7
HALO
®
DOSER
™
Installation Manual
3.2
Installing the Vent Kit
Tubes to be
cut to suit
installation
Tube supplied
in kit
Longer spigot
to Doser
Shorter
spigot to
wall vent
VENT
DOSER
Wall
VENT
DOSER
Acid
bottle
Keep 5 - 10 mm clearance
from bottom of container
Non-return
valve
Figure 5.
Vent Kit Installation Diagram
As supplied, the white tube is designed to suit a 5 ltr
and 15 ltr containers. The tube may need to be cut to
suit other drum sizes being used. Firstly insert the non
return valve into the rigid white tube, with the arrow
point up. (when fitted correctly you should be able to
blow through the valve into the tube). Now place the
tube into the drum, with the valve at the bottom (as
shown in Figure 6) and then lift the tube by roughly
10mm, then cut the tube level with the rim of the
container, this will allow space for the acid to to be
sucked into the tube. Now fit the correct size lid to suit
your drum. See Figure 5.
The tube from the acid drum must be connected to
the left-hand barb of the dosing pump and the tube
to the injection point is connected to the right-hand
barb. To connect the Halo Doser to the acid tubes,
slide a lock nut onto each tube as shown and push the
tube onto the barb. Slide the lock nut up the tube and
hand tighten it onto the pump. See Figure 6.
To Acid
Drum
To Injection
Point
Figure 6.
Halo Doser Tubing Connections
To avoid potential corrosion issues, the acid drum
shouldn’t be placed underneath any equipment.
See Figure 7.
If the Halo Doser is installed in an enclosure or shed,
the acid drum should ideally be stored out side of
the enclosure or shed. The vent kit supplied will help
reduce fumes within the shed, but storing acid drum
in a secured location outside is best.
Rigid White
Tubing
