IXOM GridBee GF1250PWc User manual
O&M_GF1250PWc_10110_20210922
GridBee GF1250PWc
Owner's Manual
Table of Contents
10014_20210413
GridBee GF1250PWc
Owner's Manual
Safety 1
Operation 4
Features 8
Maintenance 14
Electrical 21
Troubleshooting 23
Parts Diagram 26
Dimension Drawing 27
Appendix 28
Technical Specifications 29
Warranty 34
Customer Service 35
O&M_GF1250PWc_10110_20210922
Carefully read safety information when you see
any safety symbols.
Be sure you have read all installation, operation, maintenance and safety instructions before
you install, service or begin to operate this unit.
Accidents occur every year because of careless use of industrial equipment. You can avoid hazards
by following these safety instructions, and applying some ordinary common sense when operating or
servicing this unit.
Keep in mind that full operator attention and alertness are required when operating or servicing
this unit.
USE COMMON SENSE!! Most accidents can be avoided by using common sense and
concentration on the job being done.
Safety
1949_10036_20210428 O&M_GF1250PWc_10110_20210922 - 1
IMPORTANT!!!
Follow all federal and state laws in regards to
safety regulations of working at heights, conned
spaces, rescue, etc. as required by the U.S.
Department of Labor, Occupational Safety and
Health Administration. Use necessary PPE when
placing and servicing this unit.
Identify all possible hazards. Determine what
safeguards are needed and implement them.
Only you, the user, understand your product
and system characteristics fully. The ultimate
responsibility for safety is with you. Your
safety ultimately rests in your hands. Do
your part and you will enjoy safe, trouble free
operation for years to come. This instruction
manual is not intended to include a
comprehensive listing of all details for all
procedures required for placement, operation
and maintenance. If you have a question about
a procedure or are uncertain about any detail,
Do Not Proceed. Please contact Ixom
Watercare Customer Service at 866-437-8076 to
speak to a representative.
ELECTRICAL HAZARD
WARNING: THIS EQUIPMENT CONTAINS
HIGH VOLTAGE! ELECTRICAL SHOCK CAN
CAUSE SERIOUS OR FATAL INJURY. ONLY
QUALIFIED PERSONNEL SHOULD ATTEMPT
PLACEMENT, OPERATION AND MAINTENANCE
OF ELECTRICAL EQUIPMENT. REMOVE ALL
SOURCES OF ELECTRICAL POWER BEFORE
PERFORMING ANY SERVICE WORK TO THE
MACHINE. USE PROPER LOCKOUT TAGOUT
(LOTO) PROCEDURES TO ENSURE A SAFE
WORK ENVIRONMENT.
Rotating Hazard
CAUTION: KEEP BODY APPENANDAGES OR
LOOSE CLOTHING AWAY FROM EQUIPMENT
WHILE OPERATING. ENSURE EQUIPMENT IS
OFF BEFORE ATTEMPTING SERVICE.
Crush Hazard
WARNING: DO NOT REMOVE ANY FLOAT
ASSEMBLY BOLTS OR PINS WHILE EQUIPMENT
IS FLOATING IN WATER. EQUIPMENT MUST BE
SECURELY SUPPORTED BEFORE PERFORMING
SERVICE.
Laceration Hazard
CAUTION: EDGES MAY BE SHARP AND CAUSE
LACERATION IF PROPER CARE IS NOT USED.
Entanglement Hazard
WARNING: ENSURE THAT PERSONNEL ARE
CLEAR OF THE ELECTRIC CORD AND CHAIN TO
AVOID ENTANGLEMENT.
Thin Ice Hazard
WARNING: ICE SURROUNDING MACHINE MAY
NOT SUPPORT WEIGHT, KEEP CLEAR OF THIN
ICE.
Safety
1949_10036_20210428 O&M_GF1250PWc_10110_20210922 - 2
Permit-Required
Conned Spaces
A conned space has limited openings for
entry or exit, is large enough for entering and
working, and is not designed for continuous
worker occupancy. Conned spaces include
underground reservoirs, ground storage tanks,
elevated tanks, silos, manholes, and pipelines.
