4. Remove the nut on the bottom-front of DPM bracket.
5. Slide the unit forward to disengage the rear mounting lug.
6. Lift the unit up and part way out of the enclosure.
7. Disconnect the I
2
C/power cable and temperature control output cables from the rear edge
of the board.
8. Remove the unit from the analyzer and place on ESD-safe work surface.
9. Unscrew the mounting screw for the temperature setpoint module stack using the access
hole near the center of the metal plate.
10.Unplug the temperature setpoint module stack from the left side of the board.
11.Remove the two mounting screws near the upper corners and remove the old unit from the
cage.
Configuring the New TC-DPM
Set the location ID switch on the replacement unit to match the unit being removed.
Installing the Replacement TC-DPM
1. Install the new unit into the DPM cage. Insert the bottom edge into the slot in the plastic
DPM mounting rail on the DPM cage, and secure with the two screws removed from the
old unit.
2. Plug the temperature setpoint module stack onto its mount on the left side of the unit.
3. Reinstall the screw to secure the temperature setpoint module stack through the access
hole on the right side of the unit.
4. Insert the rear lug into the slot at the rear of the DPM mounting position with the mounting
stud at the front inserted through the slot in the DPM bracket.
5. Slide backward to lock the rear mounting lug into the slot.
6. Reinstall the nut on the threaded stud to secure the DPM.
7. Reconnect the I
2
C/power cable and temperature control output cables from the rear edge
of the board.
8. Reconnect the RTD temperature input cables (top rear of unit, if present).
9. Follow the steps in the
General Analyzer Startup Procedure
.
2.6
Sensor Near Electronics (SNE) Software
The Sensor Near Electronics (SNE) is a software module that provides Maxum II Gas
Chromatograph physics control, data analysis and data reduction. This virtual SNE operates
as a set of intercommunicating tasks running on the pSOS+ operating system. These functions
run on the SYSCON2.1 hardware in recent Maxum II analyzers. In older analyzers, these
functions run on processors mounted in the SNE cage along with the DPMs.
Electronic Compartment Component Descriptions and Maintenance Procedures
2.6 Sensor Near Electronics (SNE) Software
Maxum II Reference Manual
72
Manual, 7/2017, 2000596-001
