Electronic Pressure Control Module; Epc Module Description - Siemens Maxum II Reference Manual

Procedure
1. Back up and shut down the unit using the
2. Open electronic enclosure door (using a 4mm (5/32") Allen wrench if necessary).
3. Unplug the cable to the solenoid to be replaced.
4. As show below, use a small screwdriver to remove the two screws that fasten the solenoid
to the manifold. If the black gasket adheres to the manifold after removing the solenoid,
then remove the gasket manually.
5. Install the new solenoid, using a new gasket from the kit.
6. Reattach the cable to the solenoid.
7. Follow the steps in the
2.9

Electronic Pressure Control Module

2.9.1

EPC Module Description

The Electronic Pressure Control (EPC) Module reduces oven set-up time by using precise
pressure control without restrictors or needle valves. This module also allows programmed
pressure control for faster chromatography and modern applications. It allows precise control
of pressures. The EPC can be used for both carrier and fuel gas supply, which eliminates the
less reliable mechanical regulation. Four independent EPCs can be installed in one Maxum II.
Each EPC provides two independently regulated pressures for use on carrier and flame fuel
sources in the oven. Gas connection is located in the regulator section. Regulated pressure
range is 5-100 psig. Two slightly different versions of the EPC are available. The primary
difference between the two versions is that the newer version is equipped with DIP switches
that identify the location ID of the module. The older version uses a jumper plug to identify the
ID. The differences between these methods of identification are described fully in the procedure
to replace the EPC. There are no other functional differences.
Maxum II Reference Manual
Manual, 7/2017, 2000596-001
Electronic Compartment Component Descriptions and Maintenance Procedures
Solenoid Valve Retaining Screws
General Analyzer Startup Procedure.
2.9 Electronic Pressure Control Module
General Analyzer Shutdown Procedure .
Solenoid Valve Mounting Position
81