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Warnings 

 

 

© 2012 Little River Research & Design; updated July 2018 

 

YOU MUST READ AND UNDERSTAND THESE WARNINGS 

BEFORE USING THE EMRIVER MODEL 

 

 

The Emriver model is very heavy when filled with water and sediment.  A collapse of the 

model’s supports could severely injure or kill a person.  Be absolutely sure you understand 

how to use the supports. 

 

Use only the supports provided with the Emriver geomodel.  Despite weight-bearing claims, no 

standard production sawhorse is strong enough to safely support the model. Sawhorses and 

folding tables can collapse under dynamic or side loading. 

   

Check all fittings on the aluminum supports before each use to be sure they are secure. 

   

When setting up the box, the supports must be laterally level and aligned.  They must also be 

aligned with the proper support point underneath the box.  Otherwise the box could warp or 

collapse when loaded. 

   

Never set the box up on a surface with a slope exceeding 8% (a 7-inch drop in 7 feet). 

 

Never use more than 27 gal (102 L) of water in the model.  Using more than the maximum 

amount of water and sediment could cause the box or supports to collapse.   

 

Never use more than the provided 150 lb (68 kg) of sediment in the box, and do not place any 

heavy objects in the box. 

 

Never allow people to sit or stand on or in the box.  Never get underneath the loaded box. 

 

Use only the pump and power supply provided with the Emriver Em2.  Be certain to connect 

the power supply to a properly grounded outlet.  Always use the Ground Fault Circuit 

Interrupter (GFCI) provided with the Emriver model (see Figure 18), and be sure to read the 

manual that accompanies the GFCI.   

 

When using a 12-volt battery to power the model, always use the Emriver Battery Adapter 

from Little River Research & Design.  Never bypass the fuses. 

 

When powering the model with a 12-volt battery, be sure you understand the dangers 

associated with charging and using lead-acid batteries, and consider using safer spill-proof 

batteries. 

 

The box should only be used for its intended purpose as stated herein. 

 

If any part of the box or pumping system is damaged, if you have any doubts about the 

electrical or structural safety of the model, or if you do not understand these directions, do not 

use this model. 

Содержание Em2

Страница 1: ...model Using more than the maximum amount of water and sediment could cause the box or supports to collapse Never use more than the provided 150 lb 68 kg of sediment in the box and do not place any hea...

Страница 2: ...2 2012 Little River Research Design updated July 2018 This page was intentionally left blank...

Страница 3: ...klist 6 Assembly and Operation 7 Setup checklist 21 Disassembly Transport and Storage 22 Maintenance and Care 23 Demonstrations and Experiments 24 Specifications 26 All contents copyrighted 2012 Littl...

Страница 4: ...water and could be dangerous if not properly supported assembled and operated Therefore it is important that you read understand and abide by all the instructions and warnings in this manual to avoid...

Страница 5: ...Introduction 2012 Little River Research Design updated July 2018 5 Figure 2 Power supply included with the Emriver Em2 model shown attached to the downstream support...

Страница 6: ...vegetation Scrapers for moving media Blue and green dye Paper towels and mop Shim materials Hand level Plastic buckets for sediment and water Garden hose Scraper trowel Notebook Household bleach Smal...

Страница 7: ...Figure 3 The supports must be both level and parallel The supports should be set up so that the crossbars are 49 in 1 25 m apart and aligned as shown in Figure 3 to prevent damage to the box Figure 3...

Страница 8: ...his opening lies at the downstream end The Emriver supports have a difference in height of about 3 in 76 mm yielding a box slope of 6 The slope of channels in the box will be determined by the positio...

Страница 9: ...d last for many uses As needed apply a small amount to restore smooth movement This silicone grease may be found at most hardware stores and is typically used for waterproofing electronics and o rings...

Страница 10: ...be supported at the two reinforced ribs and nowhere else See Figure 6 Figure 6 Support ribs on the underside of the box indicated with arrows are areas where the box must be supported CAUTION The supp...

Страница 11: ...on them Note Gaps of more than 0 25 in 6 mm between the box s support ribs and the support crossbars indicate that the supports are NOT properly aligned Figure 7 Lift the box onto the supports It is...

Страница 12: ...r beneath the support at the downstream end STEP 5 Position the pump Attach one end of the tubing onto the arm of the pump Place the pump lying on its side in the bottom of the reservoir keeping the w...

Страница 13: ...l 102 L of water WARNING Using more than 27 gal 102 L of water could damage the box or cause it to collapse Do not exceed this volume and do not start the pump until you have filled the reservoir and...

Страница 14: ...Figure 13 The outlet should snap into place Figure 13 Align the mushroom fasteners on the flow outlet with those on the inside of the box at the upstream end Snap the fasteners together to secure the...

Страница 15: ...the box STEP 9 Position the Energy Dissipater Unit Place the Energy Dissipater Unit EDU beneath the flow outlet The flow outlet opening should line up with the innermost cylinder of the EDU The EDU s...

Страница 16: ...te in the sediment trap The rate at which the sediment trap fills is highly variable depending on activity in the box When the sediment trap becomes full use the perforated scoop included with the Emr...

Страница 17: ...ck power supply to the leg of the downstream support Connect the power cord to the Ground Fault Circuit Interrupter GFCI US users only If you are using an extension cord connect the extension cord to...

Страница 18: ...roller to the downstream end of the box Connect the pump to the controller using the gray blue and orange connectors note there is one red tab that is not a connector Then connect the controller to th...

Страница 19: ...n the circuit board round green light If it is lit check the connection between the controller and the pump Also check for any obstructions or clogged filters Expel all air from pump and hose If the f...

Страница 20: ...r Em2 model has been assembled according to the instructions in this manual it is ready for use Figure 22 is a conceptual chart that shows flow pathways of water and electricity through a properly ass...

Страница 21: ...an 0 25 in 6 mm between the support crossbars and the box support ribs 7 Place the reservoir under the standpipe and place the pump in the reservoir lying on its side Check the pump filter for fine de...

Страница 22: ...remaining water must be drained from the sediment This water can take several hours to drain Pile the media at the upstream end of the box to aid drainage You can also remove the standpipe to speed al...

Страница 23: ...ler after each use by disconnecting the pump from the controller and disconnecting the controller from the power supply Do not use solvents which may dissolve or weaken the plastic tubing If the tubin...

Страница 24: ...ser level can be used to explore the relative elevations of the upper end of the channel and the standpipe The modeling media is manufactured within a range of specifications and its specific gravity...

Страница 25: ...e realistic characteristics Remember that your modeled channels should be in a near equilibrium condition in order to show the effects of disturbances The guidelines and videos at the following places...

Страница 26: ...t particle size 0 02 0 09 in 0 5 2 1 mm Box box weight approx 38 lb 17 5 kg box dimensions 77 x 33 x 5 inches 1 96 x 0 83 x 0 13 m Reservoir water capacity 27 gal 102 L Pump pump capacity 12V DC marin...

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