Unist 4210 Series, 4230 Series Operation Manual
Low Volume
Spray Nozzles
Operation Manual
Questions or part orders:
1-800-253-5462 (US & Canada)
1-616-949-0853 (International)
Low Volume Spray Nozzles Operation Manual
Copyright © 2018 Unist, Inc.
06/29/2018 V1.0
Low Volume Spray Nozzles Quick Start Guide
4210 series (standard nozzles)
Connection Options
1. Direct Operation (page 7)
Connecting to an SPR-2000
controller will give each nozzle
its own uid and air supply.
This gives the most consistent
spray results since uid and air
supply are consistent for each
nozzle. This is the preferred
method.
A
Connect uid
Connect air
B
C
Connect air supply
Compressed air
C
D
Connect uid supply
Adjust
E
2. Daisy Chain Operation (page 8)
™
A D
Connect uid Connect uid supply
Connect air Adjust
B E
C
Connect air supply
Elbow at liquid port
ends daisy chain
Connecting to an SPR-2000™
controller will give each nozzle
its own air supply, but they will
share a uid line (daisy chained).
This approach has fewer
connections back at the solenoid
valve bank, but is more susceptible
to having nozzles spray differently
due to differing uid pressures at
each nozzle.
Solenoid
valve
bank
B
D
Pressurized uid supply
A
3. Manual Valve Operation (page 9)
A
Connect uid
Connect air
B
C
Connect air supply
D
Connect uid supply
Adjust
E
E
A
B
E
Pressurized uid supply
D
Manual
valve
Solenoid
valve
bank
C
Compressed air
A
BB
B
A
B
B
A
B
D
Pressurized uid supply
E
E
D
E
E
C
Compressed air
Low Volume Spray Nozzles Quick Start Guide
4230 series (remote nozzles)
1. Remote Operation (page 10)
Connecting to an SPR-2000™ controller will give each
nozzle its own its own uid supply, air supply, and
actuation air.
Compressed air
A
Connect uid
Connect air
B
C
Connect atomizing air
D
Connect air supply
Connect uid supply
E
Adjust
F
Remote
adjustment
solenoid
valve bank
E
D
F
C
A
B
F
A
B
C
Pressurized uid supply
Important Operator Information
Consult this documentation in all cases where this caution symbol appears. This symbol is used to inform
you of any potential HAZARD or actions that require your attention.
Use of this equipment in a manner other than that specied by Unist, Incorporated may compromise design integrity
and become unsafe.
WARNING: This equipment is not intended for use in explosive environments.
ADVERTENCIA: Este equipo no está diseñado para uso en atmósferas explosivas.
AVVERTIMENTO: Questa apparecchiatura non è inteso per l’uso in ambienti esplosivi
WARNUNG: Das Ausrüstung darf in einer explosiven Umgebung NICHT verwendet werden.
AVERTISSEMENT: Cet équipement n’est pas prévu pour une utilisation dans des environnements explosifs
Identifying Symbols
Caution - ISO 7000-0434B
Table Of Contents
Introduction ...........................................................................................................................................1
Thank You ..................................................................................................................................1
System Requirements ...............................................................................................................1
How It Works ..................................................................................................................................... 2-3
Installation ....................................................................................................................................... 4-10
Mounting ....................................................................................................................................4
Dimensions ......................................................................................................................4
Articulating Arm ................................................................................................................4
Adjustable Magnet Mount ................................................................................................4
Modular Mounting System ...............................................................................................4
Modular Mounting System Assembly .................................................................................... 5-6
Fluid & Air Connections ....................................................................................................... 7-10
4210 Series (Direct Operation) ........................................................................................7
4210 Series (Daisy Chain Operation) ..............................................................................8
4210 Series (Manual Valve Operation) ............................................................................9
4230 Series (Remote Operation) ...................................................................................10
Startup & Operation ..................................................................................................................... 11-13
Preliminary ...............................................................................................................................11
At The Nozzle (4210 Series Only) .................................................................................11
At The Valve Stack (4230 Series Only) ..........................................................................11
Prime The System ............................................................................................................. 12-13
Ensure Air Is Connected ................................................................................................12
Ensure Fluid Is Connected ............................................................................................13
Adjust The Spray Pattern ........................................................................................................13
Adjust The System For Pressure Drops ..................................................................................13
Troubleshooting ........................................................................................................................... 14-15
Rebuild Kit Instructions ............................................................................................................... 16-19
Appendix A: 4210 Series Drawing ....................................................................................................20
Appendix B: 4230 Series Drawing ....................................................................................................21
Appendix C: 4210 Series Part Numbering Scheme .........................................................................22
Appendix D: 4230 Series Part Numbering Scheme .........................................................................23
Appendix E: Low Volume Spray Nozzle Spray Patterns .................................................................24
Notes....................................................................................................................................................25
Introduction
Thank You
Thank you for your purchase of the Unist Low Volume
Spray Nozzles. Please take the time to read this operation
manual to take full advantage of your new nozzles.
Standard Low Volume Spray Nozzle (4210 Series)
Actuation &
atomizing air
(AIR)
Fine tune air ow
rate independently
with needle valve
(AIR)
System Requirements
Air supply pressure: 40-100 psi [3-7 bar]
(dry ltered compressed air)
Fluid supply pressure: 20-100 psi [1.4-7 bar]
Maximum cycle rate: 200 cycles per min
Operating temp range: 40-150˚F [4-65˚C]
Fluid viscosity range: 31-3500 SUS
Pressurized uid
connection
(LIQUID)
Fine tune uid ow
rate independently
with needle valve
(LIQUID)
Integral valve features
immediate on/off
control
Delivers consistent &
controlled spray pattern
Figure 1: Standard Low Volume Spray Nozzle
Remote Low Volume Spray Nozzle (4230 Series)
Actuation air
connection
(On/Off)
Atomizing air
(Atomize)
Delivers consistent &
controlled spray pattern
Pressurized uid
connection
(Liquid)
Remote Low Volume Spray Nozzles
utilize needle valves that are built into
the solenoid valve. This allows
adjustment of the spray pattern if
the nozzle is in a hard to reach area.
1
Figure 2: Remote Low Volume Spray Nozzle
How It Works
The Low Volume Spray Nozzle has an integral valve that maintains uid pressure right to the tip of the nozzle, and uses
the air signal to actuate a diaphragm that operates the nozzle. This provides immediate on and off control, which
eliminates lag and prevents messy uid drips.
Pressurize uid is in the area highlighted in red. When the nozzle is off, the piston assembly is sealed against the
small O-ring at the tip of the nozzle. When the nozzle is on, the piston assembly is pulled away from the small O-ring,
as shown in Figures 3 and 4.
Figure 3: Turning the Low Volume Spray Nozzle on
Figure 4: Up-close view of the piston assembly pulled
away from the small O-ring (nozzle spraying)
2
How It Works
A compressed air signal from the valve goes to the chamber highlighted in red. When the nozzle is on, the chamber
is pressurized. When the nozzle is off, the chamber is not pressurized and the spring forces the piston assembly
against the bottom O-ring, turning the uid ow off, as shown in Figures 5 and 6.
Figure 5: Turning the Low Volume Spray Nozzle off
Figure 6: Up-close view of the piston assembly
pushed up against the small O-ring (nozzle closed)
3
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