KEY#
DESCRIPTION
3426XXX
3526XXX
3626XXX
1
Pressure Switch
2091025
2091050
2091040
2
Pumphead Assembly
20406047A (2.9 gpm)
20406048A (2.0 gpm)
20406045A
20406046A
3
Check Valve Assembly
20407034
20407034
20407034
4
Slide Clips (Pair)
21000407A
21000407A
21000407A
ACCESSORIES
QUICK CONN ECT PORT
SYSTEM
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
STRAIGHT
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
• The above part numbers are packaged with 2 fittings per bag.
STRAINERS Pump Series Strainer Number Inlet Outlet Screen
3X26XXX 1740012 1/2 Barb Quad Port 40 Mesh
1740002 1/2 Barb 1/2 Barb 40 Mesh
17400041/2 M Qest 1/2 M Qest40 Mesh 1740014 1/2 M
Qest Quad Port 40 Mesh
Winterizing
Sanitizing
1
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2
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Allowing water to freeze in the system may result in damage to
the pump and plumbing system.
Non-Toxic antifreeze for potable water may be used with Flojet
pumps. Follow manufacturers recom menda tions.
Refer to coach or equipment manufacturers instructions for
their specific winterizing and drainage procedures.
Do not use automotive antifreeze to winterize potable
water systems. These solutions are highly toxic and may
cause serious injury or death if ingested.
1. Drain the water tank. Open tank drain valve and
plumbing drain valves if applicable. You may use the
pump to drain the tank by opening all the faucets in the
system. Allow the pump to operate until the tank is
empty. Do not operate the pump more than 15 minutes
continuously.
2. Open all faucets and flush the toilet to purge all the
water from the pump and the plumbing system. Run
the pump until no water is coming through the faucets.
Turn power to the pump off. Be sure that all the water
from the drain lines are drained.
3. Remove quick connect inlet and outlet fittings from the
pump and turn the pump on to pump out remaining
water from the pump head. Be sure to have a catch
pan or a rag under the pump to prevent water from
spilling on to the RV. Turn the pump off once the
plumbing is empty. Leave the fittings disconnected
from the pump until the system is ready to be used
again. Make a note on your tank filler that the plumbing
is not connected.
4. Be sure that all faucets are left open to protect against
damage to the plumbing.
Portable water systems require periodic maintenance to
deliver a consistent flow of fresh water. Depending on
use and the environment the system is subject to,
sanitizing is recommended prior to storing and before
using the water system after a period of storage.
Systems with new components, or ones that have been
subjected to contamination, should also be disinfected as
follows:
NOTE: The sanitizing procedure is in conformance with
the approved procedures of RVIA ANSI A119.2 and the
US Public Health Service.
Use of the following methods to determine the amount of
common household bleach needed to sanitize the
tank.
A) Multiply “gallons of tank capacity” by 0.13; the result
is the ounces of bleach needed to sanitize the tank.
1. B) Multiply “Liters of tank capacity” by 1.0; the result is
the milliliters of bleach needed to sanitize the tank.
2. Mix into solution the proper amount of bleach within a
container of water
3. Pour the solution (water/bleach) into the tank and fill
the tank with potable water.
4. Open ALL faucets (hot and cold) allowing the water to
run until the distinct odor of chlorine is detected.
5. The standard solution must have four (4) hours of
contact time to disinfect completely. Doubling the
solution concentration allows for contact time of one
(1) hour.
6. When the contact time is completed, drain the tank.
Refill with potable water and purge the plumbing of all
sanitizing solution.
WARRANTY
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 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
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
package with an explanation regarding the reason for return as
well as the authoriz ation number. Include your name, address
and phone number.

SYSTEM CARE AND MAINTENANCE
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.
U.S.A. UNITED KINGDOM JAPAN GERMANY ITALY
Flojet Flojet NHK Jabsco Company Ltd. Jabsco GmbH Jabsco Marine Italia
17942 Cowan Avenue Bingley Road, Hoddesdon 3-21-10, Shin-Yokohama Oststrasse 28 Via Tommaseo, 6
Irvine, CA 92614 Hertfordshire EN11 OBU Kohoku-Ku, Yokohama, 222 22840 Norderstedt 20059 Vimercate, Milano
Phone: [phone] Tel: [phone] Tel: [phone] Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone]
Jabsco is a trademark of Xylem Inc. or one of its subsidiaries.
© 2014 Xylem, Inc. 81000-384 Rev. G 05/2014