INTRODUCTION
2
VMT - v. JUNE 2008
1.1
UNPACKING AND HANDLING
The Little Wonder reverse osmosis units are shipped pre-assembled. There are no special instructions
towards unpacking and handling of the watermaker system. Inspect the RO unit to verify it was not
damaged in transit. Also, please refer to the plumbing diagram to verify all components for the
watermaker are shipped prior to installation.
DO NOT EXPOSE THE RO UNIT TO FREEZING TEMPERATURES WITHOUT PROPER STEPS TO
TREAT THE RO UNIT FOR SUB-FREEZING TEMPERATURES.
1.2
PERFORMANCE SPECIFICATIONS
Parameter
Specification
Raw water temperature (minimum)
33
°
F (1
°
C)
Raw water temperature (nominal)
77
°
F (25
°
C)
Raw water temperature (maximum)
113
°
F (45
°
C)
Min. raw water inlet pressure
Flooded suction pressure
Max. raw water inlet pressure*
30 psi
Flush water recommended max. pressure*
35 psi
Design RO element pressure
800 psi
Max. RO element pressure
1000 psi
Max. feedwater chlorine residual
< 0.1 ppm
Cleaning solution pH range
10-11 (chem. 1), 2-3 (chem. 2)
Membrane type
Thin film composite
Table 1.0 - Performance Characteristics
*
For inlet pressure greater than recommended limits, install pressure regulator.
NOTE:
REGARDING WATER PRODUCTION:
The RO series number (i.e. LW160, LWM350, or LWV 200) refers to gallons per day (GPD) production
produced with new membranes at design optimum conditions.
To achieve optimum production:
(1) The feed flow must be unrestricted (positive water pressure at the inlet to high pressure pump).
(2) Seawater temperature at 77
°
F (25
°
C).
(3) Seawater salinity at 32,000 parts per million (ppm) total dissolved solids (TDS).
(4) Direct current (DC) units should be at charging voltage (13.8 volts for a 12 volt system) and wire
size should be 6 gauge.
Variation of conditions (environmental, temperature, and frequency of use) and normal aging of
membranes will decrease production. Normal membrane fouling will be partially recovered by chemical
cleaning, but 100% recovery should not be expected. Production rates from membrane to membrane
can vary + 15%.
1.3
ENVIROMENTAL REQUIREMENTS
Parameter
Specifications
List (Permanent):
Trim (Fore and Aft):
Pitch:
Roll:
15
°
+ 30
°
6
10
8
(6 sec cycle)
6
30
8
(12 sec cycle)
Table 1.1 - Nominal Operating Conditions
Содержание LW-160
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