Conned Space Tips
• Do not enter permit-required conned spaces
without being trained and without having a
permit to enter.
•Review, understand and follow employer’s
procedures before entering permit-required
conned spaces and know how and when
to exit.
•Before entry, identify any physical hazards.
•Before and during entry, test and monitor for
oxygen content, ammability, toxicity or
explosive hazards as necessary.
•Use fall protection, rescue, air monitoring,
ventilation, lighting and communication
equipment according to entry procedures.
•Maintain contact at all times with a trained
attendant either visually, via phone, or by
two-way radio. This monitoring system
enables the attendant and entry supervisor
to order you to evacuate and to alert
appropriately trained rescue personnel to
rescue entrants when needed.
Refer to 29 CFR 1910.146 for complete
regulations set by OSHA. Refer to your state's
regulations if your state established and operates
their own safety and health programs approved
by OSHA.
Protect Yourself
It is important that you comply with all relative
OSHA and local regulations while installing
and performing any maintenance to the mixer
circulation equipment.
Key OSHA Compliance Standards that must
be followed (and not limited to) are:
• 1910.146 Permit-required conned spaces
• 1910.147 Lockout/Tagout
• 1926.500 Fall Protection
Fall Protection Tips
•Identify all potential tripping and fall hazards
before work starts.
•Look for fall hazards such as unprotected
oor openings/edges, shafts, open hatches,
stairwells, and roof openings/edges.
•Inspect fall protection and rescue equipment
for defects before use.
•Select, wear, and use fall protection and
rescue equipment appropriate for the task.
•Secure and stabilize all ladders before
climbing.
• Never stand on the top rung/step of a ladder.
•Use handrails when you go up or down stairs.
•Practice good housekeeping. Keep cords,
welding leads and air hoses out of walkways
or adjacent work areas.
Refer to 29 CFR 1926.500 for complete
regulations set by OSHA. Refer to your state's
regulations if your state established and operates
their own safety and health programs approved by
OSHA.
Lockout Tagout
When the On/O switch is in the "ON" position,
the mixer may start up at any time if not already
operating. The mixer's On/O switch can be
locked out by placing a pad lock thru the door latch
of the controller after the switch has been turned
to the "OFF" position. The On/O switch is to be
used as the emergency stop.
Safety
1949_10036_20210428 O&M_GF1250PWc_10110_20210922 - 3
The GridBee is designed to circulate water by
bringing water from below and sending it out
across the top in a thin layer causing a mixing
effect. The laminar layer ows outward radially, in
diverging “stream lines” from the distribution dish.
As it does, vertical ow is induced in between the
water being drawn below and the water above. At
the level of the ow intake, water is drawn from
all corners of the pond. As this lower layer of uid
makes its way inward with converging streamlines
to the GridBee, the water is forced upward, toward
the surface, providing gentle mixing,
de-stratication, and surface renewal.
The GF series GridBee requires a minimal amount
of AC grid-power. The grid provides power
to the onboard AC:DC power box and motor
controller that drive the brushless motor. The GF
Technology allows the GridBee to operate during
day and night while drawing minimal amount of
power from the grid.
During operation, a visible ow can be observed
coming off the distribution dish and spreading
outward. The motor and impeller is designed to
operate at the same full speed as the
solar-powered SolarBee models.
GridBee Flow Pattern
Flow Coming Off Distribution Dish
Operation
Operation
GF Series
10181_20210806 O&M_GF1250PWc_10110_20210922 - 4
STEP 1: Locate the Dish Assembly and Float Arm Assembly. (See Figure 1 & 2)
STEP 2: Attach the Float Arm Assembly to the Dish Assembly with provided bolts and nylock nuts.
(See Figure 3 & 4)
STEP 3: Repeat STEPS 1 and 2 for the other two oats.
