Spectra Watermakers MEM-90,150 System Specifications, Testing the Performance of the Membrane

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SpectraPure®

 

SYSTEM SPECIFICATIONS

 

Sediment Pre-Filter

0.5 micron MicroTec™ sediment pre-filter

Carbon Filter

0.5 micron carbon block pre-filter

RO Membrane Type

Thin-Film Composite (TFC)

DI Cartridges

MAXCAP DI

 

SilicaBuster™ DI

Rejection Rate

Greater than 98% average

Input Water Pressure

60 psi (4.15 bar) line pressure*

Input Water Temp

77°F (25°C)

Recovery Rate

20% (i.e. 20% of the water will be

 

collected as pure water)

Nominal Membrane Flow Rates @ 60 psi & 77° F :

 

GPD (lpd)

Product Water Flow Rate

Concentrate Flow Rate

90 (340)

235ml/min

940 ml/min

150 (340)

235ml/min

940 ml/min

300 (680)

470ml/min

1880 ml/min

Reverse Osmosis Membrane Feed Water Requirements

For the 1 year SpectraSelect TFC membrane pro-rated warranty to be honored, the following conditions must be met:

Operating Pressure*

40 – 80 psi (2.75 – 5.5 bar)

pH Range

3 – 11

Maximum Temperature

100° F (38° C)

Maximum Turbidity

1.0 NTU

Maximum Silt Density Index

5.0 (based on 15 min. test time)

Maximum Chlorine

less than 0.1 ppm

Maximum TDS

2000 ppm

Maximum Hardness

10 grains (170 ppm as CaCO3)

Maximum Iron

less than 0.1 ppm

Maximum Manganese

less than 0.1 ppm

Maximum Hydrogen Sulfide

0 ppm

Langlier Saturation Index

LSI must be negative

*Operating pressure less than 40 psi will require a booster pump:

less than 49 GPD use BPLF-MO-115(-230), more than 49 GPD use BPHF-MO-115(-230).

*Operating pressure greater than 80 psi will require a pressure reducing valve.

 

SpectraPure®Inc. 480.894.5437 Call us toll-free 1.800.685.2783

4

2167 East Fifth St, Tempe, Arizona 85281

 

SpectraPure®

TESTING THE PERFORMANCE OF THE MEMBRANE

Membrane Output Calculation

Membranes produce the rated gallons per day (GPD) at 60 psi (4.1 bars) operat- ing pressure, 77°F (25°C) operating temperature and 500 ppm total dissolved solids.

Membrane output gallons per day (GPD) depends on operating pressure, water temperature and the ppm TDS in the feed water.

Expected GPD = Rated GPD × PCF × TCF

PCF is the pressure correction factor

TCF is the temperature correction factor

Calculation of Pressure Correction Factor (PCF): The output (GPD) from the membrane is directly proportional to the applied pressure.

Note: The membrane is rated to produce the rated GPD at 60 psi. For any pres- sure other than 60 psi the output GPD is multipled by the PCF.

PCF = Line Pressure (in psi) ÷ 60

Calculation of Temperature Correction Factor (TCF): The output (GPD) also decreases with decrease in temperature. This is because water viscosity increases with decrease in water temperature.

Temperature Correction Factor Table (TCF)

°F /°C

TCF

°F \°C

TCF

°F \°C

TCF

41.0

/5

0.521

59.0 /15

0.730

77.0 /25

1.000

42.8

/6

0.540

60.8 /16

0.754

78.8 /26

1.031

44.6

/7

0.560

62.6 /17

0.779

80.6 /27

1.063

46.4

/8

0.578

64.4 /18

0.804

82.4 /28

1.094

48.2

/9

0.598

66.2 /19

0.830

84.2 /29

1.127

50.0

/10

0.620

68.0 /20

0.857

86.0 /30

1.161

51.8

/11

0.640

69.8 /21

0.884

87.8 /31

1.196

53.6

/12

0.661

71.6 /22

0.912

89.6 /32

1.232

55.4

/13

0.684

73.4 /23

0.941

91.4 /33

1.267

57.2/14

0.707

75.2 /24

0.970

93.2 /34

1.304

SpectraPure®Inc. Fax 480.894.6109 Fax us toll-free 1.877.527.7873 E-mail: spectra@spectrapure.com Visit us on the web www.spectrapure.com 21

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Contents Replacement Parts Single or Dual Membrane ModelTable of Contents Three Year Manufacturers WarrantyTerms and Conditions of Sale Membrane Output Calculation ExampleSystem Specifications Testing the Performance of the MembraneTemperature Extremes Choosing a Mounting LocationTips for Long Membrane Life System DescriptionUsing the Pressure Gauge MaintenanceMetering and Diagnositcs StorageTesting the RO Membrane Rejection Rate Troubleshooting Guide for RO/DI SystemsSystem Initialization CheckRO Membrane Replacement Checking the Concentrate to Purified Water RatioFR-90YELLOW or White RO Membrane DiagnosticsGreen SilicaBuster Maintenance and Replacement Maxcap RO/DI Maintenance and ReplacementFlow Restrictor REMOVAL, Adjustment Replacement Sediment PRE-FILTER Replacement Carbon Block Filter Replacement

CF-0.5-10, SF-MT-0.5-10, MEM-90,150 specifications

Spectra Watermakers is renowned for its advanced water desalination technology, providing reliable fresh water solutions for various applications. Among their notable products are the CF-0.5-10, SF-MT-0.5-10, MEM-90, and MEM-150 systems, each designed to meet specific water production needs while maintaining ease of use and efficiency.

The CF-0.5-10 model is a compact and highly efficient watermaker that delivers up to 10 gallons per hour. Its primary feature is reverse osmosis technology, which effectively removes salt and impurities from seawater, resulting in high-quality potable water. The system is equipped with an energy recovery device that minimizes energy consumption, making it a sustainable choice for boaters and coastal residents alike. With a lightweight design, the CF-0.5-10 is easy to install and maintain, ensuring that users can consistently access fresh water in remote locations.

The SF-MT-0.5-10 is another impressive model from Spectra Watermakers. It offers similar efficiency and capacity but includes additional features for marine applications. This model utilizes a high-quality stainless steel frame and marine-grade components, enhancing durability amidst harsh conditions. The SF-MT-0.5-10 includes an intuitive user interface, allowing for easy operation and monitoring of water production levels. Its compact size makes it suitable for installation in tight spaces on yachts or small vessels.

For those needing larger production capacities, the MEM-90 and MEM-150 systems provide impressive output. The MEM-90 can produce up to 90 gallons per day, while the MEM-150 takes it a step further with a daily capacity of 150 gallons. Both systems leverage advanced membrane technology, ensuring robust performance and long-term reliability. Features such as automatic pressure regulation and user-friendly digital controls provide operators with a seamless experience.

Additionally, these systems are designed with energy efficiency in mind, employing innovative technologies to reduce power consumption. Their rugged construction ensures that they can withstand various environmental stresses, making them ideal for use in both commercial and recreational settings.

In conclusion, Spectra Watermakers’ CF-0.5-10, SF-MT-0.5-10, MEM-90, and MEM-150 systems exemplify quality and innovation in water desalination. Each model brings unique features to meet diverse needs, ensuring that users have a reliable source of fresh water wherever they may be. Whether for marine use or land-based applications, Spectra’s watermakers guarantee performance, efficiency, and durability.