Melter Sensor Repairs - Graco InvisiPac HM10 Instructions Manual

Melter Sensor Repairs

210
F . 72: Temperature Sensor and Over-Temperature
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Switch Locations
Replace the Temperature Sensor (RTD)
See F . 72 for details.
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1. Prepare Equipment for Service. Follow the steps
on page 82.
2. Remove the melter cover (10). See Remove
Equipment Covers. Follow the steps on page 82.
3. Access the Electrical Enclosure. Follow the steps
on page 83
4. See F . 73 and Electrical Schematics, page 105
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for wiring details.
a. Disconnect the temperature sensor (RTD) from
the circuit board.
b. Pull the RTD lead out of the electrical enclosure
grommet (210).
c. Connect the new RTD sensor to the melter
circuit board.
d. Pull the new RTD sensor through the electrical
enclosure grommet (210).
3A7259C
Temperature Sensor (RTD)
264
252
Over-Temperature Switch
233
245
F . 73: Melter Control Connections (J1)
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5. Install the ADM Screen. Follow the steps on page
83.
6. Install the new temperature sensor (252) in the
melter.
a. Remove the temperature sensor retaining
screw (264). Remove and discard the old
temperature sensor (252).
b. Install the new temperature sensor (252) in the
melter and fasten with the retaining screw
(264). Torque to 7-10 in-lb (0.7-1.0 N•m).
7. Install the melter cover (10) onto the equipment.
See Install Equipment Covers, page 83.
Repair
85