STH-8400 Owner's Manual · 2018-08-22 · STH-8400 Figure 1: STH-8400 Electrical Requirements - The standard 240VAC heating element requires 240VAC/1PH power source (Minimum 50 Amp

www.medoraco.com • 866 - 437 - 8076 •

[email protected]

O&M_STH_10049_20180822

STH-8400 Owner's Manual

Table of Contents

About Medora CorporationMedora Corporation combines knowledge and experience from across the water quality spectrum to help solve real-world problems. Whether in Lakes, Stormwater Retention Ponds, Raw Drinking-Source 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.

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Table of Contents

STH-8400 Owner's Manual

Contents 1

Safety 2

Requirements 5

Placement 6

Technical Specifications 8

Warranty 9

Customer Service 10

O&M_STH_10049_20180822

www.medoraco.com | 866 - 437 - 8076 | [email protected]

STH-8400

1 5/16” Hole Saw

Float Switch Lexel Sealant Tube

Kellem Grip Cord Strain Relief

Cord Fixture

STH-8400 Core Unit50’ Electric Cord

50’ Stainless Steel

Chain

Top of TankJunction Box Cord Seal

10050_20170913

Package Contents

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Safety

Carefully read safety information when you see any safety symbols:

Safety

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 acccidents can be avoided by using common sense and concentration on the job being done.

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Safety

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 compre-hensive listing of all details for all procedures required for placement, operation and mainte-nance. If you have a question about a proce-dure or are uncertain about any detail, Do Not Proceed. Please contact GridBee Customer Service at 866-437-8076 to speak to a repre-sentative.

IMPORTANT!!!

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. Usenecessary PPE when placing and servicing this unit.

ELECTRICAL HAZARDWARNING: 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 HazardWARNING: DO NOT REMOVE ANY FLOAT ASSEMBLY BOLTS OR PINS WHILE EQUIPMENT IS FLOATING IN WATER. EQUIPMENT MUST BE SECURELY SUPPORTED BEFORE PERFORMING SERVICE.

Safety

Laceration Hazard CAUTION: EDGES MAY BE SHARP AND CAUSE LACERATION IF PROPER CARE IS NOT USED.

Entanglement HazardWARNING: ENSURE THAT PERSONNEL ARE CLEAR OF THE ELECTRIC CORD AND CHAIN TO AVOID ENTANGLEMENT.

Thin Ice HazardWARNING: ICE SURROUNDING MACHINE MAY NOT SUPPORT WEIGHT, KEEP CLEAR OF THIN ICE.

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Safety

Safety

Permit-Required Conined Spaces

A conined space has limited openings forentry or exit, is large enough for entering and working, and is not designed for continuous worker occupancy. Conined spaces include underground reservoirs, ground storage tanks, elevated tanks, silos, manholes, and pipelines.

Conined Space Tips

• Do not enter permit-required conined spaces without being trained and without having a permit to enter. • Review, understand and follow employer’s procedures before entering permit-required conined spaces and know how and when to exit. • Before entry, identify any physical hazards. • Before and during entry, test and monitor for oxygen content, lammability, 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 Medora Corporation insists 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 mustbe followed (and not limited to) are:

• 1910.146 Permit-required conined 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 loor 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 TagoutWhen the On/Off switch is in the "ON" position, the mixer may start up at any time if not already operating. The mixer's On/Off 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/Off switch is to be used as the emergency stop.

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Requirements

Tank ConigurationSTH-8400

Heater Control Panel

Junction Box & Tank Penetration

GFCI Protected Source Power Tank Heater

Exterior Conduit and 3-Conductor Power Cable (2-Power + 1-Ground), 2-Conductor Signal Cable

STH-8400 Tank Heater suspended in the tank. Float switch suspended above the heating element.

Junction box & roof mount cable ixturesupplied with heater 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 linkCord ran through cord seal.

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Locate power source receptacle and lex con-duit termination at customer preferred location of mixer control panel

Terminate conduit using lex conduit with male thread end for panel mount

IMPORTANTIt is important to disinfect all components in contact with potable water. There may be ad-ditional decontamination procedures required, so it is important to understand what proce-dures are acceptable. Decontamination should be performed right before the unit is lowered through the hatch. The heater should be im-mersed in water shortly after having been de-contaminated to prevent corrosion caused by contact with chlorine or alternate disinfectant.

