Hallett 30 1” Instruction Manual
Released on 1-Sep-16
– X800058R
Page 5
UV Pure Technologies Inc. © 2016
2.
I
NSTALLATION
I
NSTRUCTIONS
Before Beginning Installation
Water Conditions - Pre-treatment Parameters
Note this section is designed to ensure the optimal performance of your Hallett
system. Please review the following pre-treatment parameters prior to
installation.
If any specifications are of concern or unclear please contact your water dealer
or specialist. Note some of the information below is technical in nature and you
may want to contact your water treatment specialist to review the parameters.
IMPORTANT -
Should any of the preceding water parameters exceed the
recommended limits, the system will not be serviceable under warranty.
Water Parameters for Treating Drinking Water
:
The minimum water requirements for operating the Hallett system are:
UV Transmittance
- more than 75 percent transmission of ultraviolet
light (if there is color in the water the UV transmittance may fall below
75 and the system will not provide the necessary UV dose for safe
drinking water). It is recommended for all surface water applications for
the water to be tested for UV transmittance.
Total Dissolved solids (TDS)
- must be less than or equal to 1000
mg/L (mg/L=ppm)
Level of turbidity
- or cloudiness - of less than or equal to 1 NTU
(nephelometric turbidity unit). A 5 micron sediment filter is
recommended upstream of the unit to reduce turbidity (the presence of
a filter will also simplify disinfection of plumbing
– see Disinfecting the
Plumbing). For surface waters, a dual gradient pre-filter (75x25 or
50x5) is recommended in addition to the 5 micron filter.
Water Capacity in Drinking Water Application:
Hallett 30
The water treatment range for the Hallett 30 is 0
–104 liters per minute (or 0–
27.4 U.S. gallons per minute), with a working pressure of 69
–690 kPa (or 10–
100 psig).
The Hallett 30
1” unit includes a flow regulating device that will limit the flow
rate.
Warning:
Do not remove this device or water may flow through the system
at a rate that exceeds the certified performance and the system may not provide
the necessary UV dose to remove all pathogens.
Temperature Requirements:
Where the unit is installed, the ambient temperature should be between 7
–38°C
(45
–100°F). If the temperature drops below freezing, drain the unit completely to
prevent damage (see Draining Instructions page 26). The water temperature
range is 1
–38°C (34–100°F).
Special Note
: Drafts or areas where cold air is
blowing on the system can adversely affect the temperature
– make sure the