Specifications

Note:
Use the following formula to determine cold clearance:
[" H" x (T° processing in °C - 20) x 11,5 x 10
-6
- 0,076] x 46 mm
"H"
“H” = the manifold thickness.
Do not include reflector plates in this measurement.
11. Test-fit the top clamp plate to check interference between
upper support pads and any manifold components or wi-
ring. Check the Nozzle “X” dimension ( Figure 5 ). This
dimension should fall within ± 0.025 mm of each other.
Remove the top clamp plate and inspect the manifold
area. Remove the retainer plate and set it aside tempo-
rarily.
12. Next remove the manifold, taking care to protect wiring,
and prepare to install seal rings into the head of the
nozzles. Check to see that all nozzles and their locations
are properly marked. Mark all nozzles, power and ther-
mocouple leads to ensure proper connection into the
system terminal box. At this time, it is possible to wire-up
the nozzle assemblies to the power and thermocouple
connectors.
13. Clean seal ring counterbores, install seal rings, and then
carefully install the manifold into position without displa-
cing the seal rings from their locations.
It is now time to wire-up the power and thermocouple
leads to the proper connectors.
Clean and install the manifold retainer plate.
Do not pinch wiring.
Clean and install the top clamp plate. Then torque down
the bolts that tie the top clamp plate to the nozzle plate
using the torque values specified on the system design
drawing.
14. Determine the locating ring cut-off dimension “G”
( Figure 5 ). If a drool ring is used, measure down from
the surface of the locating ring flange to the nozzle seat
flange on which the drool ring rests. Subtract 0.25 mm to
determine dimension “G”. Machine the locating ring skirt
length to this dimension. Finally, install the drool ring and
locating ring onto the top clamp plate. If the locating ring
rests directly on the manifold, please refer to page 66.
15. Final assembly:
Carefully assemble the top clamp plate. Use caution to
avoid pinching any of the system wiring. Install all as-
sembly screws and torque down as required. Recheck
all wiring for continuity. Bench test the unit.
62
The Hot-One System
D-M-E Runnerless Molding Systems
Guidelines for the use of a manifold block
Drool ring
Cold clearance
Locating ring
Upper support pad
Top clamp plate (TCP)
for thermal expansion
"Nozzle X"
"TCP"
"SP"
"G"
(Figure 5)