VMS-3
Manual
2
Revised
08/2010
SPECIFICATIONS
Flowrate
3 GPM, 11 LPM
Inlet and Outlet Ports
3/4” Male NPT
Length
13.5”, 34 cm
Extra length for lamp replacement
In place
13”, 33 cm
Height including ports
5.5”, 14 cm
Width
4.3”, 11 cm
Chamber diameter
4.3”, 11 cm
Dry Weight
10 lbs, 4 kg
Number of lamps
1
Power consumption (including
Ballast loss)
16 W
Maximum operating pressure
100 psi, 6.8 bar
Ambient temperature
33 – 100 F, 1 – 38 C
INSTALLATION
The VMS-3 should be installed in a dry, sheltered location protected from direct weather
and protected from freezing. Depending on the air humidity and the temperature of the
water being treated, condensation is possible on the outside of the unit during
operation. Therefore installation location should be selected so that dripping
condensation cannot damage other equipment.
The unit should be installed closest to the point-of-use and after other water devices
such as de-ionizers, water softeners, carbon filters, prefilters, RO units, storage tanks,
pressure tanks and pumps. This reduces the chance of purified water being re-
contaminated by bacteria in any of these units. Remember, UV radiation does not have
any residual disinfection properties. The UV system should be connected to the cold
water service.
The UV system will function best when mounted horizontally with the connection ports
facing upwards. Either port can be used for the inlet or outlet. VMT offers an optional
set of mounting clamps as part number 90-1586. For complete design dosage air must
be purged from the chamber, which will happen naturally when the discharge port is
upwards. If the unit is mounted on a slope or vertically, use the higher port as the
outlet. Some air pocket may still remain above the outlet, this shortens the residence
time slightly but does not present a operational problem. If mounted vertically, it is
necessary to provide support below during maintenance as the sleeve or lamp can drop
down.