IMPORTANT! The following pages give detailed instructions on how to assemble dierent portions of the
machine; however, the order in which the components are assembled and entered into the reservoir may
need to be altered based on the hatch size and whether the reservoir will be full or empty. For instance, the
hose assembly to the base of the machine can be performed on the reservoir exterior prior to lowering the
equipment inside if the hatch has a clear opening of at least 24 inch diameter (60cm). A hatch this size or
larger will allow the collapsible unit assembly to be installed without oat disassembly required. For smaller
hatches, the collapsible unit assembly will need to be broken down into multiple components and the hose
assembly will need to be performed inside the reservoir. The following order of operations listed is based on a
wet installation and small hatch opening.
1 2
3 4
Small Frame Assembly
SB/GF1250PWc
SB/GF1250PWc Assembly
Assembly Diagram
10312_20210810 O&M_GF1250PWc_10110_20210922 - 5
STEP 1: Locate one end of the hose section and place hose clamp over the end. Be sure that hose and
clamp are installed above the metal rib of the ange and then tighten hose clamp as tight as possible
to rmly secure hose. (See Figure 5)
STEP 2: Fasten Hose to bottom of machine by pushing hose up and all the way up above metal rib.
(See Figure 6)
STEP 3: On the other end of the hose place the other hose clamp over the end. Fasten hose to the intake
box past the metal rib of the ange and tighten hose clamp to rmly secure hose. (See Figure 7 & 8)
56
7 8
Small Frame Assembly
SB/GF1250PWc
SB/GF1250PWc Assembly
Assembly Diagram
10312_20210810 O&M_GF1250PWc_10110_20210922 - 6
MACHINE FULLY ASSEMBLED
Small Frame Assembly
SB/GF1250PWc
SB/GF1250PWc Assembly
Assembly Diagram
10312_20210810 O&M_GF1250PWc_10110_20210922 - 7
The GridBee utilizes high ecient brushless
motor technology which enhance its performance
through more ecient and durable components,
as well as easy component access, and a more
robust frame structure.
Electronics
Electrical Control Box - The electrical control
box is located on the exterior of the tank /
reservoir. The electrical control box converts
110VAC power to a clean 45VDC power source
which then operates the motor controller. The
control box also consists of a ground fault
interupter (GFI) switch to aid in protection of faulty
circuits or shorting of circuits. A durable 316SS
Cord Grip is used to handle all weather elements,
protecting the penetration of the electrical cable to
the motor controller on the inside of the tank.
Motor Controller - The motor controller is located
near the motor just below the top plate of the
Gridbee. The motor controller is sealed in line
with the electrical cord that runs to the brushless
motor.
The motor controller on the GridBee receives
power from the electronic control box located on
the exterior of the tank. This power is delivered
as 45VDC which is used to operate the brushless
motor at the commanded speed.
Due to the high frequency of communication
between the motor controller and brushless motor,
the two components need to be located close
to one another. This is the primary reason for
having the motor controller located directly on the
GridBee.
Electronic Control Box of an
Underground Reservoir
Motor Control Cord
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 8
All electronic connections on the GridBee
equipment should only be used for the inputs or
outputs that they are labeled and designed for. If
any of the leads going into the electronic controller
are disconnected, be sure when re-connecting to
place them in the proper position.
Wiring - All electric wiring includes corrosion-
resistant, industrial cords with molded, weather
and watertight connectors. The connectors
are indexed to prevent improper wiring. A
general electrical schematic can be found in the
Maintenance and Field Adjustment section.
Brushless Motor - The brushless motor is located
directly below the Top Deck. 4 bolts run down
through the Top Deck and into the housing of the
brushless motor fastening it onto the machine.
The brushless motor is built to be very durable.
The housing is constructed of casted aluminum.
The brushless motor runs very quietly and
smoothly. It does not require any maintenance. A
drive shaft extends through the bottom center of
the housing.
Shaft Coupling - The shaft coupling connects the
brushless motor drive shaft to the impeller shaft.
The shaft coupling is located directly below the
brushless motor.
The rotating assembly (motor, shaft coupling,
impeller shaft, impeller) can be removed from the
machine without disconnecting the shaft coupling.
