Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 84 of 105
VII. System Maintenance Procedures (continued)
N. Process Temperature Controller Adjustment and Calibration (continued)
7. Alarm #2 Contact Testing
Required Materials:
VDC Voltmeter
Straight Blade Screwdriver
a. Connect Main Power to the machine.
b. Place the System Power Switch to the ON position.
WARNING! THE AREA INSIDE THE CONTROL PANEL HOOD CONTAINS
120VAC POWER CONNECTIONS; DO NOT REST ANY PART OF
YOUR BODY ON ANY OF THE INTERNAL COMPONENTS.
c. Connect the negative voltmeter probe to the PLC (-24VDC) terminal Connect the
positive voltmeter probe to the PLC (+24 VDC) terminal: Verify +24 +/-3 VDC.
If the specified voltage cannot be obtained the PLC is defective.
d. With the negative voltmeter probe connected to the PLC (-24 VDC) terminal
connect the positive voltmeter probe to the Temperature Controller J1-7 terminal
and verify +24 +/-3 VDC.
If the specified voltage cannot be obtained the wire run from the PLC to J1-7 is not intact.
e. With the negative voltmeter probe connected to the PLC (-24 VDC) terminal
connect the positive voltmeter probe to the Temperature Controller J1-8 terminal.
Press and hold the test switch of the Temperature Controller. Verify a voltage that
toggles from 0 to +24 VDC.
If the voltage does not toggle the Temperature Controller must be replaced.
f. With the negative voltmeter probe connected to the PLC (-) terminal connect the
positive voltmeter probe to the PLC Input #A1 press and hold the test switch of the
Temperature Controller. Verify a voltage that toggles from 0 to +24 VDC.
If the voltage does not toggle the wire run from the Temperature Controller J1-8 to the PLC input
#A1 is not intact.
If the voltage does toggle but the #A1 lamp on the PLC status indicator does not toggle on and off
the PLC is defective and must be replaced.
To Next Page