120V Single Phase Operation &

GS-12
120V Single Phase
Operation & Maintenance Manual
www.medoraco.com
• 866 - 437 - 8076 •
info@medoraco.com
O&M_GS12_120V-1PH_20180227
Table of Contents
GS-12
120V Single Phase
Operation & Maintenance Manual
Table of Contents
Safety Instructions
1
Package Contents
2
Machine Requirements
3
Top of Tank Junction Box
4
Mixer Placement
7
Final Checklist
9
Troubleshooting
10
Technical Specifications
12
Warranty
13
Customer Service
14
About Medora Corporation
Medora Corporation combines knowledge and experience from across the water quality spectrum
to help solve real-world problems. Whether in Lakes, Stormwater Retention Ponds, Raw DrinkingSource Reservoirs, Water Treatment Plants, Potable Storage Tanks, or Wastewater Treatment
Processes,
equipment continues to be at the forefront as the #1 world
leader for in-situ water body treatment.
1910_20170390
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O&M_GS12_120V-1PH_20180227
Safety
Safety
GS Series
IMPORTANT
YOU MUST COMPLETELY READ
AND FULLY UNDERSTAND THESE
INSTRUCTIONS BEFORE
INSTALLING, OPERATING, OR
SERVICING THIS UNIT.
Be sure you have read all placement, operation, maintenance, and safety instructions before you 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 concentrating on the job being done.
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.
1911_10002_201706179
Electical 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.
Entanglement Hazard
WARNING: WHEN LOWERING OR
RAISING THE MACHINE, BE SURE THAT
YOU AND OTHERS ARE CLEAR OF THE
ELECTRIC CORD AND CHAIN TO AVOID
ENTANGLEMENT!
IMPORTANT!
Disinfect all components in contact with potable
water. There may be additional decontamination
procedures required. It is important to understand
what decontamination procedures are acceptable.
Decontamination should be performed right
before the unit is lowered through the hatch. The
mixer should be immersed in water shortly after
having been decontaminated to prevent corrosion
caused by contact with chlorine or alternate
disinfectant.
IMPORTANT!!!
Please follow all federal and state laws in regards
to safety regulations of working at heights, conined spaces, rescue, etc. as required by the U.S.
Department of Labor, Occupational Safety and
Health Administration. Please use necessary PPE
when placing and servicing this unit.
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O&M_GS12_120V-1PH_20180227 - 1
Package Contents
GS Series
GS Core Unit
75’ or 150’ Electric Cord
(Not Pictured)
Cord Fixture
Kellem Grip
Cord Strain Relief
Top of Tank
Junction Box
1926_20170404
Chain Grab Tools
1 5/16” Hole Saw
Lexel
Sealant Tube
75’ or 150’
Stainless Steel
Chain
Cord Seal
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O&M_GS12_120V-1PH_20180227 - 2
Requirements
Requirements
GS Series
Hatch Requirement
Power Requirement
A 12 inch (305 mm) diameter hatch opening is required
to it the GS Mixer through.
120 VAC, 20 amp GFCI protected service and means
of quick power disconnect recommended
Junction Box & Roof Mount Cable
Fixture
Supplied with GS Mixer and located
within arms reach of the hatch.
Terminate conduit using lex
conduit with male thread end for
panel mount
Exterior Conduit and 3-Conductor Power Cable (2-Power
+ 1-Ground)
Mixer Control Panel
Locate power source lex conduit termination at customer
preferred location of Mixer Control Panel
Terminate conduit using lex
conduit with male thread end for
panel mount
120vAC, 20Amp
GFCI Circuit Breaker
Figure 1: Typical GS Placement
1912_20170330
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O&M_GS12_120V-1PH_20180227 - 3
Top of Tank Junction Box
Steel Roof
GS Series
1
General Notes
1.
2.
3.
4.
5.
6.
7.
8.
Top of tank junction box.
Cord seal fitting.
Brass nut.
Plastic seal washer with Lexel.
Tank penetration fitting.
