Siemens Maxum II Reference Manual

1. Ensure that power has been disconnected from the analyzer.
2. Open the electronics enclosure door.
3. Unplug SYSCON power cable from the bottom of the SYSCON cage.
4. Unplug the PECM 24V cable.
5. Loosen nuts (1 in photo A above)
6. Slide the power supply forward enough to disengage the power-supply tabs from enclosure
tabs as shown in photo below. (2 in photo A above)
7. Tilt the power supply clockwise to allow the tabs to clear the flanges. (3 in photo A above)
8. Drop the power supply off the nuts. (4 and 5 in photo B above)
9. Before completely removing the supply, unplug the safety ground wire from the spae lug
on the back of the enclosure. (See 7 in the photo C Removing the Power Supply Module
above.)
10.Slide the power supply out of encloure. (6 in photo B above)
To PECM power connector
To SYSCON
power connector
on bottom-left of cage
To safety
ground lug
on back wall
Mounting
f
langes on inside top of enclosure
Line-voltage
selector switch
Fuse holder
Line-cord connector
Figure 2-3 Power Supply Module Details
Reinstalling the power supply
The new supply is installed using the steps in reverse order. It may be necessary to slightly
bend the flange edges down to allow the supply bracket to engage the flanges. See C in the
photo
Removing the Power Supply Module above.
Electronic Compartment Component Descriptions and Maintenance Procedures
2.1 Power Supplies
Maxum II Reference Manual
16 Manual, 7/2017, 2000596-001

Siemens Maxum II Specifications

General

Category	Gas Chromatograph
Measurement Principle	Gas Chromatography
Communication Protocols	Modbus, Ethernet, Profibus
Operating Temperature	-20°C to 55°C
Power Supply	24 VDC or 100-240 VAC
Mounting	rack mount
Applications	Refinery, chemical, petrochemical, natural gas
Detectors	Thermal Conductivity Detector (TCD), Flame Ionization Detector (FID)
Sample Inlets	Multiple
Dimensions	Varies by configuration (e.g., 19" rack mount)