8
SECTION 4
INSTALLING THE SYSTEM
WARNING: The air supplied to the machine must be clean, free of moisture and lubricating fluids;
failure to do this voids all warranties.
The AutoJet
®
VC10 Industrial Heated Spray System is powered by wiring into 480 VAC 1 ø service.
Do not connect
power until all wiring, and connection of the system is complete.
4.1 FILLING THE HEATING LOOP
A circulating conditioning line provides heated fluid to all the jacketed components of the system. This line consists of
a 1/3 HP 480 VAC centrifugal pump, immersion heater, thermometer, pressure gauge, and return reservoir.
•
Centrifugal pump
-
circulates the heated fluid throughout all the jacketed components.
•
Immersion heater
-
maintains the temperature set point of the heated fluid and the process fluid.
•
Temperature controller
-
provides temperature regulation to the in
-
line immersion heater.
•
High limit switch
-
turns heater off at 300°F for fail safe protection. Temperature feedback is provided by the
thermometer in the tank for reference.
•
Level switch
-
verifies that enough fluid is in the system so that components are not damaged.
•
Regulator
-
allows for the system to be filled with a pressurized source of water or glycol solution. Deionized water
(DI) is recommended to limit mineral deposits. A 50/50 mixture of propylene (or ethylene) glycol and water must
be used for temperatures of 180 to 200°F. The regulator limits the pressure of the system for safe operation.
•
Return reservoir
-
provides room for expansion of the heated fluid, and pressure relief for over filling of the
system. Note that all the conditioning lines from the pump, through all jacketed components, and back to the
return reservoir must be run in series. Never split the flow path as this could result in cold spots.
DIRECTIONS FOR FILLING THE HEATING LOOP:
1)
Begin by turning the disconnect switch to the
“
On
”
position. Apply power to the system using the
“
Power On
”
pushbutton. The amber indicator will light up.
2)
Prior to the system being run for the first time, the heating circuit must be filled with conditioning fluid. Connect
the conditioning fluid source to the ¼
”
NPT (F) valve in the middle of the standpipe.
3)
To fill the reservoir, open the valve and adjust the regulator. The regulator should be set to 5 psi. The over
-
pressurization valve past the regulator will open at 10 psi.
4)
Open the air purge vents located on the return line and the pump; these will automatically purge air out of the
water line.
5)
As conditioning fluid fills the reservoir, loosen the 1/2 G threaded level switch connection recognizable by an O
-
ring (bottom connection on the stand pipe).
6)
Allow the fluid and air mixture to escape from the loosened connection until no air bubbles are seen; hand
-
tighten
the sensor to begin building pressure.
8) Once the small, yellow light on the sensor is lit, allow the system to continue to fill for several minutes. Wait until
the inlet regulator at the top of the standpipe levels off at a pressure, and make sure it is adjusted to 5 psi at a no
-
flow condition.
9)
Turn the pump on by using the selector switch on the system control panel. If the standpipe fluid level drops below
the level sensor, the pump will automatically be turned off and the Pump On light will be off.
10) If water begins to leak out of the purge vents, tighten again.
