Shurflo 4900 Installation Manual

CAUTION

MOUNTING

RED PUMP WIRE MUST BE CONNECTED

Wire Size for a 10% voltage drop on a 12VDC, 15 Amp Circuit

LIMITED WARRANTY

TROUBLESHOOT

ING & MAINTENANCE

A

+12VDC Powe

r

7564

• Mount pump within 6 feet of tank for best performance.

• Mount pump in a space of two cubic foot for adequate

ventilation.

• The pump may be mounted in any position.

• Choose a solid surface. Do not insulate the baseplate

heat sink. Heat sink must be free and have air
flowing across.

• Do not over-tighten mounting feet.

ELECTRICAL

TO POSITIVE POWER OR CONTROLLER
WILL BE DAMAGED!!!

• The pump should be on an individual circuit, protected by
the specified size fuse or circuit breaker on the label.

• A 15 amp or higher switch is recommended, and must
be on the positive (+ red) lead.

• TEST INCOMING POWER WITH MULTIMETER TO
TEST POLARITY ( RED = + and BLACK = -- ).

• Pump draws 15 milliamps when pump is powered on,
even when the pump is not running.

SHUT OFF POWER TO PUMP WHEN LEAVING COACH .

Length is distance from power source to pump and back to ground

0–20 Ft [0-6M] = 14GA [2.5mm2]
20–50 Ft [6-15M] = 12GA [4mm
50–70 Ft [15-21M] = 10GA [6mm2]
70–100 Ft [21-30M] = 8GA [10mm2]

2

]

Electrical Connection with 10 Amp or 15 Amp Controller

Disconnect wires from current pump and connect to Smart
Sensor Pump. Make sure wires are at least 14GA [2.5mm2].

Electrical Hook -Up with 7Amp Intellitec Controller

Replace 7 Amp controller with 10 Amp or 15 Amp Controller,
or install relay as shown below. The purpose of the relay is to
allow the 7 amp controller to close the circuit on the relay
allowing a higher amp circuit to run the pump. Common name
for the relay is a Bosch 30-Amp automotive-type relay. Turn
off all power before electrical work.

1. Splice 2 red wires into the incoming power line to +12V.

2. Connect one re d wire to the red fused pump wire.

3. Connect one red wire to relay terminal 85.

4. Remove wire from the controller LOAD terminal to the
black (-) pump wire and connect it to relay terminal 87.

5. Make a jumper wire from LOAD to relay terminal 86.

6. Splice ground wire from relay terminal 30 to controller
GND terminal and circuit ground.

7. Leave wire to SW terminal connected to switches.

A

+12VDC

D

E

Relay Installation

B

F

G

B 7-Amp Controller
C - Ground
D To coach switches

C

E 30-Amp Relay
F Wire moved from

‘LOAD’ Terminal

-Black Wire to Pump
G + Red Wire to

(-)

(+)

Pump

PLUMBING

• Installation of a 50 -mesh strainer (SHURflo model 255 or

larger) is required to prevent debris from entering the
pump.

• Use a minimum of ½” [13mm] inner diameter plumbing.

• For noise and vibration reduction we recommend at least

18 in. [.5 M] of ½" [13mm] I.D. flexible high-pressure
tubing to both ports. The pump ports and strainer should
not be connected to plastic or rigid pipe.

• For proper shut-off, remove accumulator in system.

• Reduce restrictive valves and plumbing elbows.

Regularly check all fittings/screws/connections
PUMP WILL NOT START/ BLOWS CIRCUIT

ü Electrical connections, fuse, breaker, main switch, and

ground connection.

ü Is the motor hot? Self-resetting thermal breaker may have

triggered.

WILL NOT PRIME/SPUTTERS (No discharge/Motor runs)

ü Is the strainer clogged with debris?
ü Is there water in the tank, or air in the hot water heater?
ü Is the inlet plumbing sucking in air at connections (vacuum

leak)?

ü Is inlet/outlet plumbing severely restricted or kinked?
PUMP WILL NOT SHUT OFF/RUNS WHEN FAUCET IS
CLOSED

ü Output side plumbing for leaks, and inspect for leaky valves

or toilet.

ü For air trapped in outlet side (water heater) or pump head.
NOISY OR ROUGH OPERATION

ü For plumbing which may have vibrated loos e.
ü Is pump plumbed with rigid pipe?
ü Does the mounting surface amplify noise?
ü For mounting feet that are loose or compressed too tight.
ü For air in system.

Sanitizing: SHURflo recommends sanitizing your system
every year or as needed for maintenance. Follow your
manufacturer’s recommended procedures.
Winterizing: Follow your manufacturer’s recommendations.
Do not allow water to freeze in the pump or strainer.

