FLOJET 3426 series User Manual

FLOJET 3426 series User Manual

Triplex diaphragm automatic water system pump

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FEATURES

• Self–Priming
• Dry Running
• Soft Noise Absorbing Mounts
• Snap–in Port Fittings
• Built-in Bypass : Less Pulsation
• Reduces need for accumulator tank
• Corrosion Resistant Materials
• Meets ISO 8846 (Ignition protection)

SPECIFICATIONS

Motor: Permanent Magnet, Ball Bearing
Totally Enclosed. CE Models are
fully suppressed.
Pump: Three chamber diaphragm design
Self-priming up to 9 feet suction lift;
Pump able to run dry without damage
MODEL*
VOLTS
03526144
12V dc
R3626344
24V dc
R3426144
12V dc
R3426344
24V dc
R3426148
12V dc
R3426348
24V dc
*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.

DIMENSIONAL DRAWING

4.75"
(121 mm)
Pump
Series
3X26XXX
AMP DRAW
@10 psi (0.7 bar)
GPM (LPM)
4.4
2.2
4.4
2.2
3.5
1.7
3.18"
(80 mm)
4.24"
(108 mm)
"Triplex Diaphragm"
3426 / 3526 / 3626 Series
Automatic Water System Pump
Dimensions English (SI)
Height
Length
inches (mm)
inches (mm)
4.75 (121)
9.00 (229)
FLOW
PRESSURE SWITCH
Max psi (bar)
2.9 (11)
50 (3.4)
2.9 (11)
40 (2.8)
2.9 (11)
25 (1.7)
2.9 (11)
25 (1.7)
2.0 (8)
25 (1.7)
2.0 (8)
25 (1.7)
(229 mm)
(80 mm)
Width
inches (mm)
6.00 (152)
BYPASS
Yes
Yes
Yes
Yes
Yes
Yes
9.04"
3.12"
2.25"
(65 mm)
Weight
Lb (Kg)
3.50 (1.59)

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Questions and answers

Kevin Marsh
June 3, 2025

Hi I have a flojet 3426-500 When first switched on the pump is fine and if the taps are closed then opened within a couple of minutes then the pump restarts and all is good,but if the taps are closed any longer I have to switch the pump off and on at the caravan control panel then it works fine again until the taps are off for more than a couple of minutes. Please help this is driving me insane.

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Summary of Contents for FLOJET 3426 series

  • Page 1 “Triplex Diaphragm” 3426 / 3526 / 3626 Series Automatic Water System Pump FEATURES • Self–Priming • Dry Running • Soft Noise Absorbing Mounts • Snap–in Port Fittings • Built-in Bypass : Less Pulsation • Reduces need for accumulator tank • Corrosion Resistant Materials •...
  • Page 2 STEP 6 Note: To help reduce noise and vibration of the pump Install a Flojet strainer in an accessible location (for through the system use flexible lines on the inlet and inspection and cleaning) between the tank and pump outlet of the pump as shown above.
  • Page 3 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 •...
  • Page 4 FLOJET. During this two warranty period, outside of the shipping package. Place a note inside the FLOJET will at its option, at no charge to the customer, repair or package with an explanation regarding the reason for return as replace this product if found defective in material or well as the authorization number.

This manual is also suitable for:

3526 series3626 series

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