TROUBLESHOOTING
PULSATING FLOW– PUMP CYCLES ON AND OFF
Check lines for kinks.
Plumbing lines or fittings may be too small.
Clean faucets and filters.
Check fitting tightness for air leaks.
FAILURE TO PRIME BUT MOTOR OPERATES - NO PUMP DISCHARGE
Restricted intake or discharge line.
Air leak in intake line.
Punctured pump diaphragm.
Initial amp supply is not enough to sufficiently start the motor.
Debris clogged in the valves.
Crack in pump housing.
MOTOR FAILS TO TURN ON
Loose or improper wiring.
Pump circuit has no power.
Blown fuse or thermal protection tripped.
Failed pressure switch.
Defective motor.
PUMP FAILS TO TURN OFF AFTER ALL FIXTURES ARE CLOSED
Punctured diaphragm.
Discharge line leak.
Defective pressure switch.
Insufficient voltage.
Clogged valves in pump head.
LOW FLOW AND PRESSURE
Air leak at pump intake.
Accumulation of debris inside pump or plumbing.
Worn pump bearing (possibly accompanied by loud noise).
Punctured diaphragm.
Defective motor.
NOISY
Check if the mounting feet are compressed too tightly.
Is the mounting surface flexible? If so, it may be adding noise.
Check for loose head/screws.
If the pump is plumbed with rigid pipe, then it may transmit noise more easily.
CAUTION
Please do follow the instruction manual to install the product. Any action outside what is
recommended in this manual may bring damage to the pump. Any inappropriate installation
or operation that causes the pump damage is not covered by warranty.
page
4
51 Series DC Washdown Pump Kit
5.0/5.5GPM 70PSI
Installation Manual
Our heavy-duty washdown kit. The best choice for cleaning boats, fish boxes, anchor wells,
dinghies, and other similar applications. This pump boasts a huge capacity and has an on-demand
switch, so the pump automatically turns on when you squeeze the spray gun handle. With 70 PSI
cutoff, this has the pressure to get rid of stubborn debris. Suitable for fresh and saltwater
applications.
FEATURE&BENEFIT
5 Independent chambers
Self-Priming up to 1.83 m/6 feet
Spray gun range 10 m/32.81 feet
The best choice for cleaning boats, fish boxes,
anchor wells, dinghies, and other similar applications
STANDARDCONFIGURATIONS
Open Flow
Control
Voltage
Model
Type
(GPM/LPM)
SFWP1-050-070-51 NEW
12V
5.0 / 18.9
Switch
SFWP1-055-070-51 NEW
12V
5.5 / 20.0
Switch
SFWP2-050-070-51 NEW
24V
5.0 / 18.9
Switch
SFWP2-055-070-51 NEW
24V
5.5 / 20.0
Switch
page
Run dry capability
Continuous duty
Anticorrosive stoving varnish coated motor
Shut-off
Max
Wire
Pressure Valves Diaphragm
Ports
Draw
Connections
(PSI/BAR)
17.0
70 / 4.8 EPDM Santoprene
1/2"-14MNPT
2-Pin/Leads
17.0
70 / 4.8 EPDM Santoprene 1/2"-14MNPT
2-Pin/Leads
10.0
70 / 4.8 EPDM Santoprene 1/2"-14MNPT
2-Pin/Leads
10.0
70 / 4.8 EPDM Santoprene 1/2"-14MNPT
2-Pin/Leads
1
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