Trouble Shooting
There are a multitude of reasons why you may not be getting the best out of your spray nozzles - System design, viscosity, surface tension, temperature, pump malfunction and spray nozzle design and wear will all have an effect on the spray quality being achieved. Assuming the system design is correct, no variation in pump pressure is experienced and also no variation in spray product, (i.e. nothing else has changed), then the spray nozzle itself must be considered.
| Changes in flow rate | Possible cause | Possible solution |
| Low flow rates | Nozzle clogging Wrong nozzle size |
Install filters, consider self cleaning or changing to nozzles that have larger free passage |
| Excessive flow rates | Nozzle wear | Change nozzle: consider harder wearing material |
| Undue orifice wear | Wrong nozzle size Wrong orifice material |
Check nozzle capacity and system design Consider harder wearing material |
| Â | Â | Â |
| Changes in spray pattern | Possible cause | Possible solution |
| Streaking in spray pattern | Nozzle clogging Nozzle wear Wrong nozzle design |
Install filters, consider self cleaning or changing to nozzles that have larger free passage |
| Increased droplet size | Nozzle wear | Change nozzle: consider harder wearing material |
| Orifice erosion & wear | Wrong nozzle size Wrong nozzle material |
Check nozzle capacity and system design |
| Uneven coating or cleaning | Worn orifice: Blocked orifice |
Change nozzle: consider harder wearing material |
| Not enough coverage | Wrong spray angle | Check nozzle specification: replace nozzles |
| Â | Â | Â |
| Changes in droplet size | Possible cause | Possible solution |
| Wrong size | Change in flow rate, spray pattern | See above |
| Â | Â | Â |
| Corrosion | Possible cause | Possible solution |
| Nozzle wear | Chemical attack | Change nozzle material |
The above causes and possible solutions are a general guide only. There are many other factors to be considered and one of our engineers can assist you in identifying the causes and advise you on a cost effective and energy saving way to improve your spraying operations.
CONTACT sales@icspray.co.uk or telephone +44 (0) 1642 057085