ITW Dynatec
D SERIES V6 DCL ASU Manuals
Troubleshooting Page 7-3
Revised 10/14
High-Temperature Redundant Overtemp Thermostat
The D Series ASU includes a mechanical (redundant) overtemp thermostat that acts as a safety
backup. If the ASU’s hopper temperature should exceed 232C (450F), the thermostat will cause the
ASU’s power relays to open and power to the hopper and all hoses and heads will be cut off. The
mechanical thermostat must be manually re-set after the hopper temperature falls below 204C
(400F).
The overtemp thermostat is located on the right-hand side of the hopper, behind the access cover
(see illustration on previous page). To reset: turn OFF the ASU’s main power switch; loosen the
slide latch to remove the access cover; push the center of the thermostat’s insulator to re-set; restart
the ASU.
Lithium Battery on Operator’s Panel Printed Circuit Board
The operator display panel’s printed circuit board contains a lithium battery which powers the sev-
en-day scheduler’s clock. The normal life of this battery is about ten years. When the battery needs
replacement, the scheduler’s clock does not function, but other controller features remain i ntact. Re-
turn the board to ITW Dynatec for battery replacement.
DynaControl V6 Modules
The DynaControl V6 control package is built from encapsulated modules that snap onto the DIN
rail within the ASU. The modules communicate via a proprietary serial communication. Each mod-
ule has a status LED (ON/ERR). This LED shows the module’s status, as follows:
Blinking green = Everything o.k. Communication is working
Solid red = Communication f ault
No Light = Module is defective or no voltage supply
7-Day Scheduler Use with Pendant Control
Units which are controlled via the optional pendant controller must remain connected to the p endant
if the 7 -Day Scheduler feature is employed. The 7-Day Scheduler will not function when the
pendant controller is disconnected.
LED
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