MOLEAER BLOOM 1.5 Troubleshooting guide

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
CUSTOMER SERVICE / TECHNICAL SUPPORT
If you have questions or need to order
Moleaer, Inc. replacement parts and
products, please use the following contact
information:
CUSTOMER SERVICE:
Monday to Friday: 8:00 a.m. to 5:00 p.m.
PST
Phone: [phone]
Email: [email protected]
WEBSITE:
www.moleaer.com

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com i
Table of Contents
Safety Instructions................................................................................................................................................................ 3
Important Notice.................................................................................................................................................................. 3
Attention Installer ............................................................................................................................................................ 3
Attention User.................................................................................................................................................................. 3
Risk of Electrical Shock................................................................................................................................................... 3
General Warnings ................................................................................................................................................................. 3
Suction Entrapment Hazard ............................................................................................................................................ 4
Information About the System............................................................................................................................................. 5
Gas - Specifications.............................................................................................................................................................. 5
Gas Connection................................................................................................................................................................... 5
Gas Flow and Pressure....................................................................................................................................................... 5
Gas Pressure Switch and Low Pressure Warning Light ..................................................................................................... 6
System Operation ................................................................................................................................................................. 6
Automatic Operation ........................................................................................................................................................... 7
Controller Operation (Bloom IQ Only)............................................................................................................................. 7
Bloom IQ Timer Mode ..................................................................................................................................................... 8
Changing Setpoints......................................................................................................................................................... 8
Menu Navigation ............................................................................................................................................................. 8
Continuous Operation ......................................................................................................................................................... 9
Intermittent Operation (Standard Bloom Only).................................................................................................................. 10
Pump Maintenance ............................................................................................................................................................. 10
Pump Strainer Basket Care .............................................................................................................................................. 10
Cleaning the Pump Strainer Basket.............................................................................................................................. 10
Winterizing......................................................................................................................................................................... 11
Motor Care ........................................................................................................................................................................ 11
Shaft Seal Replacement ............................................................................................................................................... 11
Pump Disassembly ........................................................................................................................................................... 12
Pump Reassembly ............................................................................................................................................................ 12
Restart Instructions ....................................................................................................................................................... 12
Priming the Pump.......................................................................................................................................................... 13
Cleaning and Sanitizing...................................................................................................................................................... 13
General Cleaning Procedures....................................................................................................................................... 13
Safety Precautions ........................................................................................................................................................ 14
Troubleshooting Guide....................................................................................................................................................... 15

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com ii
Pump Performance Curves ................................................................................................................................................ 18
Limited Warranty................................................................................................................................................................. 19
Warranty............................................................................................................................................................................ 19
Claims; Exclusive Remedy................................................................................................................................................ 19
Limited Warranty ............................................................................................................................................................... 19
Document Revision History ............................................................................................................................................... 20

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 3
Safety Instructions
Important Notice
This guide provides operation and
maintenance instructions for this product.
Consult Moleaer with any questions
regarding this equipment.
Attention Installer
This guide contains important information about the
operation, maintenance, and safe use of this product. This
information should be given to the owner and / or operator
of this equipment after installation. This Bloom nanobubble
generator is for INDOOR USE ONLY. If it must be installed
outside, a minimum coverage is a full roof.
Attention User
This manual contains important information that will help
you in operating and maintaining this product. Please retain
it for future reference. Warnings and safety instructions for
Moleaer Bloom Nanobubble Generators and other related
products are available at http://www.moleaer.com or call
U.S. [phone] for additional free copies of these
instructions.
READ AND FOLLOW ALL INSTRUCTIONS. SAVE
THESE INSTRUCTIONS.
This is the safety alert symbol. When you
see this symbol, on your system or in this
manual, look for one of the following
signal words and be alert to the potential
for personal injury.
Warns about hazards that can cause
death, serious personal injury, or major
property damage if ignored.
Warns about hazards that may or can
cause minor personal injury or property
damage if ignored.
NOTE
Indicates special instructions not related
to hazards. Carefully read and follow all
safety instructions in this manual and on
equipment. Keep safety labels in good
condition; replace if missing or damaged.
When installing and using this electrical equipment, basic
safety precautions should always be followed, including the
following:
Risk of Electrical Shock
Connect only to a branch circuit protected by a ground-fault
circuit interrupter (GFCI). Contact a qualified electrician if
you cannot verify that the circuit is protected by a GFCI.
This unit must be connected only to a supply circuit that is
protected by a ground-fault circuit interrupter (GFCI). The
GFCI should be provided by the installer and should be
tested on a routine basis. To test the GFCI, push the text
button. The GFCI should interrupt power. Push the reset
button. Power should be restored. If the GFCI fails to
operate in this manner, the GFCI is defective. If the GFCI
interrupts power to the pump without the test button being
pushed, a ground current is flowing, indicating the
possibility of an electric shock. Do not use this pump.
Disconnect the pump and have the problem corrected by a
qualified service representative before using.
General Warnings
Never open the inside of the pump drive motor enclosure.
There is a capacitor bank that holds a 230 VAC charge,
even when there is no power to the unit.
The Bloom pump is capable of high flow rates; use caution
when installing and programming to limit pump’s
performance potential with old or questionable equipment.
Before servicing the pump switch OFF power to the pump
by disconnecting the main circuit to the Bloom generator.
This product is not intended for use by persons (including
children) of reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning
the use of the appliance by a person responsible for their
safety.
