Shurflo 8050-305-226, 8050-305-526 Installation Manual

UTILITY PUMP INSTALLATION INSTRUCTIONS

WARNING

Explosions hazard. DO NOT PUMP
FLAMMABLE LIQUIDS WITH THIS UNIT.

Never operate the pump in an explosive
environment. Arcing from the motor brushes,
switch or excessive heat from an improperly
cycle motor may cause an explosion.

FEATURES:
Suitable for Pumping: Engine oil, transmission fluids, anti-freeze solutions and low viscosity
gear lubes
Dry Run Capabilities: Yes
Pump Body: Polypropylene
Diaphragm: Geolast, oil resistant
Valves: Buna-n
Motor: 12V DC with internal thermal protector
Battery Leads: 8 feet [ 2.4m ] with alligator clips (Premium Only)
Duty Cycle: Intermittent Duty
Open Flow: 1.5 GPM [5.8 L]
Current Draw: 4.5 Amps Max.
Ports: 3/8” Female NPT
Control: Internal By-Pass 35 PSI

MOUNTING:

• Consider a location that allows for easy access if maintenance is required. The pump should not be
located in an area less than one cubic foot unless adequate ventillation is provided. Excessive heat
may trigger the integral thermal breaker and interrupt operation. When the motor temperature drops,
the breaker will automatically reset and the pump will start.

• The pump may be mounted in any position. If mounted the vertically pump head should be in the
down position so that in the unlikely event of a leak, fluid will not enter the motor.

• The pump can be positioned above the liquid tank if needed, as it is capable of 6ft [1.82M] vertical
prime (with water).

• Use #8 hardware to fasten the pump. Choose a solid surface that will not amplify pump operation.
The mounting feet are intended to isolate the pump from the mounting surface; over-tightening,
flattering, or use of oversized screws will reduce the ability to isolate noise and vibration.

PLUMBING:

• SHURflo recommeds 3/8” [9.5mm] or 1/2” [13mm] I.D. flexible high pressure tubing to both ports.
Ideally, the pump ports/strainer should not be connected directly to rigid pipe. The pump’s normal
oscillation may trasmit through rigid plumbing causing noise, and possibly loosening or cracking
components.

• Installation of a SHURflo 255 series strainer on the inlet side is recommeded to prevent foreign
debris from entering the pump. Failure due to debris is not covered under the SHURflo limited
warranty.

ELECTRICAL:

• The pump should be on a dedicated (individual) circuit, protected by the fuse indicated on the motor
label.

• An “ON/OFF” switch rated at or above 15 amps is recommended. The switch must interrupt current
flow on the positive (+ red) lead. Marine applications should use U/L approved marine duty (ignition
protected) switches and wiring standards.

• The black lead (-) must be connected to a “known ground”. The ground wire must be the same size
(gauge/Mm²) as the positive wire.

• Wire size (gauge/Mm²) is based on the distance from the power source to the pump. The minimum
recommended is # 14 gauge [2.5 Mm²]. Lenghts of 20-50 ft. [6-15M] use # 12 gauge [4 Mm²].

• The total current draw on the circuit must not exceed 15 amps. If the pump is used in conjunction
with other components, overload current protection (fuse or circuit breaker) and wire size must be
for the total amp requirement of all devices on the circuit.

911-714 Rev E 12/08 ECO#: 16135 Page 1 of 2

PREMIUM PUMPS:

WARNING

STRAINERS AVAILABLE:
Number Components Part Number

1 1/2” NPT-F x 1/2” BARB 255-113
2 1/2” NPT-M x 1/2” NPT-F 255-213
3 3/8” NPT-M x 1/2” NPT-M 8-145

Explosions hazard. Motor switch MUST be in
“OFF” position when connecting and
disconnecting alligator clips to battery
terminals and ground. The switch in an “ON”
position can cause an electrical spark which
can result in explosion. Injury or death can
occur.

PART KITS AVAILABLE:
Number Components Parts Kits

1 Motor 11-148-06
2 Drive Assembly 94-385-42
8 Valve Assembly 94-391-12

1

2

3

Use adapter fitting when connecting a 255 strainer (included)

LIMITED WARRANTY

SHURflo warrants Diaphragm Pumps to be free from material and workmanship defects under normal use and
service for a period of one (1) year from the data of manufacture or one (1) year of use with proof of purchase, not
to exceed (2) years in any event. The limited warranty will not apply to pumps that were run dry, misapplied, or are
incompatible with components not manufactured by SHURflo. Pump failure due to debris or chemical incompatibility
is not covered under the terms of this limited warranty. SHURflo will not warrant any pump that is physically
damaged, or altered outside the SHURflo factory. Warranty claims may be resolved by an authorized dealer service
center, or by SHURflo. For complete warranty details, please call your closest SHURflo office.

SHURflo reserves the right to update specifications, prices, or make substitutions.

SHURflo, LLC Headquarters

5900 Katella Avenue
Cypress, California 90630
Phone [phone] Ÿ Toll Free [phone]
Fax [phone]

911-714 Rev E
© 2008 SHURflo, LLC All Rights Reserved

SHURflo, LLC East

52748 Park Six Court
Elkhart, Indiana 46514-5427
Phone [phone] Ÿ Toll Free [phone]
Fax [phone]

SHURflo Europe, Middle East, Africa
Pentair Water Belgium bvba,

Industriepark Wolfstee, Toekomstlaan 30
B-2200 Herentals, Belgium
Phone [phone]Ÿ Fax [phone]

Patent #: 6623245 Page 2 of 2