Emerson L20 - Ultrasonic Stack Assembly

48 DCM00044 REV. 14
4.7 Ultrasonic Stack Assembly
Refer to Figure 4.8 for item listings when assembling the ultrasonic stack.
1. Apply an even, light coat of Molykote G-n paste (about equal in size to half a paper match head)
to the mating surfaces of the Converter, Booster and Horn. Do NOT apply paste to threaded
opening or to stud threads or to diaphragm. Do NOT use silicone grease.
2. Place the Rear Diaphragm Spring (Item 3 – 0.500” diameter center hole) and Clamp Ring (Item
1) onto the studded end of the Booster (Item 7). Then thread the Booster into the Converter. Be
careful to center the Diaphragm Spring on the Booster and then torque Booster and Converter to
55 ft/lbs (74.6 N-m) using two spanner wrenches. Do not clamp on the Converter.
3. Slide the Booster/Converter subassembly in through the rear of the polar shell. Assemble the
twelve M5 SHCS’s to fasten in an alternating pattern the Clamp Ring to the rear of the polar
shell.
4. Place a Clamp Ring and the Front Diaphragm Spring (Item 2 – 0.750" diameter center hole) onto
the studded end of the Horn (Item 6). Then thread the Horn into the Booster. Assemble the
twelve M5 SHCS’s to fasten in an alternating pattern the Clamp Ring to the front of the polar
shell. Be careful to center the Diaphragm Spring on the Horn and then torque Booster and Horn
to 80 ft/lbs (108.5 N-m).
5. Install the replaceable tip and loosely thread on the tip nut (applicable to replaceable Tip Horns
only). The Tip (or Horn blade) will have to be made square and parallel to the Anvil prior to
welding.
Figure 4.8 Exploded Ultrasonic Stack Assembly
WARNING General Warning
Do not operate ultrasonics while the tip is loose.
ITEM DESCRIPTION
1CLAMP RING
2 DIAPHRAGM SPRING, FRONT
3 DIAPHRAGM SPRING, REAR
4POLAR SHELL
51/2-20 STUD
6HORN
ITEM DESCRIPTION
7 BOOSTER
8 CONVERTER (105 STYLE)
9 SOCKET HEAD CAP SCREW
10 DOWEL PIN
11 T IP
12 TIP NUT
0.687in (17.45mm) 0.687in (17.45mm)
8 10 9 1 3 5 4 7 2 1 9 10 5 6 11 12