Spirax Sarco PLC - Page 9

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Information
This manual has been conceived as an operating guide for the control unit of SPIRAX SARCO Steam
Generators. Since every unit is built according to customer specications, the manual instructions might
sometimes appear too general and incomplete. Additional specic notes will be supplied when the proce-
dures substantially differ from those included in the standard manual.
Should this manual not respond to all questions or the procedures are not clearly comprehensive,
the user is invited to contact SPIRAX SARCO for any clarication.
Warnings
In the following pages several points with specic warnings are listed. Warnings are moreover repeated
when the procedures refer to areas of potential hazard.
All warnings and relevant precautions have to be carefully studied and followed to reduce the risk of injury
during operations of Installation, Start-up and Maintenance.
Every product or system using steam, diathermic oil, superheated water under pressure or
electric power can represent a potential hazard to personal injury when procedures are not properly
followed.
The simultaneous presence of water and electric power can generate hazardous conditions.
Areas with potential hazard
1. All connections and electric cables
2. All steam lines, valves, joints and pressure controllers
3. All steam lines, diathermic oil or superheated water, valves, joints and pressure controllers
Connections of main power supplies
All procedures for the connections of main power supplies have to be performed by trained and qualied
electrical personnel. The PLC unit for the control of SPIRAX SARCO Steam Generators are designed to be
installed in covered locations, unless otherwise specied by the customer.
Make sure to disconnect power before starting any operation of installation or maintenance.