A 1-5/16 dia. hole to be drilled into
tank roof. Sealed with Lexel to
protect from corrosion.
Quick link for connecting retrieval
chain and kellem grip to
penetration fitting.
Kellem grip to support cable weight
and to provide strain relief.
2
3
4
4
3
5
4
6
4
3
7
8
Alternative Method:
Penetration through hatch neck
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O&M_GS12_120V-1PH_20180227 - 4
Top of Tank Junction Box
Concrete Roof
GS Series
General Notes
1.
2.
3.
4.
5.
6.
7.
8.
9.
Top of tank junction box.
Eye-bolt, epoxied into hatch neck,
for retrieval chain and kellem grip.
Kellem grip.
Bolts, epoxied into hatch neck to
secure concrete penetration fitting.
Concrete penetration fitting.
Small bores drilled into hatch neck
the length of the bolts, 1/2 dia.
typical, filled with concrete epoxy.
Follow concrete epoxy
manufacture s preparation and
installation guidelines.
A 3/4 dia. minimum to 1-1/4 dia
maximum hole drilled through
hatch neck for electrical cord.
Junction box mounted to existing or
new structure. Structure not
included.
3/4 NPT electrical conduit
connection: conduit to juction box
not included.
1
2
4
5
6
7
3
8
9
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O&M_GS12_120V-1PH_20180227 - 5
Top of Tank Junction Box
Aluminum Geodesic Dome Roof
GS Series
1
General Notes
1.
2.
3.
4.
5.
6.
7.
Cord seal fitting.
Brass nut.
Plastic seal washer with Lexel.
Top of tank junction box.
Penetration fixture.
Aluminum geodesic dome panel.
Aluminum geodesic dome batten
bar.
8. Support I-beam.
9. Quick link.
10. Kellem grip.
11. A 1-5/16 dia. hole drilled through
panel and sealed with Lexel.
Locate penetration within arms
reach of an access point.
12. Eyebolt drilled through support
I-beam to support kellem grip and
retrieval chain. I-bolt not included.
2
4
3
3
5
7
6
2
3
11
3
2
12
8
9
9
10
1914_20170828
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O&M_GS12_120V-1PH_20180227 - 6
Placement
Floor Coniguration
GS Series
Junction box & roof
mount cable ixture
supplied with GS mixer
and located within
arms reach of the
hatch.
Terminate conduit
using lex conduit with
male thread end for
panel mount
Chain and cable
attached to quick link
Cord ran through cord
seal.
Exterior Conduit and 3-Conductor Power
Cable (2-Power + 1-Ground)
GS mixer resting on tank loor under hatch.
Retrieval chain attached to mixer. Slots
aligned parallel with line extending from center of tank to tank wall.
Locate power source receptacle and lex conduit termination at customer preferred location
of mixer control panel
Terminate conduit using lex conduit with male
thread end for panel mount
IMPORTANT
It is important to disinfect all components in contact
with potable water. There may be additional decontamination procedures required, so it is important to
understand what procedures are acceptable. Decontamination should be performed right before the unit
is lowered through the hatch. The mixer should be
immersed in water shortly after having been decontaminated to prevent corrosion caused by contact
with chlorine or alternate disinfectant.
GFCI Protected
Source Power
1916_10006_20170628
Mixer Control Panel
Junction Box &
Tank Penetration
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GS Mixer
O&M_GS12_120V-1PH_20180227 - 7
Placement
Suspended Coniguration
GS Series
Cord ran through
penetration itting
and cord seal.
Suspended Coniguration
The suspended coniguration is primarily used
on tanks without a lat bottom. This method of
installation is different with aluminum roofs or
geodesic domed roofs.
Installation Procedures
Step 1:
Attach the retrieval chain to the GS mixer at
the pre-located quick link. Tighten the quick
link with a wrench/pliers. Plan out a safe
procedure and hoist the GS Mixer to the top
of the tank near the hatch opening. Use the
chain and submersible cable attached to the
GS Mixer for lifting and supporting the weight.