FAILURE TO FOLLOW ALL INSTRUCTIONS AND
WARNINGS CAN RESULT IN SERIOUS BODILY
INJURY OR DEATH. THIS PUMP SHOULD BE
INSTALLED AND SERVICED ONLY BY A
QUALIFIED SERVICE PROFESSIONAL.
INSTALLERS, OPERATORS AND OWNERS
MUST READ THESE WARNINGS AND ALL
INSTRUCTIONS IN THE OWNER’S MANUAL
BEFORE USING THIS PUMP. THESE WARNINGS
AND THE OWNER’S MANUAL MUST BE LEFT
WITH THE PRODUCT OWNER.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 4
Suction Entrapment Hazard
Stay off main drain and away from all suction outlets!
This generator produces high levels of suction and creates
a strong vacuum at the main drain at the bottom of the body
of water. This suction is so strong that it can trap adults or
children under water if they come in close proximity to a
drain or a loose or broken drain cover or grate.
RISK OF ELECTRICAL SHOCK OR
ELECTROCUTION
PUMPS REQUIRE HIGH VOLTAGE WHICH CAN
SHOCK, BURN, OR CAUSE DEATH.
BEFORE WORKING ON THE CLEAR PUMP,
always disconnect power to the pump at the circuit
breaker from the pump before servicing the pump.
Failure to do so could result in death or serious injury
to service person, system users, or others due to
electric shock.
NOTE: All suction plumbing must be installed in accordance
with the latest national and local codes, standards, and
guidelines.
A clearly labeled emergency shutoff switch for the
equipment must be in an easily accessible, obvious
place. Make sure users know where it is and how to
use it in case of emergency.
This equipment has been evaluated for use with
water only.
Before operation, be sure to completely rinse the
pump volute with water.
RISK OF ELECTRICAL SHOCK
This pump is supplied with a grounding conductor
and grounding type attachment plug. To reduce the
risk of electric shock, be certain that it is connected
only to a properly grounded, grounding-type
receptacle.
Pumps improperly sized or installed or used in
applications other than for which the pump was
i
ntended can result in severe personal injury or
death. These risks may include but not be limited to
electric shock, fire, flooding, suction entrapment or
severe injury or property damage caused by a
structural failure of the pump or other system
component.
The pump can produce high levels of suction within
the suction side of the plumbing system. These high
levels of suction can pose a risk if a person comes
within the proximity of the suction openings. A
person can be seriously injured by this high level of
vacuum or may become trapped and drown. It is
absolutely critical that the suction plumbing be
installed in accordance with the latest national and
local codes for aquaculture systems.
HAZARDOUS PRESSURE. STAND CLEAR OF
PUMP AND FILTER DURING STARTUP.
CIRCULATION SYSTEMS OPERATE UNDER
HIGH PRESSURE. WHEN ANY PART OF THE
CIRCULATING SYSTEM (I.E. LOCKING RING,
PUMP, FILTER, VALVES, ETC.) IS SERVICED,
AIR CAN ENTER THE SYSTEM AND BECOME
PRESSURIZED. PRESSURIZED AIR CAN CAUSE
THE PUMP HOUSING COVER, FILTER LID AND
VALVES TO VIOLENTLY SEPARATE WHICH
CAN RESULT IN SEVERE PERSONAL INJURY
OR DEATH. FILTER TANK LID AND STRAINER
COVER MUST BE PROPERLY SECURED TO
PREVENT VIOLENT SEPARATION. STAND
CLEAR OF ALL CIRCULATION SYSTEM
EQUIPMENT WHEN TURNING ON OR STARTING
UP PUMP. BEFORE SERVICING EQUIPMENT,
MAKE NOTE OF THE FILTER PRESSURE. BE
SURE THAT ALL CONTROLS ARE SET TO
ENSURE THE SYSTEM CANNOT
INADVERTENTLY START DURING SERVICE.
TURN OFF ALL POWER TO THE PUMP.
IMPORTANT: PLACE FILTER MANUAL AIR
RELIEF VALVE IN THE OPEN POSITION AND
WAIT FOR ALL PRESSURE IN THE SYSTEM TO
BE RELIEVED. BEFORE STARTING THE
SYSTEM, FULLY OPEN THE MANUAL AIR
RELIEF VALVE AND PLACE ALL SYSTEM
VALVES IN THE “OPEN” POSITION TO ALLOW
WATER TO FLOW FREELY FROM THE TANK
AND BACK TO THE TANK. STAND CLEAR OF
ALL EQUIPMENT AND START THE PUMP.
IMPORTANT: DO NOT CLOSE FILTER MANUAL
AIR RELIEF VALVE UNTIL ALL PRESSURE HAS
BEEN DISCHARGED FROM THE VALVE AND A
STEADY STREAM OF WATER APPEARS.
OBSERVE FILTER PRESSURE GAUGE AND BE
SURE IT IS NOT HIGHER THAN THE PRE-
SERVICE CONDITION.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 5
Information About the System
The Moleaer Bloom product is a nanobubble gas-injection
technology tailormade for the horticulture market. Its
principle function is to alter the economics of using oxygen
to improve the quality of irrigation water, promote plant
growth and suppress disease. With simplicity and near
perfect efficiency, the Bloom nanobubble generator super
saturates irrigation water with dissolved oxygen and trillions
of negatively charged nanobubbles. These tiny bubbles,
about 100x smaller than a red blood cell, have several
unique physical properties that make them behave very
different from normal bubbles. Nanobubbles are neutrally
buoyant and remain stable in solution for prolonged periods
of time, creating an oxygen buffer in the water. The
combination of the Bloom’s high oxygen transfer efficiency
and stable oxygen enriched nanobubbles enable higher
oxygen transfer into the root zone where oxygen
enrichment plays an important role in facilitating nutrient
absorption and pathogen suppression.
