Advantage Controls MicroTron O Series, Manual, Page: 6 / 16

6
4. Suction Lift vs Flooded Suction Applications
Suction Lift Installation
Mount the MicroTron™ pump on the top of a molded tank, not to exceed 5 feet from pump to bottom
of tank.
Flooded Suction
This installation is recommended for very low outputs, solutions that gasify and/or high viscosity
solutions. Priming is easier and loss of prime is reduced. Failure of the pump diaphragm or rupture
of the solution tubing can cause loss of solution in the tank.
5. Wall Mounting
The fluid end portion (head assembly) of the pump is set up to accommodate mounting of the pump
to the chemical container, either as a flooded suction, or a suction lift. The pump head must be kept
in a vertical position for proper operation. The head can be removed and rotated 90
o
if needed to
keep the inlet and outlet valves in a vertical position.
6. Foot valve installation
A weight is provided to hold the tubing and foot valve in a vertical position at the bottom of the tank.
Do not allow the foot valve to lay horizontally in the chemical container. This defeats the action
of the valve and causes the pump to lose prime. Keep suction tubing reasonable short and avoid
high spots or bends.
7. Injection Valve Installation
The injection valve is designed to prevent a back flow and to inject chemical into the line. To work
properly, this valve must be mounted within 45 degrees of vertical (see drawing). One end of the
injection valve is 1/2” MNPT. Install this end into the piping system. Use Teflon tape on this fitting only.
Connect the pump’s discharge tubing to the opposite end of the injector. Do not use Teflon tape or
joint compound on this fitting. Connect tubing between this fitting and the pump discharge fitting at
the pump head.
NOTE: When installation is made into a
line with zero pressure or when
pumping into an open vessel, use
our optional three function valve
for positive back pressure and
anti-siphon injection valve.
Suction lift Flooded Suction Not recommended