Keep clear of chain and electric cord to avoid
entanglement.
Chain and Kellum
Grip attached to
quick link on
penetration itting
Chain Connected
to Mixer
Step 2:
Tie off the tail end of the retrieval chain and
electric cord strain relief to the quick link at the
bottom of the tank penetration itting.
Figure 1: Picture caption goes here!
Step 4:
Pull the retrieval chain up until it is taught, then
mark off the desired distance the GS Mixer is
to be suspended above the loor, placing the
quick link that desired distance down the retrieval chain below the tank penetration itting.
Step 5:
Slowly pull up the GS Mixer and connect the
quick link to the tank penetration itting.
1916_10006_20170628
Mixer suspended
near tank loor
IMPORTANT
It is important to disinfect all components
in contact with potable water. A common
practice is to use a minimum 200ppm
chlorine or alternate disinfectant solution
in water to spray all components that will
contact the drinking water. There may be
additional decontamination procedures
required, so it is important to understand
what procedures are acceptable. Decontamination should be performed right before the unit is lowered through the hatch.
The mixer should be immersed in water
shortly after having been decontaminated
to prevent corrosion caused by contact
with chlorine or alternate disinfectant.
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O&M_GS12_120V-1PH_20180227 - 8
Final Checklist
Final Checklist
Installation Checks
Before starting the GS Series mixer a few checklist
items are recommended to conirm the installation is
correct.
Installation Checks
Check
Is the mixer placed correctly with slots facing up? (Placement)
Is the mixer retrieval chain connected securely? (Placement)
Is the kellum grip supporting the weight of the cord? (Placement)
Is the cord ran through the cord seal in the top of tank junction box? (Placement)
Is the Tank Penetration itting sealed with Lexel? (Top of Tank Junction Box)
Are the top of tank junction box splices correct and each splice individually sealed to protect from
corrosion? (Top of tank Junction Box)
Is the ield wiring correct? (Requirements)
Is The Mixer submerged in at least 2’ (0.75m) of water?
Pre Operation Checks
Continuity Check
Reading
Black to White:
White to Ground:
Black to Ground:
Source Voltage Reading
Operation Checks
The following checklist items are recommended to
conirm proper operation.
Operation Check (While Mixer is Running)
Reading / Observation
Source Voltage Reading
Amperage Reading
Flow Check Auditory
Flow Check Visual
1931_10003_20170607
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O&M_GS12_120V-1PH_20180227 - 9
Troubleshooting
Troubleshooting
GS Series
Voltage (ṽ)
To measure the voltage follow these steps.
Contactor
1. Set the voltmeter on Volts AC.
2. Place the positive probe on the black wire and the
negative probe on the white wire on the top of the
contactor (source side).
3. Record the reading.
Amperage (Ã)
To Measure the Amperage follow these steps.
1. Use a clamp type ammeter, set to Amps AC.
2. Clamp around the black wire on the bottom of the
contactor (load side). Marked Load 1 (L1).
3. Record the reading with mixer turned on.
Incoming
Power
Figure 1: SCADA Control Panel
Ohms (Ω)
To Measure the Ohms follow these steps.
1. Turn off the circuit breaker feeding the control
panel and follow lock out tag out procedures.
2. Measure the Voltage to conirm that the power is
removed.
3. Disconnect the black and white wires from the
bottom of the contactor (load side). Marked Load 1
(L1) and Neutral (N).
4. Set the Voltmeter to Ohms.
5. Place the positive probe on the black wire and the
negative probe on the white wire that were disconnected.
6. Record the reading.
Contactor
Incoming
Power
Depending on the length and gauge of wires to the
mixer the ohms should be approximately 1-4 Ohms.
