Chapter 7
Maintenance and Repair Notes
DM55 DynaDrum PP V6, Manual No.21-18, Rev.2.19 Page 127
7.12 Electrical Parts Replacement
Disconnect incoming electrical power.
Turning OFF the Bulk Melter’s circuit breaker will not reduce the danger of
electrical shock at the terminals or connections at the circuit breaker.
To Access Electrical Parts within the Platen Core
The platen core is located on top of the platen. Within it are located the thermostat disc,
two RTD sensors (one RTD is in the platen core and one is in the platen face) and the six
cast-in heaters. Each of these parts is accessed through inspection covers located on the
platen cover.
Thermostat Disc Replacement
Located under the round inspection cover, the over-temp (NC) thermostat disc is
removed via two mounting screws which hold it to the platen core. Pull off the two quick-
disconnect connectors. Use thermal paste (PN 001V062 heat transfer compound) during
re-installation.
Note on Cast-in Heaters
The platen core contains six cast-in heaters which should last the life of the Bulk Melter.
When troubleshooting, each top element should read 9.93 Ohms (+10%/-5%) and each
bottom element should read 9.10 Ohms (+10%/-5%) at room temperature.
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