Models
Bloom 25 (U.S.) Bloom 25 (EU)
Bloom 50 (U.S.) Bloom 50 (EU)
Bloom 150 (U.S.) Bloom 150 (EU)
1. System Controller
2. On / Off / Auto Selector Switch
3. Power Cord
4. CGA-022 Oxygen Inlet Connection
5. System Discharge
6. Oxygen Rotameter
7. Air Pressure Gauge (160 PSI / 11 BAR)
8. Water (Pump) Pressure Gauge (60 PSI / 4 BAR)
9. Low Gas Pressure Warning Light
10. System Inlet
11. Oxygen Injection Light
Gas - Specifications
The Moleaer Bloom nanobubble generator is designed for
use with compressed oxygen or ambient air.
Do NOT mix gases with this system.
All gas fittings and hoses must be maintained free
from oil and lubricants.
DO NOT PERMIT SMOKING OR OPEN FLAMES
IN ANY AREAS WHERE OXYGEN IS STORED OR
HANDLED. THE BLOOM GENERATOR MUST BE
SEPARATED FROM FLAMMABLES AND
COMBUSTIBLES BY AT LEAST 20’ (6 METERS)
OR 1/2 HOUR FIRE WALL.
Gas Connection
Moleaer Bloom generators come with a standard CGA-022
fitting (9/16” -18 UNF female) fitting.
The Bloom is equipped with a valve that will automatically
open while the system is operating and allow oxygen to flow
into the system.
Gas Flow and Pressure
1. Adjust the gas regulator on the feed gas tank to
supply the Bloom generator with a minimumgas
pressure of 100 PSI (6.9 BAR).
DO NOT EXCEED 120 PSI (8.3 BAR) IN GAS
PRESSURE
Excessive gas pressure may compromise seals
inside the generator and result in a sudden drop in
pressure. If this occurs, close the gas flow meter
completely, reduce the gas pressure feeding the
generator, and then slowly reopen the valve again to
the desired gas flow set point.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 6
2. Apply soapy water to gas fittings and connectors to
ensure there are no gas leaks. If leaks are
detected, then tighten fittings and / or connectors.
3. Gas flow rates can be adjusted depending on
application and desired effect. The Bloom
generators are designed to deliver a spectrum of
nano and / or micro bubbles to meet the
requirements of the process or application. Low
gas flow rates produce more nanobubbles and
have a higher gas transfer efficiency, whereas
higher gas flow rates produce both nano and
microbubbles that have a lower gas transfer
efficiency, but higher mass transfer rate. Refer to
the specification table for suggested gas flow rates
for the different size units.
Gas Pressure Switch and Low Pressure
Warning Light
This product is equipped with a pressure switch located
outside of the automatic gas inlet valve.
1. The default setpoint for the supply gas pressure
switch is 40 PSI (2.75 BAR).
2. If the supply gas pressure drops below the setpoint,
the red Low Gas Pressure Warning Light will turn
on and the automatic gas inlet valve will close. The
unit will continue to inject oxygen for as long as gas
pressure exceeds pump discharge pressure.
3. The maximum supply pressure is 120 PSI (8.3
BAR).
NOTE: Operating the system with lower than the
recommended supply pressure may impact the ability
to provide the optimal gas flow rate and will result in
less than optimal performance.
4. The gas pressure switch setpoint can be changed
to expand or restrict the operating range of the
Bloom generator.
5. Gas pressure and pump discharge pressure can be
checked using the gauges on the front of the
Bloom.
To change the supply gas pressure switch setpoint:
1. Rotate the locking ring on the top of the pressure
switch clockwise, until the “UNLOCK” symbol lines
up with the setting marks.
2. Rotate the SET and RESET dials to the desired
setpoint.
NOTE: It is recommended to keep the SET and
RESET dials at the same pressure.
3. Rotate the locking ring on the top of the pressure
switch counterclockwise, until the “LOCK” symbol
lines up with the setting marks.
System Operation
Pump must be fully primed before initial operation.
The pump is capable of self-
priming if there is
sufficient water in the pump strainer basket.
Operation at or near zero flow can cause extreme
heat, personal injury, or property damage.
1. Open the intake and discharge valves to flood
piping and prime the pump. Pump is primed by
removing the strainer lid, filling the strainer
basket with water, and replacing the strainer lid
before starting. It will take a few minutes for the
pump to reach full flow and the strainer basket
is full, as can be seen through the lid.
NOTE: If the Bloom generator is located above the
water line of the tank or water body, it is important to
install a check valve just above the intake screen.
Leaks in suction piping may only be visible while
pump is off and piping is flooded. Leaks in suction
piping may draw air into the system and impact
performance.
2. Turn green selector switch to “ON” and run pump
at normal operating conditions and check the
piping for visible leaks. If necessary, adjust the pipe
supports.
NOTE: Normal operating pressure range on the pump
is between 13 PSIG and 25 PSIG (0.9 BAR to 1.7
BAR). Pump flow rates should be +/- 10% of the
system’s designed flow. Pump flow rates lower than the
system specifications will result in larger bubbles and
lower oxygen transfer efficiencies – it is NOT
recommended.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 7
Do NOT exceed 25 PSI (1.72 BAR) on pump
pressure.