Troubleshooting Information
Serial Number
Location Name
Figure 2: Disconnect Control Panel
Problem
Possible Cause
Mixer Intermittently Tripping
Circuit Breaker
Multiple GFCI on Circuit
Source Power Fluctuation
Distributor Name
(if applicable)
Mixer Quickly Tripping Circuit
Breaker
Short to Ground
Locked Rotor on Motor
Voltage Reading
Mixer Not Operating but Circuit
Breaker not tripped
Loose or Loss of Connection
Mixer Making Loud Noise
Motor Bearing Failure
Impeller Misalignment
Tank Name
Amperage Reading
Ohm Reading
1930_10004_20171121
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O&M_GS12_120V-1PH_20180227 - 10
Troubleshooting
Troubleshooting
GS Series
GS Mixer End Plate Removal and Impeller Visual
Figure 1: End Plate Removal
Step 1
Isolate power to the GS mixer to prevent it from turning
on during inspection. The mixer must be off to perform
this inspection safely.
Tools Needed
1. Electric Drill
2. #3 Phillips drill bit
Step 2
Remove white end plate on the end of GS Mixer. The
side that should be removed is the side without the
screen on it. You will ind four (4) screws that will need
to be removed in order for the end plate to become free
from the mixer. (See Figure 1)
Impeller
Step 3
Visually inspect the impeller for debris or build up.
You should be able to move the impeller freely with no
resistance. (See Figure 2)
Step 4
Remove any debris if necessary.
Step 5
Place the white end plate back on the GS Mixer,
ensuring to line up the notch on the top side of the
mixer. The four screws that were removed in Step 2
should be put back in place at this point as well.
1930_10004_20171121
Figure 2: Impeller View
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O&M_GS12_120V-1PH_20180227 - 11
Technical Data Sheet
GS-12
Technology Description- GridBee® electric submersible water circulation equipment, designed for continuous
operation. Constructed with T316 stainless steel shell and safe materials for contact with potable drinking water.
Designed to be placed into service through roof hatch without tank entry.
Materials of Construction - T316 stainless steel shell
and hardware construction. GridBee® submersible
mixers are constructed using safe materials for contact
with potable water. See certiications section below.
75 ft (22 m) or 150 ft (44 m) of T316 stainless steel
retrieval chain included for machine installation and
retrieval without requiring tank entry.
Minimum Access Opening - Machine can be placed
through 12 inch (30 cm) diameter opening.
Minimum Water Depth - At depths below 2 feet (0.6
meters), the machine should be shut off to prevent
damage.
Figure 1: GS-12
Intake - Intake draws water in a horizontal layer within 8 inches (15 cm) of the tank or reservoir loor. Chlorine
boost connection point on machine for adapting to 1/2” (13mm) hose for fast chlorine dispersion during in-reservoir boosting.
Electrical Requirements - 120VAC motor requires 120VAC/1PH power source outlet (minimum 20 Amp service), The GS-12 draws approximately 11.0 Amps @ 120VAC / 60Hz. Nominal power consumption of 800 Watts.
Motor - 1/2 HP stainless steel submersible, designed for continuous operation, low power requirement, direct drive, no gearbox and no lubrication schedule required. See certiications section below.
120VAC/1PH standard, other voltages available as special order.
Wiring - Includes either 75 ft (22 m) of 12AWG or 150 ft (44m) of 10AWG submersible power cable to
terminate within junction box at top of tank. Junction box included.
Sealed Penetration Fitting - T316 stainless steel tank itting and cord grip included for sealed cord entry
through tank roof. Not designed as a submersible penetration.
Optional Accessories - (1) Portable Chlorine Boost Hose and Boost Pump System, (2) Dual Injection Kit, (3)
Control and SCADA Panel
Shipping Size / Weight
• 75 ft unit - Box 1 of 2: 44x16x12 in. / 88 lbs, Box 2: of 2: 17x13x8 in. / 25 lbs: Total shipment weight: 113 lbs
• 150 ft unit - Box 1 of 2: 44x16x12 in. / 127 lbs, Box 2: of 2: 17x13x8 in. / 41 lbs: Total shipment weight: 168 lbs
Certiications - Medora Corporation's potable water products are certiied to ANSI/NSF Standard 61, and 372 for
lead-free content. Learn more at: www.medoraco.com/std61
Life / Maintenance / Warranty - 25-year design life, limited maintenance. Limited 5-year parts and labor warranty, See Warranty Statement for details.
