Unist 4210 Series, Operation Manual

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12
Prime The System
Ensure Air Is Connected
1. Actuate the solenoid valve and ensure air is coming
out of the attached nozzle using the prime button on the
SPR-2000
™
controller.
a. If no air is coming out, refer to the
Troubleshooting: Air not coming out of nozzle
section of this manual (page 9).
2.
(4210 series)
Close the AIR needle valve on the side
of nozzle body.
(4230 series)
Close the Atomize needle
valve at the top of the solenoid valve.
3. Repeat for each nozzle.
5. Ensure all fluid connections between the solenoid
valves and the
Liquid ports on the nozzles are secure,
then turn on fluid pressure to the solenoid valve stack.
6. Ensure that the fluid pressure coming to the controller
is above 20 psi [1.4 bar].
a. If you have a Unist tank, you can turn on fluid
pressure by sliding the manual slide valve on the
tank towards the regulator.
7. Turn on air pressure to the solenoid valve stack,
and set the air pressure with the regulator. The pressure
should be above 40 psi [3 bar] for one nozzle. If you are
using multiple nozzles at the same time, the pressure
should be greater than 40 psi [3 bar], but should not
exceed 100 psi [7 bar]. For a system with 2 to 4 nozzles,
40 psi [3 bar] is generally a good starting point.
Figure 28: Checking all fluid connections
Figure 29: Turning on fluid pressure from tank
Startup & Operation
Figure 30: Actuate each solenoid valve with prime button
Figure 31: Closing AIR needle valve
Figure 32: Closing Atomize needle valve