48
MATERIAL HEATER
WARNING! Before performing any maintenance,
make sure the Main Power Switch is OFF and
incoming power is locked OFF. NEVER access
the inside of the Control Panel with the
Proportioner power supply ON. The Heaters are
components that reach high temperatures; you
must wait until they have cooled before
handling and bleed all material pressure to zero.
NOTE! The Thermocouple is assembled
into the Connector Body with a Ferrule
and Nut. Once inserted into the Body
and the Nut is tightened, the Ferrule
locks to the Thermocouple and does not
allow it to be relocated or moved. The
location of the Thermocouple is very
important and must be done correctly
before tightening the Nut.
Thermocouple Replacement
1. Unscrew the Nut that holds the defective Thermocouple
and remove from the Body. Disconnect Thermocouple
wiring located under the Top Cover of the Heater. Remove
Body and discard.
2. Install Connector Body into Heater using an open-end
wrench and tighten to prevent leakage. Teflon Tape or
appropriate Thread Sealant should be used.
3. Slide the Nut and the Ferrule over the Thermocouple and
insert this assembly into the Connector Body until it comes
into positive physical contact with the Heating Rod.
Make sure the Spring does not prevent the Thermocouple
from making contact with the Heating Rod.
4. Slowly tighten the Nut using an open-end wrench (9/16”),
ensuring the Thermocouple maintains positive physical
contact with the Heating Rod.
5. Reinstall the Thermocouple wires.
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