Seaflo 33 Series User Manual

An incredible feature list, high quality components, plus amazing performance. The three-chamber high
volume design, driven by a heavy-duty motor produces flow rates of 3 GPM, capable of self-priming up to
6 vertical feet, and can run dry, making it the price to performance leader. This pump also offers a variety
of easy connect fittings and filters.
FEATURES
Intermittent duty
3 chamber diaphragm pump
Industry standard mounting pattern
Run dry capable for normal workloads
Ignition protected
Automatic: controlled by pressure switch
Self priming
Quiet Operation
INSTALLATION
Materials
(if desired) Teflon tape or sealant
4 screws to fasten the pump to the mounting surface
1 diaphragm pump with related accessories
2 (at least) pieces of flexible, reinforced hose piping, with collapsing strength of twice the inlet collapsing
pressure( hose must be minimum 1/2" ID )
1 electrical cutoff switch
1 strong cutting implement for tubing
4 stainless steel hose clamps and screws
1 fuse
1 screwdriver
APPLICATIONS
Any other pressurization system
Yacht/RV/caravan pressurized water system
Sprayer fixtures (vehicle-mounted sprayers, electric sprayers)
Cleaning machines, humidifier, water purification, medical apparatus
Food beverage filling & liquid transfer
Solar water system
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.
CAUTION
1
page
4
page
PUMP FAILS TO TURN OFF AFTER ALL FIXTURES ARE CLOSED
Clogged valves in pump head.
Punctured diaphragm.
Defective pressure switch.
Insufficient voltage.
Discharge line leak.
LOW FLOW AND PRESSURE
Air leak at pump intake.
Punctured diaphragm.
Worn pump bearing (possibly accompanied by loud noise).
Defective motor.
Accumulation of debris inside pump or plumbing.
NOISY
Is the mounting surface flexible? If so, it may be adding noise.
Check if the mounting feet are compressed too tightly.
Check for loose head/screws.
If the pump is plumbed with rigid pipe, then it may transmit noise more easily.
FAILURE TO PRIME BUT MOTOR OPERATES - NO PUMP DISCHARGE
Restricted intake or discharge line.
Air leak in intake line.
Crack in pump housing.
Debris clogged in the valves.
Punctured pump diaphragm.
Initial amp supply is not enough to sufficiently start the motor.
MOTOR FAILS TO TURN ON
Loose or improper wiring.
Failed pressure switch.
Pump circuit has no power.
Blown fuse or thermal protection tripped.
Defective motor.
Diaphragm Pump Manual - 33 Series

Seaflo 33 Series Specifications

General

Voltage	12V DC
Max Pressure	45 PSI (3.1 Bar)
Self-Priming	Yes
Diaphragm	Santoprene
Check Valve	EPDM
Type	Diaphragm Pump
Housing Material	Polypropylene
Flow Rate	3.0 GPM
Operating Temperature	140°F (60°C) Max.

Summary

Features

3 Chamber Diaphragm Pump

Describes the pump's core construction for high volume output.

Intermittent Duty Operation

Indicates the pump is designed for intermittent operation cycles, not continuous use.

Industry Standard Mounting

Refers to the pump's mounting compatibility with standard industry fixtures and systems.

Run Dry Capability

Highlights the pump's ability to operate without water, preventing damage during dry runs.

Automatic Pressure Control

The pump operates automatically based on pressure changes controlled by an integrated switch.

Ignition Protected Design

Designed with safety features to prevent ignition in potentially flammable environments.

Self Priming

The pump can lift water from a lower level without manual priming, up to a specified height.

Quiet Operation

Designed to minimize noise and vibration during operation for a more comfortable environment.

Applications

Pressurized Water Systems

Commonly used in RVs, caravans, and yachts for onboard pressurized water supply.

Sprayer Fixtures

Suitable for vehicle-mounted or electric sprayers in various applications.

Cleaning and Purification Systems

Utilized in cleaning machines, humidifiers, water purification, and medical apparatus.

Food Beverage & Liquid Transfer

Used for transferring food and beverages, and other liquids in various industries.

Solar Water Systems

Applicable for use in solar-powered water heating and circulation systems.

General Pressurization Systems

Can be used for any system requiring water pressurization beyond standard applications.

Installation

Materials Required

Lists all necessary components and tools for proper pump installation, including hoses and fittings.

Setup

Mounting Position and Securing

Guidance on pump mounting orientation and screw tightening to avoid noise and vibration.

Hose and Plumbing Specifications

Details on intake hose size, distribution lines, and flexible tubing for vibration/noise reduction.

Inlet Pressure and Fittings

Recommendations to avoid inlet pressure and ensure secure, leak-free fittings.

Electrical Wiring and Protection

Instructions for dedicated circuits, positive/negative connections, switch installation, and fuse requirements.

Voltage Check

Procedure to verify the correct voltage is available at the pump motor during operation.

Notes on Installation and Usage

Piping Material Recommendations

Preference for flexible hose over rigid piping to minimize noise and vibration.

Bypass Adjustment Warning

Caution against adjusting the bypass without professional assistance.

Maintenance and Winterization

Emphasis on regular maintenance and winterizing for optimal pump performance.

Grounding Requirements

Mandatory grounding for AC pump motors and systems per electrical codes.

Electrical Information

AC Wiring Specifications

Details on wire color coding for common, neutral, and ground for 115V and 230V systems.

Wire Gauge Chart

Table correlating wire length (feet/meters) to the required AWG wire size (MM²).

Repair Kits

Component Identification

Diagram and key identifying common pump components available in repair kits.

Troubleshooting

Pulsating Flow

Addresses issues where the pump cycles on and off frequently, suggesting checks for kinks, line size, and air leaks.