3. Every Bloom unit comes with an adjustable
rotameter (see general arrangement). The valve
knob on the rotameter allows for adjustment of the
gas flow. Refer to the table below for the maximum
and optimal flow.
Model
Maximum Gas
Flow (CFH / LPM)
Optimal Gas
Flow (CFH / LPM)
Bloom 25 2.5 / 1.2 1.5 / 0.6
Bloom 50 5 / 2.3 2.5 / 1.2
Bloom 150 15 / 7 7.5 / 3.5
NOTE: Operating the system with lower than the
recommended supply pressure may impact the ability
to provide the optimal gas flow rate and will result in
less than optimal performance.
Automatic Operation
Automatic Operation can be selected by turning the green
selector switch to the “AUTO” position. This switch will light
up when either mode has been selected.
Controller Operation
The four button / LED display interface allows continuous
monitoring of sensor values, as well as for quick changes
to LOW and HIGH setpoints. The screen displays the
real-time reading from the Dissolved Oxygen sensor and if
the reading is currently below the LOW or above the HIGH
setpoints.
The controller is factory programmed to measure the
supplied Dissolved Oxygen sensor’s maximum range of
0.00 to 40.00 mg/L.
When the sensor reading is below the LOW setpoint, the
“1” indicator on the display will be lit. The “2” indicator on
the display will be lit when the sensor reading is above the
HIGH setpoint.
By default, the LOW and HIGH setpoints are set to 15.00
mg/L and 25.00 mg/L, respectively. The system’s response
to these setpoints and how to change them are described
below.
Controller Operating Manual
Manual supplied separately.
Dissolved Oxygen Sensor
Manual supplied separately.
Oxygen Injection Mode
Regardless of operating mode, the controller will display the
current dissolved oxygen reading while the system is
plugged in.
When the Bloom system is first plugged in, the
sensor will perform a self-
calibration for
approximately ten seconds. Starting automatic
operation before this calibration is complete may
cause undesired operation.
1. If “AUTO” mode is first selected when the current
DO reading is below the “HIGH” setpoint, or if the
DO reading drops below the LOW setpoint, the
system will enter Oxygen Injection Mode.
2. Sensors in the Bloom have been included to detect
that the pump has started and is producing
pressure, and that the oxygen supply pressure is
above the minimum value. If these conditions are

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 8
met, the green “Oxygen Injection” light on the front
panel of the Bloom with light up, the oxygen valve
will open, and the system will begin injecting
oxygen.
3. The system will continue injecting oxygen until the
“HIGH” setpoint is reached. At this point, the
system will stop injecting oxygen and switch over
to timer mode.
Timer Mode
The Bloom utilizes an optical sensor, which does not
consume dissolved oxygen. Therefore, is it necessary to
periodically circulate water through the system to obtain a
dissolved oxygen reading that is representative of the
supply tank or reservoir.
1. The system will wait for a given interval before
running the pump to perform a check of the DO
level, repeating the process indefinitely. During
these checks, the green “Oxygen Injection” light on
the front panel will not light up, and the oxygen
valve will not open.
2. The light on the selector switch will remain lit while
the system is in timer mode.
3. The factory default setting for the DO check
duration is ten minutes, and the default interval
between checks is one hour. Instructions to
change these intervals are provided below.
4. Once the DO reading drops below the LOW
setpoint, timer mode will end and the system will
return to oxygen injection mode.
Changing Setpoints
To change the LOW setpoint:
1. Press the or buttons to begin toggling
through the menu.
2. When the display shows “SP1”, press the ⏎button.
3. The current LOW setpoint will be displayed. Press
and hold the or buttons to begin changing the
setpoint.
4. Once the desired value has been reached, press
the ⏎button to confirm the value.
5. The text “STRD” will display on the screen before
return to the current reading.
To change the HIGH setpoint:
1. Press the or buttons to begin toggling
through the menu.
2. When the display shows “SP2”, press the ⏎button.
3. The current HIGH set point will be displayed. Press
and hold the or buttons to begin changing the
setpoint.
4. Once the desired value has been reached, press
the ⏎button to confirm the value.
5. The text “STRD” will display on the screen before
return to the current reading.
Ensure that SP1 is the LOW setpoint and SP2 is the
HIGH setpoint. Reversing these values may cause
undesired operation.
Menu Navigation
The controller will enter Normal Run Mode when first
powered on, and should only be manipulated to change the
HIGH and LOW setpoints.
If the controls are manipulated to navigate away from
Normal Run Mode or changing SP1 or SP2, the display will
cycle through the other options in “Operating Mode”.
To return to Normal Run Mode from anywhere in the menu
structure:
1. Navigate to the top level menu by pressing the ↑
button several times. The top level menu will have
the options “oPER”, “PRoG”, and “INIt”.
2. Enter Operating Mode by selecting “oPER” with
the or buttons and press the ⏎button.
3. Select RUN with the ⏎button to enter Normal Run
Mode.
The controller will continue to operate if the menu is
navigated away from normal run mode. However,
the display will not return to the current reading until
the operator navigates back to normal run mode.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 9
Changing Check Duration and Interval Between
Dissolved Oxygen Checks
The factory default setting for the DO check duration is ten
minutes, and the default interval between checks is one
hour. The timer comes preset with a maximum range of 9
hours 59 minutes for the “OFF” setting and 99.9 minutes for
the “ON” setting.
To change the timer intervals:
1. While Automation Operation is selected and the
system is in Timer Mode, open the Bloom
Electrical Box to access the internal time. The
Timer display will be lit when Timer Mode is active.
