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| Home>Solar>>Water Pumping>>>Eta Pump | ||||||||||||||||
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DEEP WELL APPLICATIONS ETAPUMP can be submersed as deep as necessary to ensure reliable water supply. SURFACE WATER APPLICATIONS ETAPUMP can be submersed in any position, in a stream, pond, tank or shallow well.This eliminates any need for a pump house or for periodic priming. DRY RUN PROTECTION A low water sensor (included)turns pump off to prevent dry-run damage. Reset is automatic. SAND AND SILT TOLERANCE ETAPUMP has high resistance to wear from sand, clay, etc. that may occur in a properly constructed water well. However, extremely turbid water (greater than 2% solids by volume) may cause blockage in the pump or the drop pipe, especially at low flow rates. Do not use ETAPUMP to clean out a dirty well. CONTROLLER DISPLAY LED lights indicate:System –ON, Pump –ON, Full Tank –OFF and Low Water Source –OFF STORAGE REQUIREMENT A storage tank (not included) should be sized to supply a minimum of 5-10 days’ water supply, depending on climate and application. Water storage is generally more economical than energy storage in batteries. BATTERY SYSTEMS ETAPUMP battery versions are appropriate for pressurizing systems or where a storage tank is not desirable. Request a battery version data sheet. Voltages available: 24 and 48V. PIPE SIZES Pumps with “C ” or “ETA-14 ” in the model number have 1 1//4” outlet. Others have 1” outlet. Larger vertical drop pipe is not recommended because sand may accumulate due to low flow velocity. For sizing of long pipelines, consult a pipe sizing chart. DIMENSIONS
& WEIGHTS PUMP & MOTOR CONTROLLER SOLAR
ARRAY: Size and weight can be estimated from the array watts.
Watts is the last 3 digits of the system number. WETTED MATERIALS stainless steel 304, 316, 440B, brass (check valve only, 2% Pb), NBR rubber, polyurethane cable jacket, POM bottom plate. Pumps without “C ” in model number also contain chromium plated 316 stainless steel and natural rubber. TEMPERATURE LIMITS (pumps without C in system #) The optimum working range of water temperature is 45-77 °F (7-25 °C). As hot as 104 °F (40 °C) may stop the pump but will not cause damage. For other temperatures,inquire. ACCESSORIES HOW
TO SELECT AN ETAPUMP INTEGRATED SYSTEM ™ CLIMATE ZONE Three solar radiation zones are shown on the table,defined by peak sun hours/day .7.5 is average for summer in central and western USA, and for most locations during dry summer weather. PERFORMANCE RELATED TO WEATHER These systems are selected for optimum daily output during clear, dry weather. For improved performance during cloudy weather, select a system that produces about 50%more water than you require at 4.5 peak sun hours,or ask your supplier for advice. For satisfactory winter performance, it may be necessary to adjust the solar array tilt. This is an easy adjustment to perform, twice per year. SOLAR TRACKER OPTION A solar tracker automatically aims the solar array at the sun throughout the day.In clear weather, tracking increases the daily water volume by about 40%in summer (15%in winter).The tracker’s drive is non-mechanical (passive)and highly reliable,using only the flow of fluid against gravity. Tracking requires “Tracker Option ” to be ordered with the original purchase. For optimum performance during cloudy weather, or with frequent highly turbulent wind,a passive tracker is not recommended. DOUBLE SYSTEM Two pump systems can be installed in the same water source if the well casing is not less than 6"inside diameter.This will double the daily water volume. WARRANTY Document
Version 2.2 .September 2002 |
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To purchase products with your credit card call 800.799.1122 To
pay by check or money order send to: For
live help to size and price your system call 800.799.1122 |
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