Durable Wiring And Connectors
Brushless Motor
Brushless Motor With Shaft Coupling Attached
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 9
Impeller Assembly - The rotating assembly is
made up of the stainless steel impeller shaft,
stainless steel ag indicator, and stainless steel
impeller blades. The impeller assembly can be
removed by pulling 3 hair pins on the top plate.
CAUTION: KEEP BODY APPENDAGES
OR LOOSE CLOTHING AWAY FROM THE
IMPELLER ASSEMBLY WHILE THE MACHINE
IS OPERATING! IF MAINTENANCE IS
REQUIRED, BE SURE TO TURN THE GridBee
OFF FIRST!
The ag indicator is xed to the shaft and used as
a visual indicator of the impeller shaft's rotational
speed.
A food grade oil-lled, Teon freeze sleeve
secured with o-rings surronds the impeller shaft.
The freeze sleeve is free to rotate on the shaft. If
the water should freeze around the machine, the
freeze sleeve will stand still, frozen in by the ice,
but inside the plastic sleeve, the impeller shaft will
be turning.
The impeller blades are welded to a hub that is
fastened to the impeller shaft. The impeller is
designed to gently pump water from below and
can handle up to (3-inch) 7.6cm spherical solids.
The impeller bushing is a smooth collar that the
impeller shaft tip ts into. The impeller bushing
aligns and centers the impeller shaft within the
machine.
Turn GridBee O Before Performing Maintenance
Flag Indicator
Impeller Blades
Impeller Hub
3 Hairpins
Rotating Assembly
Top Plate
Impeller
Bushing
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 10
Distributor Dish / Hose / Intake Plate
The distributor dish, structural members, structural
fasteners, and mounting brackets are constructed
of stainless steel.
Distributor Dish - Near-laminar ow is achieved
by the GridBee due to its uniquely designed
distributor dish. The impeller rotates while sitting
within the lower half of the distributor dish. The
gentle water movement strengthens the induced
ow eect (water movement occuring between the
lower water layer entering the machine and the
upper water layer leaving the dish).
The top lip of the distributor dish is set
approximately 3/4- inch to 1-inch (2.0cm - 2.5 cm)
below the surface of the water to achieve best
ow results. The distributor dish depth is set at
the factory and should not need adjustment after
deployment.
Hose / Intake - The hose extends from below the
dish down to the oor of the reservoir. The intake
level is generally set just above the oor of the
reservoir. As the water level uctuates, the intake
remains at a xed level above the reservoir bottom
as the extra hose lays on the bottom. The intake
draws water horizontally into the hose.
The contact between the intake and the oor
prevents the machine from rotating or moving out
of place. The machine naturally has a very small
torque due to impeller rotation.
Hose With Bend Keeping Intake Stationary
Distributor Dish
Intake
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 11
Release Channel / Floats
The GridBee contains 3 release channels and
3 oats. The release channels allow vertical
positioning of the machine and the oats provide
buoyancy.
Floats - The oat is made from high density
Polyethylene. The oats are lled with a
Polystyrene closed-cell foam for long term
buoyancy. The stainless steel oat tube is molded
into the oat. The oat tube connects the oat
to the release channel and release tube. The
oat is shaped to hug the hose for installation
purposes allowing the machine to be installed in
a 24" square hatch. The oats have a uniquely
designed shape to:
• Minimize space when collapsed around
the hose.
• Minimize the interference with the water
ow on the surface coming o the
distributor dish.
Release Tube - The release tubes are constructed
of stainless steel. They directly connect the oats
to the central machine structure. Float
Release
Tube
Release Channel
Collapsed Float
Float
Float Tube
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 12
Float Assembly - The oat assembly connects to
the core unit in one location. There is no adjustment
necessary for setting the dish depth.
The oat assembly is bolted to the core unit of
the GridBee to allow the distributor dish lip to be
automatically set to the correct depth below the surface
of the water. The depth may vary depending on hose
length being supported by the machine and the amount
of hose resting on the bottom of the reservoir due to
uctuations of the water.
