ITW Dynatec DM55 DynaDrum - Bulk Melter Startup Procedure, Daily Operation

ITW Dynatec
Chapter 5
Setting-up Operation, Daily Operation
Page 38 DM55 DynaDrum PP V6, Manual No.21-18, Rev.2.19
Startup Sequence and Caution
CAUTION
Considerations for PUR and other materials which exhibit high expansion and
contraction characteristics relative to temperature:
• In normal modes of operation, most hot melt adhesives do not exhibit high enough
expansion rates during start-up to pose any issues. The hoses of hot melt systems
are designed to accumulate and absorb volume and pressure changes during start-
up.
• But in the special case of adhesives with high expansion rates, the following
sequential start-up procedure must be followed to avoid hose or other equipment
failure.
• Note: In all steps, heat the zone to at least the minimum softening point of the
adhesive before advancing to the next step. This procedure always allows
expansion pressure to have an exit path and prevent excessive trapped pressure,
potential hose failure and/or seal failure.
1. Heat the applicator head.
2. Open the applicator’s module(s).
3. Heat the supply hose to the applicator.
4. Heat the metering station (if applicable).
5. Heat the primary supply hoses from the Bulk Melter.
6. Heat the Bulk Melter’s platen and pump.
• Shut down of a system processing these materials is the reverse order of the
above.
Bulk Melter Startup Procedure, Daily Operation
CAUTION
Before startup, be certain that the main switch and all motors and switches (of pumps,
applicators and hand-held applicators) are in the OFF position.
WARNING
EYE PROTECTION & PROTECTIVE CLOTHING REQUIRED
Always wear safety eye protection, protective gloves and long-sleeved clothing
when working on or operating the unit.
1. Check the complete unit and the traverse paths for safety. Fix visible damages
immediately.
2. Before switching the unit on, make sure that the starting unit could hurt no one!
3. Remove all material or other things not needed for the production from the workspace
of the unit!
4. Check and make sure that all safety devices are working in proper form!
5. Switch the main switch on. Upon powering up, the following will occur:
• The controller will automatically boot up.
• If drum is empty: the drum empty horn will sound and the red light will come on and
an alarm message will be displayed on the Touch Panel.
• If drum adhesive is low: the drum low amber light will come on and an alarm
message will be displayed on the Touch Panel.