Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 81 of 105
VII. System Maintenance Procedures (continued)
N. Process Temperature Controller Adjustment and Calibration (continued)
3. Signal Wire Inspection
Required Materials:
Straight Blade Screwdriver
Philips Drive Screwdriver
a. Place the System Power Switch to the OFF Position.
b. Disconnect the main electrical power from the machine.
c. Open the filter access door of the hood and separate the two halves of the hood
fan electrical connector.
d. Remove the three screws along the top of the control panel and the three screws
on both sides of the control panel hood. With a helper, lift the hood up and over the
control panel.
e. Remove the upper-left side panel of the machine. Remove enough of the insulation
to gain access to the temperature probe located at the bottom of the process tank.
f. Remove the cap from the RDT probe to gain access to the signal wires.
g. The signal wires from the probe to the controller are a red and black wire enclosed
in a gray jacket. Examine the condition of the wires and connection. The connection
must be clean and tight. Poorly connected wires will result in unstable temperature
indications from the temperature controller. Repair the wires as required.
NOTE: With the Temperature Controller operation and the signal wire integrity
verified: malfunctions of the system will require replacement of the RTD
temperature probe. Complete section-3: RDT Probe Replacement.
4. RDT Probe Replacement
Required Materials:
Straight Blade Screwdriver
Philips Drive Screwdriver
1-1/8” Open End Wrench
7/8” Open End Wrench
a. Place the System Power Switch to the OFF Position.
b. Disconnect the main electrical power from the machine.
c. Remove the upper-left side panel of the machine. Remove enough of the insulation
to gain access to the temperature probe located at the bottom of the process tank.
d. Remove the cap from the RDT probe to gain access to the signal wires. Remove
the signal wires from the probe.
e. Engage the hex of the RDT Probe Sheath with the 1-1/8” wrench.
f. Engage the hex of the RDT Probe with the 7/8” wrench. Hold the sheath from
moving and remove the RDT Probe with a counterclockwise rotation of the 7/8”
wrench.
CAUTION: Do Not allow the RDT Probe Sheath to turn or the seal to the process tank
may begin to leak AGENT from the tank.
WARNING! Wear safety glasses when removing or installing the probe.
g. Installation of the new probe is the opposite of removal.
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