onsen 3.0 User manual

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INDEX
Features and Specifications……………………...................................3
Installation.............………………………...............................................4
Wiring............……………………...........................................................8
Plumbing .........……………………........................................................9
Operation .............……………………................................................10
Sanitizing …...………………………………………….................................11
Winterizing ......................………....................................................11
Troubleshooting……….................................................................13
Warranty ......................………….....................................................28
Thank you for purchasing the
ONSEN 3.0 DIAPHRAGM RV / MARINE WATER PUMP
Please take the time to read this manual carefully before attempting to
install or operate the pump. Improper use or installation may void the war-
ranty.
If you have any questions about how to use this product, please contact
Onsen at [email protected] or 800-996-5559.

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ENGLISH
Self-Priming Up To 6 Feet Suction Lift
Runs Dry Without Damage
Quiet Operation
Low Power Draw
FEATURES AND SPECIFICATIONS
Snap-In Port Fittings
Corrosion Resistant Materials
Soft Noise Absorbing Mounts
Built-In Check Valve And Ther-
mal Overload
Model
Voltage
Amp
Flow
Rate
Pressure
Rating
Control
Type
Valves
Diaphragm
Chambers
Onsen
3.0
12
7.5
3.0 GPM
/ 11.3L
55 PSI /
3.8 BAR
Switch &
Bypass
EPDM
Santoprene
4
Height (in/cm)
Length (in/cm)
Width (in/cm)
Weight (lb/kg)
4.25 in / 10.8 cm
8.5 in / 21.59 cm
4.5 in / 11.43 cm
4.18 lbs / 1.90 kg
0.16 in
4.0 cm
4.25 in / 10.8 cm
4.5 in / 11.43 cm8.5 in / 21.59 cm
8.87 in / 7.3 cm1.02 in / 2.6 cm

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NOTE: When installing the pump, some water from factory testing may spill
out.
INSTALLATION
Before installing the pump, check that all of the following components and
accessories are included in the box:
Water pump
Strainer
2 X ½” hose barb adapters
2 X ½” threaded adapters
12 volt battery alligator clips (w/ 15A fuse)

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Make sure to install the pump indoors in a dry area.
Mount the pump horizontally or vertically. If mounting vertically, make
sure to mount with pump head down to avoid damaging the motor in
case of leakage.
Secure the feet with 4 screws.
STEP 1 MOUNT PUMP
City Water
Inlet
Water
Tank
Water
Heater
Check
Valve
Strainer

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Insert the included hose barb or threaded quick connect adapters in the
inlet and outlet pump ports ,and slide clips to lock port connec-
tions.
If using the included strainer, insert into the inlet port and slide clip to
lock port connection.
Use ½” (13mm) I.D. flexible hose (preferably braided or reinforced) to
connect to the inlet and outlet of the pump. Use hose clamps to secure
the hose to the hose barb connectors (if hose barb adapters are being
used).
A
A B C
C
C
B
STEP 2 CONNECT WATER LINES

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Connect the positive red wire to the positive (+) terminal of your battery
and the negative black wire to the negative (-) terminal of your battery.
A 15 amp switch is recommended and should be installed on the
positive red wire.
Use a 15 amp fuse protection on the positive red wire to protect the
pump.
STEP 3 CONNECT PUMP TO 12V BATTERY
Ft. (m) AWG (mm2)
AWG14
30-50 (9-15)
0-30 (0-9)
50-65 (15-19)
AWG12
AWG10
NOTE: Connect using stranded wire with gauge size in relation to dis-
tance or length as defined in the table below.
Black (-)
(-)
Red (+) (+)
Fuse
Switch
Battery

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WIRING
The pump should be wired on its own dedicated circuit protected by the
recommended fuse indicated in this Operating Manual.
It is highly recommended to install an approved marine duty (ignition
protected) switch rated at 15 amps or above to control power to the
pump.
Make sure to shut offpower to the pump when not being used for ex-
tended periods of time.
Proper wire sizing is required for good pump operation. If the wire is
too small, low voltage will affect the pump performance and can create
a fire hazard.
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 requirements of all devices on the circuit.

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ENGLISH
The inlet and outlet hose must be a minimum ½” (13mm) I.D. flexible
hose to both ports. Using a hose with a smaller diameter can cause high
backpressure, cycling, low flow and noise.
Installation of a strainer is required to prevent debris from entering the
pump. Pump failure due to foreign debris is not covered and will void
the warranty.
Mount the pump within 5 feet of the tank (or any other water source)
for best performance and pump life. The greater the distance between
the pump and the water source, the higher the amount of strain on the
pump.
Plumb the system using high pressure, braided, flexible hose to mini-
mize vibration and noise. The pump’s ports and strainer should not be
connected to plastic or rigid pipes. The pump’s normal oscillation mo-
tion will transmit through rigid plumbing, causing noise and possibly
loosening or cracking components.
To prevent rapid cycling (pulsating flow) caused by excessive back pres-
sure, check for the following restrictive elements within your plumbing
system:
Water filters / purifiers NOT on separate feed lines
Flow restrictors in faucets and showerheads
ID hoses and pipes smaller than ½” (13mm) throughout the plumbing
system
PLUMBING

