April 1, 2021
April 2021
Spring officially started in March. The daffodils have bloomed here in Middle Tennessee and soon it will be safe to put out the tender vegetables like tomatoes and similar plants. I have done the annual maintenance on my lawn mower, pressure washer and other power equipment I need to use for the summer. I will be able to perform the routine maintenance duties around the house.
That is a good segue into the topic for April’s blog, the benefits of performing routine maintenance on your FISA hot runner nozzles. One of the main components in a properly operating nozzle is the spring. The spring can fatigue through overheating, that is why we recommend using a propane torch and not a MAPP torch to heat the nozzle to remove the piston assembly (torpedo front, piston, spring, and torpedo rear for the NH series and collar, spring and piston for the AH series).
The AH2/NH2 has two strengths of springs, SG2818K2NP for the standard force and the SG2819K2NP for the stronger force. The SG28 states this spring is for the AH2 or NH2 series nozzle. The 18 or 19 indicates the minimum length of the spring (mm) that will allow for proper operation inside the nozzle. This will ensure proper opening and closing to eliminate the drool or leakage of the melt.
If you are using the AH4 or NH4 They also have two strengths SG4022K2NP for the standard force and SG4024K2NP for the stronger force. Please use same precautions when heating the nozzle to remove the piston assembly. The SG40 states these springs are for the AH4 or NH4 series nozzle. The 22 or 24 for indicate the minimum length of the spring (mm) that will allow for proper operation inside the nozzle. This will ensure proper opening and closing to eliminate the drool or leakage of the melt.
After the removal of the piston assembly and the cleaning of the piston assembly, it is always good practice to measure the spring length with a set of calipers before the re-assembly. If the spring measure anything less than the minimum length of that spring, we recommend it be replaced. We also recommend replacing the seal ring, PS157, between the nozzle and the flange when you re-attach the nozzle to the flange. That will eliminate leakage between the flange and nozzle.
These items are inexpensive and help you provide a good quality part to your customer at the most competitive cost.
So, until next month, get out take a ride through the country, enjoy the spring flowers, the flowering trees and help ensure your hot runner nozzles are operating as new.
Contact me to get a quote for your replacement components. We have a complete stock of these items on the shelf and can ship 1-day ARO.
Please like us on Facebook at FISA Corporation
Mark Gilley
(931) 684-9433
sales@fisacorp.com
www.fisacorp.com
That is a good segue into the topic for April’s blog, the benefits of performing routine maintenance on your FISA hot runner nozzles. One of the main components in a properly operating nozzle is the spring. The spring can fatigue through overheating, that is why we recommend using a propane torch and not a MAPP torch to heat the nozzle to remove the piston assembly (torpedo front, piston, spring, and torpedo rear for the NH series and collar, spring and piston for the AH series).
The AH2/NH2 has two strengths of springs, SG2818K2NP for the standard force and the SG2819K2NP for the stronger force. The SG28 states this spring is for the AH2 or NH2 series nozzle. The 18 or 19 indicates the minimum length of the spring (mm) that will allow for proper operation inside the nozzle. This will ensure proper opening and closing to eliminate the drool or leakage of the melt.
If you are using the AH4 or NH4 They also have two strengths SG4022K2NP for the standard force and SG4024K2NP for the stronger force. Please use same precautions when heating the nozzle to remove the piston assembly. The SG40 states these springs are for the AH4 or NH4 series nozzle. The 22 or 24 for indicate the minimum length of the spring (mm) that will allow for proper operation inside the nozzle. This will ensure proper opening and closing to eliminate the drool or leakage of the melt.
After the removal of the piston assembly and the cleaning of the piston assembly, it is always good practice to measure the spring length with a set of calipers before the re-assembly. If the spring measure anything less than the minimum length of that spring, we recommend it be replaced. We also recommend replacing the seal ring, PS157, between the nozzle and the flange when you re-attach the nozzle to the flange. That will eliminate leakage between the flange and nozzle.
These items are inexpensive and help you provide a good quality part to your customer at the most competitive cost.
So, until next month, get out take a ride through the country, enjoy the spring flowers, the flowering trees and help ensure your hot runner nozzles are operating as new.
Contact me to get a quote for your replacement components. We have a complete stock of these items on the shelf and can ship 1-day ARO.
Please like us on Facebook at FISA Corporation
Mark Gilley
(931) 684-9433
sales@fisacorp.com
www.fisacorp.com