Each oat tube is connected to the central machine
structure with 1 bolt. Each oat is connected to
the oat tube by one pin. Each oat assembly is
constructed of the molded oat and oat tube. The
end of the oat tube contacts the core unit frame when
the oat is extended into place by means of boyancy
pressure when deployed into the water.
If the machine is resting in the bottom of an empty tank,
the GridBee will be supported against the oats resting
on the oor of the tank. Once water is brought back
into the tank, the machine will self deploy and begin to
oat. Float Connection Points
Bolt
3/4 in to 1 in
(2.0 cm - 2.5 cm)
Distance Between Distributor Dish And Water
Level
CAUTION: DO NOT REMOVE ANY FLOAT
ASSEMBLY PINS OR BOLTS WHILE THE
GridBee IS FLOATING IN THE WATER!
THE GridBee MUST BE RESTING ON THE
GROUND OR SAFELY SUPPORTED TO
RELIEVE THE FORCES ON THE FLOAT
ASSEMBLY STRUCTURES PRIOR TO
DISASSEMBLY! FAILURE TO FOLLOW
THIS WARNING COULD LEAD TO SINKING
THE GridBee, SERIOUS INJURY!
Eye Loop
Features
Features
GF1250PWc
10289_20210806 O&M_GF1250PWc_10110_20210922 - 13
The performance of the Machine has proven
to increase tremendously when its operator
understands the operation of the machine
and knows how to carry out eld adjustment
procedures.
In most cases, the operator have can perform
routine checkups and eld adjustment procedures
on the Machine, by pulling the Machine to the
hatch. A large, expensive boat isn't necessary.
When tank entry is required, an inatable raft/boat
(approximately 6 ft) is deployed inside the tank.
It is extremely important that safety comes rst
every time the Machine is inspected or having
maintenance procedures performed. It is strongly
encouraged that anyone working on or near the
machine follow these rules:
Wear a personal oatation device
Stay focused and alert
Turn the Machine off before working on it
Stay clear of parts while they are moving
To turn the Machine motor off, turn the On / Off
switch to the off position. To completely power
down the digital controller, remove all power
sources in the proper sequence.
ON / OFF
SWITCH
DIGITAL
CONTROLLER
Maintenance
Maintenance and Field Adjustment
SB / GF PW Series Mixers
10237_20210729 O&M_GF1250PWc_10110_20210922 - 14
Under some circumstances, it may be necessary
for the customer to remove or transport the
machine from the reservoir. For potable water
applications, Ixom strongly encourages the
customer to consult with our Customer Support
Team before attempting to remove a potable
water machine. The machine is designed to be
suspended by three points that are reinforced.
Rigging may need to be made up to allow
connection to all three rigging points. The design
calls for all three points to be used in order to
support the weight of the machine and keep it
balanced once suspended.
500PWc
CAUTION: DO NOT REMOVE ANY FLOAT
ASSEMBLY PINS OR BOLTS WHILE THE
MACHINE IS FLOATING IN THE WATER!
THE MACHINE MUST BE RESTING ON
THE GROUND OR SAFELY SUPPORTED
TO RELIEVE THE FORCES ON THE FLOAT
ASSEMBLY STRUCTURES PRIOR TO
DISASSEMBLY! FAILURE TO FOLLOW
THIS WARNING COULD LEAD TO SINKING
THE MACHINE, OR CAUSE SERIOUS
INJURY!
MODEL MAY VARY
1250PWc
Large Frame Machines
Maintenance
Rigging Points
SB / GF Series Small Frame Mixers
10415_20210730 O&M_GF1250PWc_10110_20210922 - 15
Distribution Dish Level Setting
The machine distributor dish depth in the water is a
key factor in maintaining the near-laminar ow of water
coming off the machine.
The distribution dish level setting is measured from
the top lip of the dish up to the water surface. For the
Small Frame machine, set the depth level according to
the following table:
Model Depth - Inch Depth - cm
500PWc 1 1/2 - 2 3.8 - 5.0
1250PWc 3/4 - 1 2.0 - 2.5
Distribution Dish Level Adjustment
TOOLS RECOMMENDED:
No tools are necessary.
