OK International DX-350 / 355 Datenbogen

 

7 

• LCD does not 

light 

• No power input 
 
 

• Check power cord 

connections 

• Turn on power 
 

• System will 

not actuate 

• Foot switch not 

plugged in or 
improperly plugged 
in 

• Defective foot 

switch 

 
• Broken wire or 

loose connection 
inside unit 

 

• Defective solenoid 

• Defective PC board 

• Check foot switch 

connection 

 
• Foot switch needs to be 

repaired or replaced 

• Unplug power cord and 

disconnect air supply.  
Remove cover and check 
for broken wires or loose 
connections 

 

• Replace solenoid 

• Replace PC board 

• System will 

not pressurize 

• Insufficient air 

pressure 

• Air hoses not 

plugged in 

• Regulator defective 

• Increase air supply 

pressure 

• Check connection 
 
• Replace regulator 

• System will 

not pull 
vacuum 

• Vacuum setting is 

too low 

• Defective solenoid 

• Defective vacuum 

venturi 

• Defective vacuum 

needle valve 

• Increase vacuum setting 
 
• Replace solenoid valve 

• Replace venture 
 
• Replace needle valve 

• Inconsistent 

dispensing 

• Air bubbles in 

adhesive 

• Dispense time is too 

low 

• Dispense needle 

started to clog 

• Reduce vacuum setting 
 
• Increase dispensing time 
 
 
• Replace needle 

 

 
 
 
 
 
 
 
 
 
 
 

 

8

MAINTENANCE  
The dispenser is designed and built to be relatively maintenance free.  To assure 
trouble free operation, the following recommendations should be followed: 

1. 

Make certain air supply is clean and dry. 

2. 

Avoid turning barrels upside down or laying barrel so that material may 
run through air line to internal components. 

3. 

Avoid connecting the unit to excessive moisture or solvent saturation. 

4. 

Avoid connecting air supply exceeding 100 psi (6.9 bar) for the DX-350 
and 15 psi (1.03 bar) for the DX-355. 

5. 

Use only Amyl Alcohol to clean outside surface of the main housing. 

6. 

Use only soft cloth to clean the LCD. 

 
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For DX-3xx/2xx spare parts and accessories information, please visit the DX-
3xx/2xx User Guide webpage at http://www.okinternational.com 

 

 

 

 
OK International warrants this product to the original purchaser for a period of one 
(1) year from date of purchase to be free from material and workmanship defects but 
not normal wear-and-tear, abuse and faulty installation.  Defective product or 
subassembly and components under warranty will be repaired or replaced (at OK 
International's option) free of charge. Customer with defective product under 
warranty must contact the nearest OK International office or distributor to secure a 
return authorization prior to shipping the product to the assigned OK International 
authorized service center.  For nearest OK International office or distributor contact 
information, please visit www.okinternational.com.   OK  International reserves the 
right to make engineering product changes without notice. 
 

For DX-3xx/3xx I/O Configuration and End of Cycle Switch information, please 
visit the DX-3xx/2xx User Guide webpage at http://www.okinternational.com