SHURflo warrants its aftermarket Extreme series RV pump to be free from
material and workmanship defects under normal use and service for a period
of (3) three years from the date of purchase. Pumps installed as original
equipment are warranted for 1 year, and fall under the warranty supplied by
the manufacturer, as outlined in document MS-030-123. In the absence of
proof of purchase the warranty is (3) three years from the date of
manufacture indicated on the motor nameplate. SHURflo is not responsible
nor will it reimburse for labor necessary to remove and reinstall a pump, if

found defective. Contact SHURflo for complete Limited Warranty details.

SHURflo SHURflo East SHURflo Europe, Middle East, Africa

5900 Katella Avenue 52748 Park Six Court Pentair Water Belgium bvba
Cypress, CA 90630 Elkhart, IN 46514-5427 Industriepark Wolfstee, Toekomstlann 30
Phone [phone] Phone [phone] B-2200 Her entals, Belgium
Toll Free [phone] Toll Free [phone] Phone [phone]
Fax [phone] Fax [phone] Fax [phone]

911-696-D Page 2 of 2

Visit our Web Site at http://www.shurflo.com

Shurflo reserves the right to update specifications,

change prices, or make substitutions without notice.

FLOW TECHNOLOGIES GROUP

5900 Katella Ave, Cypress, CA 90630
Phone [phone] • [phone] • Fax (562) 795 -

www.shurflo.com

OPERATION

purge

all

of the

air in your system.

e

M

r

0

4900 Installation & Operation Manual

Typical 4900 Pump Installation

EN

These are generalized instructions. For detailed installation, maintenance and troubleshooting and limited warranty
information, contact SHURflo or visit http://www.shurflo.com.

For smooth, maximized flow and less noise and vibration, we offer these suggestions:

•Use a minimum ½” [13mm] diameter tubing. Eliminate any unnecessary restrictive elbow fittings and valves

•Mount pump on solid surface. Do not over-tighten rubber feet.

•Use flexible high-pressure hose on pump inlet and outlet, such as SHURflo Pump Silencing Kit 94 -591-01.

•The use of accumulators is not recommended with this pump. It is best to remove accumulator from system.

•Use a 50-mesh water strainer [Model # 255].

•Wire Size: 14GA [2.5mm2] minimum, 12GA [4mm2] recommended. See chart on page 2.

•Bleed all air from system.

• Reducing restrictions on the inlet side will allow the pump to run freely, reducing cavitation (starving & noise).

• Reducing restrictions to pump outlet side will minimize backpressure, allowing the pump to run freely.

• Minimum suggested requirement is 2 ft3 [.06M3] of space around pump. Less area around pump can cause

the thermal overload to turn off pump at about 20 minutes of operation. More airflow is better for cooling pump.

• Pump is designed for intermittent duty only.

• Minimum power requirement is 15 AMPS.

• If coach has an Intellitec latching pump controller, see wire diagram on page 2.

• Pump shut-off pressure is 50 PSI [3.4 Bar]. System must be designed to handle 50 PSI [3.4 Bar].

•Pump draws 15 milliamps continuously when pump switch is on, even when pump is not running.

ALWAYS SHUT OFF POWER TO PUMP WHEN LEAVING COACH OR DRIVING.

THIS PUMP IS NOT DESIGNED FOR CONTINUOUS DUTY OR FOR USE AS A REVERSE OSMOSIS (RO) PUMP.
PLEASE CONTACT SHU RFLO, OR VISIT WWW.SHURFLO.COM FOR YOUR INDIVIDUAL NEEDS.

In a high flow application, the pump will function normally. In a low flow application, the pump will sense a build-up in
pressure, send a signal to the motor and slow down, with virtually no cycling and very low noise. When the fixture is
closed, pressure will build up and the pump will shut off. Pump draws 15 milliamps continually when pump switch is on.

Always turn pump off when not in use for long periods of time, or when leaving your coach.

The pump fully breaks in after a few hours on time. The diaphragm and valves better seat themselves and the motor
brushes will make full contact. What this means for you is a little higher flow and lower amp consumption. Make sure you

911-696-D 10/09 ECO #: 16629 Page 1 of 2

READ INSTRUCTIONS ENTIRELY BEFORE INSTALLING THE SMART SENSOR 4.0

EExxttrreemme

IMPORTANT

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SSeerriieess SSmmaarrtt SSeennssoor

Key Installation Suggestions:

• Mounted on a solid surface

• Mounted within 6 feet of tank

• Base feet snug, not overtightened

• Flexible lines on inlet and outlet

• ½” ID plumbing

• Model 255 strainer on inlet

• Minimum 14GA wire feeding pump

• Check valve on water heater inlet

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