Mold-Masters Hot Runner, User Manual, Page: 119 / 319

10.9.3 Hydraulic Limit Switch Option (6500 Series and
6600 Series)
CAUTION
Failure to install the disk springs in the correct order will cause damage to
the gate.
CAUTION
NOTE
Use EXTOOLAS10 with the EXTSTUDM6 extraction tool to remove a
piston bottom with a limit switch piston top assembly.
Refer to ““10.12 Test the Proximity Sensor for Hydraulic Limit Switch Option”
on page 10-20.
1. Check the valve pin length. Refer to”10.6 Valve Pin Finishing of Tip” on
page 10-4.
2. Slide the valve pin into position.
3. Assemble the disk springs to the spring retainer stud.
a) Check for the correct orientation of the disk springs when installing.
b) 6500 Series: align the springs in five alternating groups of five,
convex and concave.
c) 6600 Series: align the springs in eight alternating groups of six,
convex and concave.
4. Install the disk spring assembly on top of the valve pin.
5. Grease and install the O-ring.
6. Install the hydraulic limit switch piston top and tighten. Recommended
torque setting 20-27 Nm (15-20 ft-Ib).
Figure 10-17 Hydraulic limit switch components
1
2
3
4
5
6
7
1. Sensor bracket assembly
2. Flat head screw
3. Trigger ring
4. O-ring
5. Limit switch cylinder top
6. Limit switch piston top
7. Cylinder
10-13 HYDRAULIC / PNEUMATIC ACTUATORS
Hot Runner User Manual
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