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13

3. Adjust the 

LIQUID

 and 

AIR

 flow control valves until the 

desired spray pattern is obtained. If necessary, adjust the 
air and fluid pressure as well. Lock the needle valves in 
place by turning the jam nut clockwise until tight.

4. Repeat for each nozzle.

Note:

 Too much atomizing air flow will cause excessive 

mist and result in an undesirable fog.

Using the Unist SPR-2000

 or SPR-2000 JR

 controller 

or the customer supplied controller, the valves will need 
to be programmed to cycle at the appropriate time for the 
necessary duration to satisfy the application. Consult the 
SPR-2000

 or SPR-2000 JR

 manual for further details.

Adjust The System For Pressure Drops

1. Depending on the system configuration, having 
multiple nozzles operating at once can cause a pressure 
drop across the valve stack in both the air and the fluid.  
To account for this, simulate the anticipated drop by 
turning on as many nozzles as you anticipate would be 
on at any one time in your operation. If the spray nozzles 
are no longer giving spray pattern set in step 3, increase 
the incoming air and fluid pressure at the controller’s 
or fluid supply regulator until they are once again 
giving the desired spray pattern.

Ensure Fluid Is Connected

1. Open the 

LIQUID

 needle valve on the nozzle body 

(4210 series)

 or the valve stack 

(4230 series)

 by turning 

the needle valve 1 full turn counter-clockwise. Actuate 
the solenoid valve and wait for the fluid to fill the 
tubing and for a steady stream to come out of the nozzle. 
Depending on fluid pressure, fluid viscosity and tubing 
length, this can take a minute or more.

 

a. If no fluid appears, refer to the Troubleshooting: 

 

Fluid not coming out of nozzle section of this manual 

 

(page 9).

3. Close the 

LIQUID

 needle valve.

4. Repeat for each nozzle.

Adjust The Spray Pattern

1. For each nozzle on the stack 

(4210 series)

 turn the 

AIR

 needle valve on the side of the nozzle body 1/2 turn 

counter-clockwise to open it. 

(4230 series)

 Turn 

the 

Atomize

 needle valve on the top of the solenoid 

valve attached to the nozzle 1/2 turn counter-clockwise 
to open it.

2. Place a piece of cardboard or other absorbent material 
in the spot that will be sprayed. Actuate the valve for 1-2 
seconds and check the spray pattern.

Startup & Operation

Figure 33: Opening the LIQUID needle valve (4210)

Figure 34: Opening the Liquid needle valve (4230)

Figure 35: Adjusting spray pattern

Figure 36: Adjusting spray pattern

Summary of Contents for 4210 Series

Page 1: ...Low Volume Spray Nozzles Operation Manual...

Page 2: ...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...

Page 3: ...ing fluid pressures at each nozzle Solenoid valve bank Compressed air Low Volume Spray Nozzles Quick Start Guide 4210 series standard nozzles Pressurized fluid supply Connection Options Compressed air...

Page 4: ...ion air Low Volume Spray Nozzles Quick Start Guide 4230 series remote nozzles 1 Remote Operation page 10 Remote adjustment solenoid valve bank Compressed air Pressurized fluid supply Connect fluid A C...

Page 5: ...t Incorporated may compromise design integrity and become unsafe WARNING This equipment is not intended for use in explosive environments ADVERTENCIA Este equipo no est dise ado para uso en atm sferas...

Page 6: ...Identifying Symbols Caution ISO 7000 0434B...

Page 7: ...30 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 F...

Page 8: ......

Page 9: ...al valve features immediate on off control Pressurized fluid connection LIQUID Fine tune air flow rate independently with needle valve AIR Actuation atomizing air AIR Delivers consistent controlled sp...

Page 10: ...and prevents messy fluid drips Pressurize fluid 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...

Page 11: ...en the nozzle is off the chamber is not pressurized and the spring forces the piston assembly against the bottom O ring turning the fluid flow off as shown in Figures 5 and 6 How It Works Figure 5 Tur...

Page 12: ...mp into the nozzle and then mount the magnet mount where desired Modular Mounting System If your nozzle came with a modular mounting system assembly is shown on the next page Installation 1 25 in 31 8...

Page 13: ...for bar clamps A 3 32 Allen wrench for the set screw in the base clamp Note Assembly is easier if you do it with the mount lying flat then stand it up when it has been assembled 1 Lay out the pieces e...

Page 14: ...base plates 7 Attach the nozzles to the nozzle mounting clamps a Slide the stainless steel sleeve into the bar clamp b Insert the 1 4 20 bolt from the bottom of the mounting clamp through the sleeve i...