Subject to change without notice.
1572_20170808
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O&M_GS12_120V-1PH_20180227 - 12
Warranty
GridBee GS Submersible Mixer Limited Replacement Warranty:
GridBee GS Mixers. The GridBee Series GS mixers are warranted to be free of defective parts, materials, and
workmanship for a period of ive years from the date of purchase. This warranty is valid only for use of the equipment in accordance with the owner’s manual and any initial and ongoing factory recommendations. This warranty is limited to the repair or replacement of defective components only and does not apply to normal wear and
tear. If the factory’s service crews performed the original on-site placement and startup, then this warranty also
includes labor. Where labor is included, in lieu of sending a factory service crew to the site for minor repairs, Medora Corporation may choose to send the replacement parts to the owner postage-paid and may pay the owner a
reasonable labor allowance, as determined solely by Medora, to install the parts. There is no liability for consequential damages of any type. The warranty that is submitted and provided with the purchased equipment is the
valid warranty.
GridBee control panels, cold weather hose kits, air compressors and any optional accessories. These
items are considered “buyout” items for Medora Corporation, and as such include a warranty against defects in
material and workmanship for one year from the date of purchase. This warranty covers parts only, not labor.
Parts that are determined by Medora Corporation to be defective in material or workmanship under normal use
during the one year warranty period will be repaired or replaced. Shipping charges are the responsibility of the
customer.
Terms applicable to all equipment. There is no liability for any consequential damages of any type, or to replace items that wear out from “normal use” in Medora’s sole determination. Equipment warranties are valid only
for equipment that is used in accordance with the owner’s manual, and consistent with any initial and ongoing
factory recommendations. Medora Corp.’s warranties change from time to time; only the exact warranty in effect
when the equipment was purchased, as provided with the equipment, is valid.
EXCEPT AS STATED ABOVE, MEDORA CORPORATION AND ITS AFFILIATES EXPRESSLYDISCLAIM ANY
AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES ON PRODUCTS
FURNISHED HEREUNDER, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Please consult your state law regarding this warranty as certain states may have legal provisions affecting the
scope of this warranty.
IN NO EVENT WILL MEDORA CORP. OR ITS AFFILIATES BE LIABLE FOR ANY DAMAGES CAUSED BY
FAILURE OF BUYER TO PERFORM BUYER’S RESPONSIBILITIES OR FOR FOLLOWING MEDORA CORP.
ADVICE. IN NO EVENT WILL MEDORA CORP. OR ITS AFFILIATES BE LIABLE FOR ANY LOST PROFITS OR
USE OR OTHER PUNITIVE, SPECIAL, EXEMPLARY, CONSEQUENTIAL, INCIDENTAL OR INDIRECT DAMAGES, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, WHETHER OR NOT MEDORA CORP. HAS BEEN
ADVISED OF SUCH DAMAGES, OR REASONABLY COULD HAVE FORESEEN THE POSSIBILITY OF SUCH
DAMAGES, OR FOR ANY CLAIM AGAINST BUYER BY ANOTHER PARTY.
1684_10018_20180205
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O&M_GS12_120V-1PH_20180227 - 13
Service & Support
Medora Corporation Service & Support
Medora Corporation employs qualiied highly trained Service and Placement Technicians certiied
to perform the necessary tasks required to install or remove SolarBee and GridBee circulation
equipment.
Medora's specialized Service and Placement Technicians are trained in Conined Space, Fall
Protection, and other related subjects as required by OSHA to perform the necessary work to install
or remove SolarBee and GridBee equipment, and are knowlegeable in the regulations and standards
of OSHA.
If you feel the need to service your SolarBee or GridBee circulation equipment, please contact
Medora's Customer Service Department at:
+1 866 437 8076
10001_20180222
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O&M_GS12_120V-1PH_20180227 - 14
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