2. Hold the “S” button for five seconds.
3. The “ON” duration will display. Use the arrows to
adjust the value and press the “S” button to
advance to the next position.
4. After the “OFF” duration is entered and the “S”
button is pressed again, Time Set mode is exited
and all parameters are saved.
5. After making changes, close and secure electrical
box door. Turn selector switch to “OFF” and back
to “AUTO” to restart Timer Mode with updated
settings.
Ensure that the “ON” duration is long enough for the
pump to sufficiently circulate the water volume in the
supply tank / reservoir.
If a different maximum duration is desired, the value can be
changed. Time ranges of 99:9 Sec, 999 Sec, 9:59 M:S,
99:9M, 999 M, 9:59 H:M, 99:9 H, and 999 H are available.
To change the maximum durations:
1. While Automation Operation is selected and the
system is in Timer Mode, press and hold the “M”
button on the timer for three seconds. The Timer
display will be lit when Timer Mode is active.
2. Advance through the parameters by pressing the
“S” button. The screen will display “ON” and “OFF”
to indicate the maximum durations can be
changed.
3. Adjust the maximum duration using the arrows.
4. Press and hold the “M” button on the timer for three
seconds to exit configuration mode and save
settings.
5. Check timer intervals to confirm the desired
durations are set.
6. After making changes, close and secure electrical
box door. Turn selector switch to “OFF” and back
to “AUTO” to restart Timer Mode with updated
settings.
Improperly changing the maximum interval durations
set by the factory can lead to undesired operation.
The default timer ope
rating mode is mode “C”.
Changing the operating mode may result in
undesired operation.
Continuous Operation
Continuous Operation can be selected by turning the green
selector switch to the “ON” position. This switch will light up
when either mode has been selected.
When Continuous Operation is selected, the system will
bypass the controller and enter the Oxygen Injection Mode.
1. The pump will start. The Bloom’s sensors will
determine if the pump is started and is producing
pressure, and if the gas supply pressure is above
the minimum value.
2. If these conditions are met, the green “Oxygen
Injection” light on the front panel of the Bloom will

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 10
light up, and the oxygen valve will open. The
system will begin injecting oxygen.
3. The controller on the Bloom will continue to display
the current dissolved oxygen reading. In
Continuous Operation, the setpoints will have no
impact on operation.
In continuous operation mode, the system will
continue to run until the selector switch is turned to
“OFF”. If low customer gas supply is detected, the
oxygen valve will close, but the pump will continue to
run.
Intermittent Operation (Standard Bloom
Only)
Continuous Operation can be selected by turning the green
selector switch to the “ON” position. This switch will light up
when either mode has been selected.
When Continuous Operation is selected, the system will
bypass the controller and enter the Oxygen Injection Mode.
1. The pump will start, and the Bloom’s sensors will
determine if the pump is started and is producing
pressure, and if the gas supply pressure is above
the minimum value.
2. If these conditions are met, the green “Oxygen
Injection” light on the front panel of the Bloom will
light up, the oxygen valve will open. The system will
begin injecting oxygen.
3. The controller on the Bloom will continue to display
the current dissolved oxygen reading. In
Continuous Operation, the setpoints will have no
impact on operation.
Pump Maintenance
Do NOT open the strainer pot if pump fails to prime
or if pump has been operating without water in the
strainer pot. Pumps operated in these circumstances
may experience a buildup of vapor pressure and
may contain scalding hot water. Opening the pump
may cause serious personal injury. In order to avoid
the possibility of person
al injury, make sure the
suction and discharge valves are open and strainer
pot temperature is cool to touch, then open with
extreme caution.
To prevent damage to the pump and for proper
operation of the system, clean pump strainer and
system regularly.
Pump Strainer Basket Care
The strainer basket (or ‘strainer pot’), is located in front of
the pump housing. The strainer basket must be kept clean
and free of debris. Inspect basket through the lid on the top
of the housing.
Be sure to visually inspect the strainer basket every one to
four weeks. Dirty strainer baskets reduce filter and heater
efficiency and put abnormal stress on the pump motor.
Bacterial fouling could cause the lid to not be clear.
Cleaning the Pump Strainer Basket
1. Turn off the pump at the circuit breaker.
2. Relieve pressure in the system.
3. Turn the lid and clamp counterclockwise and
remove from the pump.
4. Remove debris and rinse out the basket. Replace
the basket if it is cracked.
5. Put the basket back
into the housing. Be
sure to align the notch
in the bottom of the
basket with the rib in
the bottom of the
volute.
6. Fill the pump pot and
volute up to the inlet
port with water.
7. Clean the lid and
clamp, O-ring, and
sealing surface of the
pump pot.
NOTE: It is important to keep the lid O-ring clean and
well lubricated.
8. Reinstall the lid by placing the clamp and lid on the
pot. Be sure the lid O-ring is properly placed. Seat
the clamp and lid on the pump then turn clockwise
until the locking ring handles are horizontal.
9. Turn the power “ON” at the circuit breaker.
10. Open the manual air relief valve on the top of the
filter. Stand clear of the filter.
11. Wait until all pressure is relieved. Start the pump.
12. Bleed air from the filter until a steady stream of
water comes out of the filter air relief valve. Close
the manual air relief valve.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 11
THIS SYSTEM OPERATES UNDER HIGH
PRESSURE
When any part of the circulating system (e.g., Lock
Rink, Pump, Filter, Valves, etc.) is serviced, air can
enter the system and become pressurized.
