DME 375 Series Ring Gate Nozzle - Manual (Page 2)

5 ft-lbs.
ASSEMBLY PROCEDURE
1. Nozzle body must be cleaned of any material in the seal off area and threaded
areas before reassembling.
2. Careful attention should be taken to the needle as damage could occur if needle
is dropped or strikes a rigid material. Treat needle like a glass or ceramic material.
3. Install the heater using a Square Coil Heater wrench (Wrench included with
replacement heater). After the heater is installed, it should cover the entire length
of the nozzle body - stretch the heater by hand if necessary.
4. Apply an anti-seize compound on the tip threads.
5. Firmly screw the tip sub-assembly into the shank of the nozzle body. Tighten an
untighten two or three times making sure there is a good contact between the tip
For protection of the tip sub-assembly, a six point deep well socket is recommended.
and the shank. Torque the sub-assembly into the nozzle body using 30
DANGER
WARNING
out residual moisture before applying full power. Failure to do so may cause
IMPORTANT SAFETY INFORMATION
A hot-runner system includes electrical elements and may contain molten
plastic at elevated temperature and pressure. To avoid injury, exercise
caution by reading these instructions before servicing or operating the
system.
These instructions must be passed on to the end user where they should
be read before using this product. Failure to do so can result in serious
injury or death.
Failure to comply can result in serious injury or death:
STORED ENERGY AND HIGH TEMPERATURE HAZARDS
This product maintains molten plastic at high pressure. Use caution when
operating and servicing the system.
Physical contact with molten plastic may result in severe burns. Proper
protective equipment, including eye protection, must be worn. This product
has heated surfaces. Use caution when operating and servicing the system
to avoid severe burns. Proper protective equipment should be worn.
Failure to comply will result in serious injury or death:
ELECTRICAL HAZARDS
Improper voltages or grounding can result in electrical shock. Use only
with proper voltage and a proper earth ground.
To avoid electrical shock, do not operate product when wet.
Do not operate this equipment with covers or panels removed.
To avoid electrical shock, turn off main power disconnect and lockout /
tag out before servicing this device. Do not connect temperature sensors to
electrical power. It will damage the product and it can cause fire, severe
injuries or even death.
If green ground wire present wire must be connected to the ground.
Do not rebend rigid leads. Rebending leads might result in damage to circuit.
Product might absorb moisture when cool. Use low Voltage or power to drive
damage to this product.
PURPOSE. IN NO EVENT SHALL D-M-E BE RESPONSIBLE FOR LOSS OF USE, REVENUE
D-M-E SHALL NOT BE LIABLE FOR MISUSE OR FAILURE TO FOLLOW THE ENCLOSED
INSTRUCTIONS AND SPECIFICATIONS. D-M-E HERBY TO DISCLAIMS ALL IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR
OR PROFIT, OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGED.
CANADA 800-387-6600
29111 STEPHENSON HIGHWAY
MADISON HEIGHTS
MICHIGAN 48071 USA
US 800-656-6656
www.dme.net
OPERATING PROCEDURE
The nozzles are supplied with a Square (flat) Coil Heater or Cast-In Heater
equipped with type J thermocouple.
It is recommended to use a D-M-E closed loop Temperature Controller for
optimumTemperature Control.
When starting the nozzle, set the temperature to 10% voltage if using in open loop
manual type or to 200 F if using closed loop automatic type. In either case this
procedure will allow the heater to dissipate any moisture.
Make sure you maintain this start-up setting for 15 minutes.
Controller equipped with Step Smart ® , Smart Step ®
or other heater warm-up circuitry will change automatically.
It is essential to use controllers with the proper voltage and wattage capabilities.
The voltage and wattage of each heater is clearly marked on the heater tag.
Step Smart ®, Smart Start ® and DME ® are all registered trademarks
of DME Company.
REFER TO : MINI PRINT # 1800
INSTALLATION DATA
375 SERIES RING GATE NOZZLE
RG3/IS
heat to transfer into the tip before molding.
8. Wait a minimum of 5 minutes after set point has been achieved for sufficient
manifold are removed to ensure seal-off.
7. Seal ring for nozzle body must be replaced each time nozzle body and / or
damage could occur when working on nozzle assembly.
6. Careful attention should be taken to the heater / thermocouple leads as
ME-0741-PS-550-D
capacity. The information found below applies to the 375 Series Ring Gate Nozzles.
All interchangeable nozzles are similar, and differ only in size and material flow
FOR 375 SERIES RING GATE NOZZLES
OPERATING & SERVICING INSTRUCTIONS
Heater. Follow assembly procedures for Square Coil Heater.
08-08
5. Cast-In Heater may be removed if failure occurs and replaced with a Square Coil
replacement heater).
4. Remove the heater using a Square Coil Heater wrench (Wrench is included with
3. Tip and needle must be cleaned of any material before reassembling.
the nozzle must be "keyed" to prevent wire damages.
when removing tip counter-clockwise from the nozzle. If nozzle is still in the mold,
nozzle must be at processing temperature and the heater should be turned off
2. For removal of tip from nozzle, a six point deep well socket is recommended. The
1. Place the nozzle in a vice using "V" Block, then secure it firmly at the nozzle head.
DISASSEMBLY PROCEDURE
D-M-E COMPANY