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DESIGN
The Robo Drain is the ultimate demand operated
drain. The unit is fully automatic, no electricity is
required. Its low profile gives you the advantage of
installing it in areas where the vessel to be drained
is only a few inches from the ground. The Robo
Drain's design also eliminates the need for the in-
stallation of a vent line for most applications. A
unique air valve design uses a magnetic force to
ensure both a positive opening and closing that will
prevent any air loss. The magnetic force is cleverly
positioned away from the condensation level to
prevent any attraction of metal particulate. An in-
novative ball valve support and positioning system
prevents the side-loading problem which otherwise
would cause premature sealing failure around the
valve stem. Rifle drilled discharge porting ensures
that scale and rust will exit through a full ported
1/2" ball valve. The Robo Drain will not clog -- no
strainer required.
The blue cap is where the 1/8" needle valve needs
to be installed. The needle valve prevents a vac-
uum from forming in the Robo Drain. If a needle
valve is not installed and adjusted, a vacuum will
form causing condensate to back-up into the air
system. The needle valve does bleed a small
amount of compressed air to atmosphere. In a year
of operation the needle valve will consume about
the same amount of compressed air as a standard
electronic drain use in a single actuation.
The red cap is one of the ¾" condensate inlets.
Pipe your condensate to this port or the other ¾"
inlet. One of the ¾" inlets needs to be capped off
or run the condensate to both inlets.
Reference CS010
Page 2 of 4
Condensation enters through one of two ports. The
see-through vessel allows visual inspection of the
condensation as it rises. A stainless steel float
rises with the level of condensation and positions a
magnetic force over the valve housing. When the
liquid level reaches the desired level, the magnet
in the valve housing snaps upward and allows air
to pass through a stainless steel seat. The air then
moves to a non-lubricated air cylinder causing it to
extend and open the ball valve. Condensation,
scale and rust particles rapidly exit the unit. Before
any air is lost, the float removes the magnetic force
from the valve and the seat is covered with a Viton
seal. A powerful spring returns the air cylinder to its
normal position and rotates the positive closing ball
valve back to its normally closed position. The pilot
air used to actuate the air cylinder is isolated from
the air in the drain's reservoir.
CONNECTIONS EXPLAINED
A needle valve and a cap for one of the ¾" con-
densate inlets are not supplied. To properly install,
please have these items on hand at installation.
They are readily available from any plumbing sup-
ply house.
Robo Drain's operate on compressed air. The ¼"
behind the blue cap is where to connect the control
air. The Robo Drain requires clean dry air with a
pressure between 80 and 120 PSI.
Robo Drain's come standard with an inlet air filter
to stop particulate from clogging the drain's pneu-
matics. The test button allows you to actuate the
Robo Drain at any time, testing the drain.
OPERATION
Rev 1
11/15/2012
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Table of Contents
Troubleshooting