Pressurized air can cause the lid to separate, which
can result in serious injury, death, or property
damage. To avoid this potential hazard, follow the
above instructions.
Winterizing
1. In mild climate areas, when temporary freezing
conditions may occur, run your filtering equipment
all night to prevent freezing.
2. You are responsible for determining when freezing
conditions may occur. If freezing conditions are
expected, take the following steps to reduce the
risk of freeze damage. Freeze damage is not
covered under warranty.
To prevent freeze damage, follow the procedures below:
1. Shut off electrical power for the pump at the circuit
breaker.
2. Drain the water out of the pump housing by
removing the two thumb-twist drain plugs from the
housing. Store the plugs in the pump basket.
3. Cover the motor to protect it from severe rain,
snow, and ice.
NOTE: Do not wrap motor with plastic or other
airtight materials during winter storage. The motor
may be covered during a storm, winter storage, etc., but
never when operating or expecting operation.
PUMP SERVICE
Always disconnect power to the Bloom generator
and / or pump at the circuit breaker before servicing
the pump. Failure to do so could result in death or
serious injury to service people, users or others due
to electric shock. Read all servicing instructions
before working on the pump.
Do NOT open the strainer pot if pump fails to prime
or if pump has been operating without water in the
strainer pot. Pumps operated in these circumstances
may experience a build-up of vapor pressure and
may contain scalding hot water. Opening the pump
may cause serious personal injury. In order to avoid
the possibility of personal injury, make sure the
suction and discharge valves are open and strainer
pot temperature is cool to touch, then open with
extreme caution.
Be sure not to scratch or mar the polished shaft seal
faces; seal will leak if faces are damaged. The
polished and lapped faces of the seal could be
damaged if not handled with care.
Motor Care
Protect from Heat
1. It is recommended to shade the Bloom generator
from the direct sun.
2. Provide ample cross ventilation to prevent
overheating.
Protect Against Dirt
1. Protect from any foreign matter or splashing water.
2. Do not store (or spill) chemicals on or near the
motor.
3. Protect from any foreign matter or splashing water.
4. Avoid sweeping or stirring up dust near the motor
while it is operating.
5. If a motor has been damaged by dirt it voids the
motor warranty.
6. Clean the lid and clamp, O-ring, and sealing
surface of the pump pot.
Protect Against Moisture
1. Protect from splashing or sprayed water.
2. Protect from extreme weather.
3. Protect from any foreign matter or splashing water.
4. If a motor has become wet, let it dry before
operating. Do not allow the pump to operate if it has
been flooded.
5. If a motor has been damaged by water the motor
warranty is voided.
Shaft Seal Replacement
The shaft seal consists primarily of two parts, a
spring-loaded member, and rotating ceramic seal. The
pump requires little or no service other than reasonable
care; however, a shaft seal may occasionally become
damaged and must be replaced.
NOTE: The polished and lapped faces of the seal could be
damaged if not handled with care.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 12
Pump Disassembly
Tools Required
1. A 3/32” Allen head wrench
2. Two 9/16” open end wrenches
3. No. 2 or 3 Phillips head screwdriver
4. Adjustable wrench
5. 1/4” Allen head wrench
To remove and repair the motor subassembly, follow the
steps below:
1. Turn off the pump circuit breaker at the main panel.
2. Drain the pump by removing the drain plugs. No
tools are required.
3. Use the 9/16” wrenches to remove the six bolts that
hold the housing (strainer pot / volute) to the rear
subassembly.
4. Gently pull the two pump halves apart, removing
the rear subassembly.
5. Use a 3/32” Allen head wrench to loosen the two
holding screws located on the diffuser.
6. Hold the impeller securely in place and remove the
impeller lock screw by using a Phillips head
screwdriver. The screw is a left-handed thread and
loosens in a clockwise direction.
7. Use a 1/4" Allen wrench to hold the motor shaft in
the rear of the motor. The motor shaft has a slot on
the end which is accessible through the center of
the fan cover.
8. To unscrew the impeller from the shaft, twist the
impeller counterclockwise.
9. If the seal needs replacing, remove the white-
colored, rotating portion of the mechanical seal
from the impeller.
10. Remove the four bolts from the seal plate to the
motor, using a 9/16” wrench.
11. Place the seal plate face down on a flat surface and
tap out the carbon spring seat.
12. Clean the seal plate, seal bore, and the motor
shaft.
Pump Reassembly
1. When installing the replacement shaft seal, use
silicone sealant on the metal portion before
pressing into the seal plate, being careful to keep
off of the seal face. Be sure the seal is fully seated
and allow 24 hours for sealant to cure. (Complete
seal plate with seal replacement kit available, P/N
350101SS).
2. Before installing the rotating portion of the seal into
the impeller, be sure the impeller is clean. Use a
light density soap and water to lubricate the inside
of the seal. Press the seal into the impeller with
your thumbs and wipe off the ceramic and carbon
faces with a clean cloth.
3. Remount the seal plate to the motor.
4. Grease the motor shaft thread and screw impeller
onto the motor shaft.
5. Screw in the impeller lock screw (counterclockwise
to tighten).
6. Remount the diffuser onto the seal plate. Be sure
the plastic pins and holding screw inserts are
aligned.
7. Grease the diffuser O-ring and seal plate gasket
prior to reassembly.
8. Assemble the motor subassembly to the pump
housing by using the two through bolts for proper
alignment. Do not tighten the through bolts until all
six bolts are in place and finger tightened.
