Routine Ultrasonic Plastic Welder Maintenance
The routine maintenance items for an ultrasonic welder are simple unless there is a machine failure. The following are recommended maintenance procedures.
1. Make sure that you have a Mylar washer between the converter and booster and between the booster and horn. We recommend replacing these washers every 6 months. A bag of (10) Mylar washers can be purchased for $12.00 from Plastic Assembly Technologies, Inc. at www.patsonics.com.
The Plastic Assembly Technologies part numbers are as follows:
· MW-12 for a bag of (10) Mylar washers for use on ultrasonic horns and boosters with ½-20 studs
· MW-38 for a bag of (10) washers for use on ultrasonic horns and boosters with 3/8-24 studs.
2. When disassembling the stack (ultrasonic converter, booster & horn) for replacing the Mylar washers, check the studs to make sure they are properly torqued. The stud torque is 290 inch/lb for 3/8-24 studs and 450 inch/lb for ½-20 studs. When reassembling the stack, the torque specification of the converter to the booster and the horn to the booster is 220 inch/lb.
3. Drain the air filter as required if it has collected moisture. Dry air is recommended as air with moisture will eventually impact the functionality of the pneumatic system.
4. Once a year or more in dirty environments, use light air pressure or vacuum to clean the inside of the power supply. Make sure the power is disconnected before following this procedure.