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OPERATION
NOTE: This pump is designed for intermittent duty only. Continuous
duty usage will shorten the life of the pump and is not covered under
the warranty.
Make sure the pump is installed properly according to the installation
instructions above (wait before powering the pump).
Make sure the battery being used to power the pump is fully charged.
Open the water source (showerhead, faucets, etc.) connected tothe pump.
Switch ON power to the pump. Water will begin to flow and fill the
water lines connected to a water heater, toilet, shower, etc. The goal
is to remove the air from the plumbing system and fill it with water.
Once the lines are completely filled with water, shut offall water fix-
tures (showerhead, faucets, etc.).
When all water fixtures are shut off, the pump will stop automatically
(if the pump fails to stop, switch OFF power to the pump and refer to
Troubleshooting on page 13 of this Operating Manual).
The pressurized plumbing system is now ready for use. Open the water
fixture needed and the pump will automatically start pumping water to it.
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ALWAYS SWITCH OFF POWER TO THE PUMP WHEN
LEAVINGIT UNATTENDED ORWHEN NOTIN USE.
CAUTION

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Potable water systems require periodic maintenance to keep components
working and to deliver a consistent flow of fresh water. Depending on use
and the environment the system is subjected to, sanitizing is recommend-
ed prior to storage and before using the water system after a period of
storage.
If water is left to freeze in the water system, serious damage to the plumb-
ing and the pump may occur. Failures of this type will void the warranty. The
best guarantee against damage is to completely drain the water system.
SANITIZING
WINTERIZING
NOTE: Check your RV, watercraft or other equipment’s manufacturer’s
manual for specific sanitizing instructions.
NOTE: When used per the manufacturer’s recommendations, non-tox-
ic antifreeze for potable water is safe for use with Onsen pumps. Refer
to the manufacturer for specific winterizing and drainage instructions.
DO NOT USE AUTOMOTIVE ANTIFREEZE TO WINTER-
IZE POTABLE WATER SYSTEMS. THESE SOLUTIONS ARE
HIGHLY TOXIC AND MAY CAUSE SERIOUS INJURY OR
DEATH IF INGESTED.
WARNING

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Drain the water tank. If the tank doesn’t have a drain valve, open all
water fixtures and allow the pump to operate until the tank is empty.
Do not operate the pump more than 15 minutes continuously.
Switch OFF power to the pump and make sure that all water from the
drain lines is drained.
Remove the quick connect inlet and outlet fittings from the pump
and switch ON power to the pump to remove any remaining water
from the pump head. Switch OFF power to the pump and leave the
fittings disconnected from the pump until the system is ready to be
used again.
All fixtures must be left open to safeguard against any damage to the
plumbing.
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Perform the following steps to properly drain the system:

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ENGLISH
For support in English and French with troubleshooting and installation,
contact Onsen at [email protected] or 800-996-5559.
TROUBLESHOOTING
NOTE: Vibration induced by sea conditions or transporting can cause
plumbing or pump hardware to loosen. Check for system components
that are loose. Many symptoms can be resolved by simply tightening
the hardware. Check the following items along with other particulars
of your system.
BEFORE SERVICING THE PUMP, SHUT OFF THE PUMP
AND DRAIN WATER FROM THE SYSTEM!
WARNING
Symptom
Possible Causes
Pump does not prime
(motor operates, but
no pump
discharge)
Restricted intake or discharge line
Air leak in intake line
Debris in pump
Punctured pump diaphragm (pump leaks)
Crack in pump housing
Amp
Motor fails to turn on
Loose wiring connection
Pump circuit has no power
Blown fuse
Pressure switch failure
Defective motor
Restricted pump delivery: check discharge lines,

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Symptom
Possible Causes
closed
Empty water tank
Punctured pump diaphragm (pump leaks)
Discharge line leak
Defective pressure switch
Air leak at pump intake
Accumulation of debris inside pump and plumbing
Worn pump bearing (excessive noise)
Punctured pump diaphragm (pump leaks)
Defective motor

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WARRANTY
ONSEN LIMITED WARRANTY
Limited Warranty Coverage
This Limited Warranty covers any product defects in material or workman-
ship under normal use and maintenance when installed and operated ac-
cording to the Operating Manual.
During the Warranty Period, Onsen will repair or replace, at no charge,
products or parts of a product that proves defective because of improper
material or workmanship, under normal use and maintenance when in-
stalled and operated according to the Operating Manual.
Except as expressly set forth herein, there are no representations or warranties,
express or implied, including, without limitation, as to merchantability or fitness
for a particular purpose with respect to any goods sold hereunder. Buyer’s ex-
clusive remedy is limited to repair or replacement of the goods sold, at Onsen’s
discretion. Onsen shall not be liable for incidental or consequential damages.
Limited Warranty Period
The Warranty Period is as follows:
2 YEARS from date of purchase on Parts
30 DAYS from date of purchase on Accessories

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Limited Warranty Exclusions
This Limited Warranty becomes null and void if product failure is deter-
mined to be the result of any of the following:
Careless operation or handling, misuse, abuse and/or lack of main-
tenance or use not in accordance with the Onsen Operating Manual.
Freeze damage.
Pumping liquids containing chemical agents (ex: cleaning liquids).
Pump failure due to foreign debris (use a strainer to prevent debris
from entering the pump).
Installation in a corrosive or otherwise destructive environment.
Inadequate water quality.
Scale buildup.
Acts of Force Majeure.
Limited Warranty Claims and Shipping Costs
All warranty claims must be pre-approved by Onsen before shipment of
products and/or parts.
Any warranty related shipments to Onsen that have not been pre-approved
by Onsen will be the responsibility of the shipper.
For pre-approved warranty claims, responsibility for shipping costs will be
allocated as follows:
Within 60 DAYS of the date of purchase: ground shipping within Canada
only (territories excluded) will be covered by Onsen with the carrier of
Onsen’s choosing.
After 60 DAYS of the date of purchase: customer is responsible for ship-
ping costs.
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