Model 400 GMX
Magnetic Fluid Conditioner for 1/4" to 1/2" Tubing or Pipe.
Residential and commercial applications wherever hard water
is present (fuel lines, swamp coolers, commercial ice
machines, fountains, printing equipment, commercial
Each Model 400 set consists of two pieces--one with a north
polarity and the other with a south polarity (the GMX label
covers the north pole piece). One north pole/south pole set
is recommended for 1/4" to 3/8" lines and most automobile
applications. Two sets are recommended for 7/16" to 1/2"
lines and most diesel truck applications.
1-1/4" nylon bolts are provided with the Model 400.
1-3/4" bolts are available from GMX International.
1. Insert the bolts through the holes in both units [north
pole and south pole].
2. Secure the bolts with wing nuts the regular shaped wing
nuts are for normal installations. Locking wing nuts are
also provided for more secure installations. Tighten until
the wing nuts are snug. Do not over -tighten!
3. If the units do not clamp securely to the tubing, place a
sleeve of plastic or rubber tubing over the existing tubing.
This is recommended for tubing smaller then 5/16"inside
4. Install the second Model 400 set 1/2" away from the first
following the same installation instructions. Make sure that
the north pole units[with the GMX labels] are lined up so
that both are facing in the same direction on the same side
of the tubing. Also be sure that there is a 1/2" space
between the two sets.
For water systems the Model 400 should be installed wherever
the fluid enters the equipment being treated. Single sets
may be used as boosters for individual appliances, or on
moderate temperature recirculation systems.
For fuel systems the Model 400 should be placed 6" to 12"
away from any high heat source such as the manifold or the
exhaust system. And 12" away from diagnostic control centers
(computer) and sensors. Sets can be mounted on the fuel line
anywhere between the tank and the engine, On fuel injected
engines, mount the sets on the line to the engine not the
return line. When treating a semi-closed loop system line
(ice machine, swamp cooler, dishwasher) install the Model
400 inside the equipment after the circulating pump.
Direction of Placement:
The GMX label is placed over the north pole unit in each
set. The direction the fluid flows through the tubing makes
For best results when placing the Model 400 to treat a
particular area or appliance, place the sets at least 8" to
12" upstream (before) the area or appliance to be treated.
Do not place the Model 400 close to an electrical power line
or electrical equipment capable of generating strong
electrical fields, such as a welder or large electrical
motor. This can reduce effectiveness.
For Maximum effectiveness, magnetic conditioning requires a
smooth calm flow of fluid through the magnetic field. a
partial reversal of treatment may be triggered by
turbulence. Therefore always place the Model 400 a minimum
of 8"to 12" downstream (after)any pump or other
Non-Ferrous Pipes Only:
Install the Model 400 only on a straight section of
non-ferrous (PVC, rubber plastic, copper ,or stainless
steel) pipe or tubing--not on steel or iron . Don't place it
on any tubing to which the magnets stick. The penetration of
a magnetic field through iron or steel (except for stainless
steel) pipe is minimal, because the magnetic field travels
along the exterior of such tubing preventing it from
reaching the fluid. In such cases, replace a 12"section of
steel tubing with non -ferrous tubing and then install the
Model 400 on that section.
On water systems: for a few weeks after installing the Model
400 you may notice an increase in water turbidity
(cloudiness) this is because scale is being removed from the
system. During this stabilization period, carefully monitor
filters, tanks, and sumps each week, and drain or clean them
On fuel systems: a temporary decrease in mileage and an
increase in emissions may be noted after installing the
Model 400. This is a temporary condition resulting from the
removal of accumulated deposits from the fuel system and