9. Fill the pump with water.
10. Reinstall the pump lid and plastic clamp. Refer to
“Cleaning the Pump Strainer Basket” on page 10.
11. Prime the pump. Follow the Restart Instructions in
the next section for startup.
Restart Instructions
If pump is installed below the water level, close return and
suction lines prior to opening the strainer pot on the pump.
Be sure to re-open valves prior to operating.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 13
Priming the Pump
The pump strainer pot must be filled with water before the
pump is initially started. Follow the steps below to prime the
pump:
1. Remove the pump lid plastic clamp. Remove the
pump lid.
2. Fill the pump strainer pot with water.
3. Reassemble the pump lid and locking ring onto the
strainer pot. The pump is now ready to prime.
4. Open the air relief valve on the filter and stand clear
of the filter.
5. Turn on the pump.
6. When water comes out of the filter air relief valve,
close the valve. The system should now be free of
air and recirculating water throughout the system.
7. For variable speed and two speed pumps, pump
should run on high speed for priming.
The pump should not run longer than eight minutes
if priming is not achieved.
Do NOT run the pump dry. If the pump is run dry, the
mechanical seal will be damaged, and the pump will
start leaking. If this occurs, the damaged seal must
be replaced. ALWAYS maintain proper water level.
If the water level falls below the suction port, the
pump will draw air through the suction port, losing
the prime and causing the pump to run dry, resulting
in a damaged seal. Continued operation in this
manner could cause a loss of pressure, resulting in
damage to the pump case, impeller and seal and
may cause property damage and personal injury.
Cleaning and Sanitizing
In normal operation, the internal elements of the Bloom
generator can become fouled by mineral scale, biological
matter, colloidal particles, and insoluble organic
constituents. Deposits can build up on the internal surfaces
during operation and can cause diminished operation. Best
practices include routine preventative cleaning with acid
and alkali chemicals. In some instances, if large solids can
pass into the generator, blockages can occur.
General Cleaning Procedures
1. Prepare the cleaning solution
2. Introduce the cleaning solution
3. Recycle
4. Soak
5. Conduct high-flow pumping
6. Flush out
7. Restart

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Instructions
www.moleaer.com 14
Safety Precautions
1. Maximum Temperature:100°C (212°F).
2. pH Tolerance Range:2 to 14.
3. Each cleaning situation is different; therefore,
specific cleaning recommendations are dependent
on the type of foulant. Consult the general cleaning
instructions for information that is common to all
types of cleaning such as suggested equipment,
pH and temperature limits and recommended flow
rates; then apply the specific recommendation as
needed.
4. When using any chemical indicated here or in
subsequent sections, follow accepted safety
practices. Consult the chemical manufacturer for
detailed information about safety, handling, and
disposal.
5. When preparing cleaning solutions, ensure that all
chemicals are dissolved and well mixed before
circulating the solutions through the elements.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Manual
www.moleaer.com 15
Troubleshooting Guide
Problem Possible Cause Corrective Action
Pump Will Not Prime •Air circulating in system.
•Gas valve open when pump not running.
•No water in the pump strainer pot.
•Check suction piping and valve on any suction
gate valves.
•Secure lid on pump strainer pot and be sure lid
gasket is in place. Check water level to make
sure suction port is not drawing air.
•Be sure suction lines, pump strainer, and
pump volute are full of water. Be sure valve on
suction line is working and open (some
systems do not have valves).
Pump Motor Not
Running
•Motor thermal protector tripped.
•Open circuit breaker or blown fuse.
•Impeller binding.
•Motor improperly wired.
•Defective motor.
•Reset overload.
•Reset Breaker or replace fuse.
•Clear the impeller.
•Check the motor is wired correctly.
Pump Gasket
Defective
•Defective gasket. •Replace gasket.
Reduced Capacity and
/ or Head
•Air pockets or leaks in suction line.
•Pump will not prime – too much air.
•Check suction piping and valve on any valve
suction gate valves.
•Secure lid on pump strainer pot and make sure
lid gasket is in place. Check water level to
make sure suction port is not drawing air.
•Clean pump strainer pot.
•Check to see if impeller or diffuser are
clogged.
Clogged Impeller •Debris in impeller. •Switch OFF electrical power at the circuit
breakers to the pump. Remove the nuts that
secure the volute to the seal plate.
•Slide the motor and seal plate away from the
volute. Clean debris from impeller.
•If debris cannot be removed, complete the
following steps:
oRemove impeller, reverse screw, and
O-ring;
oRemove, clean, and reinstall impeller;
oReinstall anti-spin bolt;
oReinstall diffuser and O-ring;

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Manual
www.moleaer.com 16
Problem Possible Cause Corrective Action
oReinstall motor and seal plate into
volute;
oReinstall hardware around seal plate
and volute and tighten securely.
Pump Strainer
Clogged
•Debris in pump strainer basket. •Clean suction trap.
Insufficient Dissolved
Oxygen Saturation
•Vacuum leaks in suction line.
•Gas flow too low.
•Check plumbing connections and suction
piping.
•Check to be sure suction port is not drawing
air into the system.
•Increase gas flow.
•Increase system run time.
Excessive Power
Consumption
•Impeller binding.
•NPSH too low – excessive suction lift or
losses.
•Discharge head too low – excessive flow rate.
•Check impeller.
•Check the pump curve for NPSH
requirements.
•Check the flow.
Pump Flow Too Low •Voltage too low. •Check and correct the voltage.
Pump Back Pressure
Too High
•Discharge nozzle or piping obstructed.
•Discharge valve engaged too much.
