System Component Information
III. Fluid heater.
See
Fig. 5.
The heater (3) used in this system is a high mass
heater
. Always circulate the fluid when the heater is
operating to prevent overheating and damaging the
fluid. Do not use catalyzed material in this heater
.
IV. How to use the 3–way valve.
See
Fig. 5.
Heated systems require that the fluid circulate
constantly when the heater is turned on. The 3-way
valve (7) supplied with this system allows you to drain
or circulate the fluid. The words
Drain
and
Circulate
are marked on the valve.
1.
In the
Drain
position and with the gun untriggered,
the fluid returns from the gun, to the back pressure
regulator (3), to the hose (19) and to the 3–way
valve (7) which directs the fluid out the drain hose
(8). This position is used when flushing the system
and when relieving system pressure.
2.
In the
Circulate
position, with the gun untriggered,
fluid returns from the gun, to the back pressure
regulator (3), to the hose (19) and to the 3–way
valve (7) which directs the fluid back into the pump
intake. This position is used during normal opera
-
tion and it helps keeps the fluid at a constant
temperature.
Fig. 5
32
19
7
8
V. How to adjust the air and
back pressure regulators. See
Fig. 6.
This system has two air regulators. As you look at the
system, the regulator (31a) on the left of the pump
regulates air to the gun and the regulator (31b) on the
right regulates air to the pump.
1.
Always open air regulators slowly to prevent surg
-
ing during startup.
2. T
o open the regulator
, which allows air to flow
, turn
the T–handle IN (clockwise). T
urn the T–handle
OUT (counterclockwise) to close off the air flow
.
Be sure the jam nut under the T–handle does not
interfere with your adjustments. T
ighten the jam
nut to lock in the setting, if desired.
3.
The back pressure regulator (3), located on the
fluid return side of the circulating system, acts as a
flow control. Use it to balance the pressure of the
circulating fluid so that the pump sucks in a suf
fi-
cient volume of fluid without running too fast or too
slow. T
urn the regulator IN (clockwise) to restrict
fluid and slow down the pump. T
urn the regulator
OUT (counterclockwise) to allow more flow which
speeds up the pump. See Fig. 6.
4. T
o open the back pressure regulator
, which allows
fluid to flow
, turn the knob IN (clockwise).
5.
Adjust the back pressure regulator only when the
gun is triggered and fluid is flowing through the
regulator for an accurate setting.
Fig. 6
CW
CCW
31b
31a
3