The collapsible machine model was designed specially
for potable tanks and reservoirs where the hatch size
is too small for conned space entry. Therefore, the
oat assembly were designed to set the machine in the
correct depth of water when the machine is deployed.
There are no adjustments that needed for setting the
dish depth. After the reservoir has been drained and
relled, the machine will automatically redeploy itself. It
is a good idea to visually check the machine to conrm
that the machine had properly deployed itself
in the case of the tank being drained and relled.
Refer to table
to the left.
Distance Between Distributor
Dish And Water Level
Dish
Level
Water
Level
Water Level Refer to table upper left.
Release
Channel
Refer to table
to the left.
Model may
vary
Maintenance
Small Frame Dish Levels
SB / GF Series Small Frame Mixers
10414_20210730 O&M_GF1250PWc_10110_20210922 - 16
Impeller Rotational Speed Check
During clear skies and good sunlight weather
conditions, the drive system of the unit should
operate:
1) At a rotational speed between 55 and 85
revolutions per minute (rpm).
2) In a clockwise direction when looking down at
the impeller.
Checking Rotational Speed
TOOLS RECOMMENDED:
Watch or Stopwatch
STEP 1: Locate the ag indicator on the impeller
shaft.
STEP 2: Start the stopwatch or mark a starting
point on the watch. Immediately begin counting
each full revolution of the ag indicator (starting
with "ZERO", "ONE", "TWO", etc) for a time of less
than or equal to 1 minute and at least 20 seconds.
This step is easier with two people, one counting
revolutions and the other keeping track of the time
expired.
STEP 3: Quit counting revolutions and immediately
observe how much time has expired in seconds.
STEP 4: Use the following equation to calculate
rotational speed in rpms:
Example: 30 Revolutions were counted in a time period
of 30 seconds.
RPM = (30 revolutions X 60) / (30 seconds) = 60
Impeller Rotational Speed = 60 RPMs
(# Revolutions Counted X 60)
# Seconds Expired
DIVIDED BY
Revolutions Per
Minute (RPM)
=
Clockwise Rotation When Looking Down
Flag Indicator Section of Impeller Shaft
Flag Indicator
MODEL MAY VARY
Maintenance
RPM Check
SB/GF Series
10413_20210727 O&M_GF1250PWc_10110_20210922 - 17
Impeller Assembly Removal
In the case that there is buildup below the impeller that
cannot be reached, the impeller assembly can easily be
removed.
TOOLS RECOMMENDED:
Elbow High Rubber Gloves
Garbage Bag
STEP 1: With machine off locate the 3 fasteners on the
top plate that attach it to the frame and remove them.
STEP 2: Firmly grasp the top plate and pull straight up on
the impeller assembly.
STEP 3: Observe and clean any debris located on the
bottom of the impeller.
STEP 4: Observe and clean any debris located down
in the dish where the impeller rests. Place the debris
into a garbage bag and remove from pond to prevent it
from going through machine again. Follow all local
laws and regulations when disposing of any
materials collected.
STEP 5: Once clean, place impeller assembly back
in place. Be sure bottom of impeller shaft ts into the
bushing in the dish and that the 3 top plate holes are
aligned with the top of the frame.
STEP 6: Replace the 3 fasteners that were removed
in Step 1.
STEP 7: Turn machine back on.
1250PWc Impeller Assembly
500PWc Impeller Assembly
Turn Machine Off Before
Performing Maintenance
CAUTION: TURN MACHINE OFF BEFORE WORKING NEAR IMPELLER! WEAR PROTECTIVE
GLOVES AND BE CAUTIOUS OF SHARP LEADING EDGES ON IMPELLER BLADES WHILE
CLEANING! FAILURE TO FOLLOW THESE WARNINGS COULD LEAD TO INJURY!
Top Plate
Top Plate
Maintenance
Impeller Assembly Removal
SB / GF Series Small Frame Mixers
2089_10245_20210730 O&M_GF1250PWc_10110_20210922 - 18
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