•Check for blockage in piping.
•Ensure all valves are fully open.
Low Gas Pressure on
System Gauge
•Feed gas pressure too low.
•Internal fouling.
•Follows specified “clean-in-place” procedures
to internal cleaning.
•Increase flow rate.
Gas Flow Meter Not
Working
•Moisture in the Rotameter.
•Blockage in needle valve.
•Clean Rotameter.
Too Many large
Bubbles
•Gas flow too high. •Reduce gas flow.
Insufficient Gas
Transfer
•Feed gas pressure too low.
•Delta gas pressure out of range.
•Excessive moisture and / or contaminant in the
gas line.
•Internal system fouling.
•Increase feed gas pressure at the gas
regulator.
•Clean Rotameter, gas lines, and fittings.
•Follow specified “clean-in-place” procedures
for internal cleaning.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Manual
www.moleaer.com 17
Problem Possible Cause Corrective Action
Excessive Noise and
Vibration
•Impeller binding.
•Pump is not primed fully – air or gases in
pumpage.
•NPSH too low – excessive suction lift or
losses.
•Incorrect rotation (3 phase only).
•Defective motor.
•Discharge, suction plugged, or valve closed.
•Impeller worn or plugged.
•Replace impeller if damaged.
•Completely flood intake piping to prime fully.
•Repair or replace motor if damaged.
•Open discharge valve or reduce restriction.
Automatic Mode
Selected but System
Not Running
•System currently in Timer Mode.
•Timer settings entered incorrectly.
•Confirm Selector Switch is lit and system
receiving power.
•Check / change setpoints on controller.
•Check / change interval durations on timer.
System Frequently
Stops / Restarts in
Automatic Mode
•HIGH / LOW setpoints inverted. •Ensure LOW setpoint is mapped to SP1 and
HIGH setpoint is mapped to SP2 on controller.
Controller Displays
“OPEN” Signal from
Dissolved Oxygen
Sensor Lost
•Dissolved oxygen sensor is damaged. •Verify no visible damage to sensor and that
LED on sensor body is lit when first powered
up..
•Replace sensor if damaged.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Manual
www.moleaer.com 18
Pump Performance Curves
The 25 Bloom uses SP-2 pump, the 50 Bloom uses the SP-3 pump, and the 150 Bloom uses the SP-12 pump.

MOLEAER BLOOM 1.5
NANOBUBBLE GENERATOR
Operation and Maintenance Manual
www.moleaer.com 19
Limited Warranty
Warranty
Moleaer warrants that the Goods will be free from defects
in material and workmanship for a period of 12 months from
delivery. Moleaer shall in no event be liable for defects or
damage attributable to modifications performed or repair
work done other than by Moleaer personnel or to abuse,
accident, catastrophe, force majeure event, shipment,
improper use including but not limited to circumstances
where pumps and / or compressors included in the Goods
are not operated in accordance with the original pump or
compressor manufacturer’s specifications, maintenance,
storage or application or any other external cause.
EXCEPT FOR ANY WRITTEN PERFORMANCE
WARRANTY THAT MOLEAER HAS EXPRESSLY
INCORPORATED IN THIS CONTRACT, MOLEAER
DISCLAIMS ALL OTHER WARRANTIES, WHETHER
EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NON-INFRINGEMENT.
Claims; Exclusive Remedy
Any warranty claim must be made to Moleaer in writing
within ten days of discovery of the alleged defect. After
obtaining prior written authorization from Moleaer, Buyer
shall return all allegedly defective Goods, freight pre-paid,
for examination by Moleaer. If Moleaer finds that the Goods
are defective and covered by the warranty, Moleaer’s sole
obligation shall be, at Moleaer’s option, to repair or replace
the Goods, or to refund the purchase price therefor, and to
reimburse Buyer’s reasonable shipping costs. Buyer shall
be responsible for all charges for handling of returned items
not found defective. The remedy set forth in this Paragraph
4 is Buyer’s sole and exclusive remedy for any breach of
warranty or claim related to the Goods other than pursuant
to any written performance warranty that Moleaer has
expressly incorporated in this Contract.
Limited Warranty
MOLEAER SHALL NOT BE MOLEAER SHALL NOT BE
LIABLE FOR SPECIAL, INDIRECT, CONSEQUENTIAL
OR INCIDENTAL DAMAGES, INCLUDING DAMAGES
FOR LOST OR PROSPECTIVE PROFITS OR OTHER
ECONOMIC DAMAGES, ARISING OUT OF OR RELATED
TO THIS CONTRACT OR THE GOODS. MOLEAER’S
TOTAL LIABILITY, WHETHER IN CONTRACT OR TORT
OR OTHERWISE, SHALL NOT EXCEED THE PORTION
OF THE PRICE PAID BY BUYER ALLOCABLE TO THE
GOODS GIVING RISE TO THE LIABILITY. THE
LIMITATIONS IN THIS PARAGRAPH WILL APPLY
NOTWITHSTANDING THE FAILURE OF ESSENTIAL
PURPOSE OF ANY LIMITED REMEDY.
This limitation shall not apply to claims for personal injury
directly caused by Moleaer’s willful or reckless acts.
PLEASE CONTACT MOLEAER AT 424-558-3567 IF YOU
HAVE ANY QUESTIONS, OR TO ASSIST WITH ANY
TROUBLESHOOTING AND FIELD INSTALLATION
QUESTIONS.
20800 BELSHAW AVENUE
CARSON, CA 90746 USA
[phone]
[e-mail]
www.moleaer.com