Page 15: ...ing fluid pressures at each nozzle The same options are available with a manual air valve although it is rare a manual valve is used with more than one nozzle Fluid Air Connections 4210 Series Direct...

Page 16: ...t side of tee on the first nozzle route the tubing and insert it into the input side of second nozzle s tee Repeat this for each nozzle in the chain 3 At the last nozzle in the chain this has an elbow...

Page 17: ...ic controller is not used a manual valve operation is also an option 1 Connect clear nylon tubing between a pressurized fluid supply and the LIQUID port of the nozzle 2 Connect compressed air to the m...

Page 18: ...ze air and On Off air supply The compressed air will turn the nozzle on and off The liquid and atomize air are used to create the nozzle spray 1 Connect the clear nylon tubing to the Liquid port of th...

Page 19: ...een installed Preliminary At The Nozzle 4210 Series Only 1 Close the LIQUID needle valve on the side of the nozzle body by turning the needle valve clockwise until the needle valve is closed 2 Close t...

Page 20: ...ck 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 uid pressure by sliding the manual slide valve on the tank towards the r...

Page 21: ...oller s or fluid supply regulator until they are once again giving the desired spray pattern Ensure Fluid Is Connected 1 Open the LIQUID needle valve on the nozzle body 4210 series or the valve stack...

Page 22: ...d pressure back on If not Ensure that the flow control valve is not all the way closed 4230 series nozzle and valve stack Check that the quick disconnect fitting is fully inserted cannot be removed by...

Page 23: ...ip Check for debris in nozzle body This requires disassembling the nozzle Follow the Rebuild Kit Instructions on page 16 using the existing parts instead of the new parts when re assembling Check for...

Page 24: ...ion wrench 2 1 1 16 combination wrench 3 Standard pliers 4 Dental pick or similar tool 5 Compressed air gun and or thin piece of wire 6 Flashlight 7 Lubriplate 630 AA or equivalent grease 1 If you hav...

Page 25: ...oreign matter 10 Place the spray nozzle body on a work surface and support it so the nozzle is facing down Be sure not to damage the nozzle tip 6 Remove the 1 OD O ring from the spray nozzle body It m...

Page 26: ...e a flashlight to ensure that the O ring has been installed squarely in the end of the bore Holding the nozzle body up to a light and checking to ensure that the inside of the nozzle tip looks circula...

Page 27: ...assembly into the spray nozzle body by pressing down and rotating the piston back and forth until it slips past the O ring and bottoms out in the nozzle body 17 Install the new diaphragm spring onto...

Page 28: ...m ID VITON 301340 1 3 LV SPRAY NOZZLE THREADED PLUG W 10 32 SET SCREW 4217A 1 2 LV SPRAY NOZZLE INSERT 4216 1 1 PISTON ROD ASSEMBLY 4212 1 8 10 8 4 5 6 2 1 7 3 REBUILD KIT 302106 1 8 NPT ITEM NO DESCR...

Page 29: ...NOZZLE INSERT 1 PISTON ROD ASSEMBLY 6 1 2 3 8 REBUILD KIT 303823 ITEM NO DESCRIPTION PART NUMBER QTY 9 BALL STAINLESS 125 DIAMETER 71 2031 1 2 8 COMPRESSION SPRING 302992 1 7 LV SPRAY NOZZLE BODY REMO...

Page 30: ...1 8 NPT 1912 3 ELBOW PUSH IN 5 32 OD 1 8 NPT 1913 TEE PUSH IN 1 4 OD 1 8 NPT 9910 06 4 ELBOW PUSH IN 5 32 OD 1 8 NPT 1913 ELBOW PUSH IN 1 4 OD 1 8 NPT 1915 5 TEE PUSH IN 5 32 OD 1 8 NPT 1912 TEE PUSH...

Page 31: ...LBOW PUSH IN 5 32 OD 1 8 NPT 1913 3 ELBOW PUSH IN 5 32 OD 1 8 NPT 1913 ELBOW PUSH IN 1 4 OD 1 8 NPT 1915 4 TEE PUSH IN 5 32 OD 1 8 NPT 1912 ELBOW PUSH IN 1 4 OD 1 8 NPT 1915 5 ELBOW PUSH IN 5 32 OD 1...

Page 32: ...es Please note that these values are a guideline for initial nozzle setup Actual spray pattern will vary depending on the applied fluid air and fluid pressures and needle valve settings Distance B Spr...

Page 33: ...25 Notes...

Page 34: ...MANLVSN unist com Unist Inc 4134 36th Street SE Grand Rapids MI 49512 USA U S Canada 800 253 5462 International 616 949 0853 Email salessupport unist com...

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