Heater platen is
overheating.
1. The mechanical Relay may be
stuck in the closed position (zone 1,
lower platen #1 labeled on this relay,
zone 2, left upper and zone 3, right
upper).
2. If you are receiving 12vdc on the
coil of the relay, the controller is
properly functioning.
Use an Ohm meter for a
continuity check must check at
the cold pins of the heater (where
the heater wire is brazed at
the cold pin. This will eliminate
any other failure before the
heater element validating the loss
off continuity at the source the
heater element.
Upper platen falling
down or lost
tension.
The springs have lost some
tension.
Remove rear panel and adjust the
retaining collars on shaft by
winding the spring tighter. There
are multiple set screws that need
to be loosened in order to wind
the spring tighter. Once proper
tension is achieved, tighten all set
screws to prevent tension loss.
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