Shurflo 5902 Installation Manual
Model 5902 Extreme Series Pump/Accumulator Combination
INSTALLATION AND OPERATION MANUAL
The most advanced system available. This fully-automatic potable and raw water system delivers smooth,
consistent flow at all ranges of operation, while drawing low current. The balanced diaphragm design
incorporates two precision ball bearings for long life. SHURflo pumps are 100% tested before leaving the
factory.
GENERAL SAFETY PRECAUTIONS
To prevent possible serious or fatal injury.
Do not exceed 50 PSI [3.4 bar] working pressure
on the tank.
MOUNTING
• All tanks should be securely mounted horizontally to a solid foundation with the pre-charge valve “out” for maintenance and
convenience. Pump can be mounted on top of tank or beside it.
• The unit should be located in an area that is dry and provides adequate ventilation. If mounted with in an enclosure, a provision to cool
the motor may be necessary.
• System is not rated for below waterline installation. The strainer and pump must be mounted above the outside water line.
• The pump is capable of a 6 ft. [2M] vertical prime.
PLUMBING:
• SHURflo recommends that the pump inlet and outlet ports be plumbed with at least 1 ft. [.3M] of flexible tubing. Inlet tubing
1/2” I.D. min [mm] from the tank to the pump should be rated for vacuum. Standard garden hose is not suitable as inlet tubing
will collapse under vacuum, reducing water flow and possibly damaging the pump. The system outlet port should not be
connected to rigid (plastic) pipe. Normal oscillation of the system may transmit through rigid plumbing causing noise and
possibly loosen or crack components.
• Avoid any sharp radius in tubing that may kink over time. Route tubing away from heat (exhaust manifolds etc.) and fasten
securely. See your tubing manufacturer for recommendations.
• Always use high quality non-corrosive fittings, valves and hardware to assure long-term reliability.
• The through hull fitting must have a sea-cock valve to shut-off in case of an emergency.
• Properly seal all pipe threads before the strainer to prevent unforeseen leaks, Never use Teflon tape or sealing compounds
on SHURflo fittings. Sealant may enter the pump causing a failure not covered under warranty.
• If fuel vapor is detected, never operate the engine
or electrical equipment until the source is located
and/or properly vented.
TYPICAL WASHDOWN INSTALLATION:
TYPICAL POTABLE WATER INSTALLATION:
spray nozzle or
water valve (optional)
shurflo
254 series
strainer
inlet
6 FT. max [2.7 m]
vertical lift from
outside water level
to pump inlet port
use flexible high pressure tubing
from thru-hull fitting, strainer,
and pump. tubing should be rated
for below water line use.
sea-cock
valve
through
hull fitting
911-670 Rev K 12/08 ECO#:16135 Page 1 of 4
FITTINGS INTALLATION INSTRUCTIONS
SHURflo quick connect fittings provide easy installation and removal if required. The fittings are designed with dual o-rings,
creating a seal when snapped into place.
Step #3:
Pump clip original stage.
Insert strainer or fitting into quick
connect port, push all the way until
stops.
Step #1:
Place your thumb at the edge of
the clip as shown.
Step #2:
Using your thumb, pry up edge of
lock clip over lock tab. (as shown)
STRAINER
Installation of a 40-mesh minimum strainer such as SHURflo series 254 (included with system) is necessary to prevent debris
entering the pump. System failure due to debris is not covered by SHURflo warranty.
Step #4:
Place your thumb on top of the
clip as shown.
Step #5:
Snap lock clip over fitting and lock.
Pull fitting to make sure is locked in.
to place.
• The strainer MUST be mounted on the inlet side of the pump. The directional flow for the water inlet is marked with an arrow on the
pump head and on the strainer.
• Mount the strainer where it can be inspected and cleaned easily. The strainer can be mounted directly on the pump inlet port or it can
also be mounted away from the pump by using the bracket and fittings supplied (see figure below).
• System is not rated for below waterline installation. The strainer and pump must be mounted above the outside water line.
Raw Water Strainers Available (Sold Separately)
1
253-400-01
1 1/4” Strainer
2
3
253-320-01
1” Strainer
4
253-220-01
3/4” Strainer
253-120-01
1/2” Strainer
5
SERVICE KITS
# Component Part Kit #:
1 Pressure Switch 94-069-00
2 Upper Housing 94-670-02
3 Valve Assembly 94-030-01
4 Drive Assembly 94-030-02
5 Motor 12V DC 77-007-17
5 Motor 24V DC 77-009-17
5 Motor 32V DC 77-010-17
* Included with Aftermarket Extreme Pro Blaster pump kits.
FITTING KITS (Sold Separately)
Elbow
Adapter
94-689-00
911-670 Rev K Page 2 of 4
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