Magnum Venus Plastech UNIVERSAL PROPORTIONER - Manual (Page 8)

UPLS SYSTEM OVERVIEW
UP-XX-XX-XX
MAGNUM VENUS PLASTECH REV 1.00
APRIL 2010 PAGE 8
MAXIMUM FLUID PRESSURE (2,500 TO 2,700 PSI)
Depending on the size of the air motor, the air operating pressures and the size of the
fluid sections used dictates how high the fluid pressure can reach. Normally, these
pressures will never be met in normal operating ranges. However, if a material hose
had become plugged with set-up resin with the air motor at a high setting (100 psi or
higher) the plugged line could reach these pressures.
A pressure control valve (PLV-1000) is used to prevent pressures from exceeding the
maximum pressure point. Depending on the unit configuration, there may only be one
of these valves on the adjustable linkage pump and in some cases, on both pumps.
The pressure control valves are located on the hard plumbed fittings that exit the
material pump fluid sections. They have green 1/8” poly tubing attached at the top of
the valves which run back to a 3-way pneumatic (Mac valve) valve located off the side
of the air motor.
PRESSURE CONTROL VALVE
The pressure control valve has a spring loaded plunger, the plunger end is in the
material stream. If the material stream reaches pressures of 2,500 to 2,700 psi the
plunger is forced up. Once the plunger opens, it breaks an air circuit which in turn
closes the 3-way valve (Mac valve) that supplies air to the air-motor. When this
happens, air will bleed from the small holes on the side of the pressure control as long
as the gun is in the on position. Please see the PLV-1000 manual for more information.
(NOTE: The pressure control valve does not release fluid pressure. It only shuts
off the air supply to the air motor).
AIR MOTORS (POWER HEADS)
Available Diameters and SCFM air consumption at 40 cycles/min.
60 psi 80 psi
10” Diameter:
72 SCFM 90 SCFM
7” Diameter:
37 SCFM 46 SCFM
5” Diameter:
20 SCFM 25 SCFM
Incoming supply air pressure, regardless of the Air Motor size and operating pressure
can not be any lower then 90 psi. , when running the system. This is critical for the Air
motor pilot valves which affect the air motor change of direction. Use no smaller then
½” diameter hose supply line to unit of clean dry air with no quick disconnects. A ¾”
diameter air hose or larger is recommended when using the 10” air motor at higher
rates.
Customer is responsible for air supply connections with properly sized air hose and
compressed air volume (SCFM) available to system.