Pow

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PlacementSTH-8400

Hatch Requirement

A 12 inch (305 mm) diameter unobstructed hatch open-ing is required to deploy the heater.

Power Requirement

240 VAC, 50 amp GFCI protected service and means of quick power disconnect recommended

Figure 2: Top of Tank Junction Box

Figure 1: Top of Tank Junction Box Assembly

Placement

Placement Procedures

Step 1:Plan an appropriate location for the top of tank junction box. Verify the location is within arms reach of the hatch.

Step 2:Using supplied template, drill the (2), 1-5/16” holes spaced apart at 2-5/8” on center. Verify itment with the pre-assembled top of tank junction box.

Step 3:Apply an ample amount of Lexel sealant around the top and bottom of each tank pen-etration, to preserve protective coating.

Step 4:Insert the pre-assembled top of tank junction box. Assemble washers and brass nuts as shown in igure 1.

Step 5: Pull electric cable through Kellem strain relief, then through the penetration with 1” NPT inter-nal threads. Secure strain relief to SS tabbed washer with a quick link. See igure 1.

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Placement Cont.STH-8400

Figure 3: Typical Heater Placement

Placement

Placement Procedures

Step 6:Using the supplied weight, attach the weight to the loat switch cable, a minimum of 3.5 inches from the loat. See igure 3.

Step 7:Secure the loat switch cable above the heater, at a minimum of 3 foot above the heating ele-ment. This can be done by either attaching to heater retrieval chain or securing in the tank.

Step 8:Pull loat switch cable through Kellem strain relief, then through the 3/4” NPT internal threaded penetration. Secure strain relief to bottom of the penetration ixture using a quick link.

Step 9: Lower heater into the tank. Verify electric cable and retrieval chain are clear of obstructions.

Step 10:Connect the retrieval chain quick link to the tank penetration itting.

Cable weight

Float Switch

tether lengthmin. 3.5 inches

Mixer

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Technical Data Sheet

Technology Description- Designed to be placed into service through roof hatch without tank entry. Submersible, grid powered, tank heater for potable water tanks and reservoirs. Designed for continuous operation via thermostat control and can be installed through roof hatch without requiring tank entry.

STH-8400

Figure 1: STH-8400

Electrical Requirements - The standard 240VAC heating element requires 240VAC/1PH power source (Minimum 50 Amp Service), The STH-8400 unit draws approximately 35.0 Amps @ 240VAC / 60Hz. Nominal power con-sumption is 8400 Watts.

Subject to change without notice.

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 1-year parts and labor war-ranty, See Warranty Statement for details.

Minimum Water Depth - Unit must be fully submerged. Adjustable loat switch attached to heater allows for au-tomatic low water shut off to prevent damage to heater.

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.

Wiring - Includes 50 ft (15.2 m) of 8AWG and 50 ft (15.25 m) of submersible power cable to terminate within junction box at top of tank. Junction box and Control Box are included.

Materials of Construction - 316 stainless steel shell and hardware construction. STH-8400 has been con-structed using safe materials for contact with potable water.

50 ft (15.25 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.

Thermostat - Thermostat controls heater starter to allow for heat when temperature requires. Adjustable range of -30 to 90F, and remote bulb sensor.

Shipping Size / Weight • Crate 1 of 1: 72x16x16 in. / 125 lbs, Box 1: of 1: 24x21x10 in. / 21 lbs: Total shipment weight: 146 lbs

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GridBee STH Heaters. The GridBee Series STH heater is warranted to be free of defective parts, materials, and workmanship for a period of one year from the date of purchase. This warranty is valid only for use of the equip-ment in accordance with the owner’s manual and any initial and ongoing factory recommendations. This war-ranty 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, Me-dora 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 replace 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 thermostats, control panels, 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 re-place 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 MERCHANT-ABILITY 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 DAMAG-ES, 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.

GridBee STH Submersible Heater Limited Replacement Warranty:

1888_10051_20180205

Warranty

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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

Medora Corporation Service & Support

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Documents

STH-8400 Owner's Manual · 2018-08-22 · STH-8400 Figure 1: STH-8400 Electrical Requirements - The standard 240VAC heating element requires 240VAC/1PH power source (Minimum 50 Amp