Eurotherm 590+ Series, Product Manual, Page: 195 / 308

Routine Maintenance and Repair
8-1
590+ Series DC Digital Converter
10
R
OUTINE
M
AINTENANCE AND
R
EPAIR
Maintenance
Because of its solid state design, the 590+ Digital drive has few items requiring service or
maintenance. Service typically is a matter of replacing fuses, checking electrical contacts, and
isolating problems in the overall system application.
Caution
Service procedures must be performed by qualified personnel with an understanding of
the dangers inherent in high voltage applications and the precautions necessary when
servicing industrial equipment. The customer is responsible for assessing the technical
competency of in-house service personnel.
Service Procedures
Required Tools and Equipment
Tools needed for routine service operations include basic hand tools — screwdrivers, wrenches,
etc.
WARNING!
Only qualified service personnel should attempt to repair or replace parts in the
590+.
Isolate the entire 590+drive from electrical power before attempting to work on it.
Preventive Maintenance
You should perform regular preventive maintenance every six months to ensure long life and
continued usefulness of the 590+. Keep the drive and its components clean, check auxiliary fans
if fitted, and make sure connections and mounting bolts have not loosened from vibration.
The control and field wires can be checked by gently attempting pulling the wires out of the
terminals. The terminals should hold the wires firmly in place.
All the remaining wires should be checked with a torque wrench. Refer to Chapter 11: Technical
Specifications - Termination Tightening Torque tables.
Repair
There are no user-serviceable components.
IMPORTANT: MAKE NO ATTEMPT TO REPAIR THE UNIT - RETURN IT TO EUROTHERM DRIVES.
Saving Your Application Data
The Converter retains saved settings during power-down. You can download and upload this
back into the repaired unit, if necessary. You may, depending upon your knowledge of the fault,
attempt the back-up of your application data now, refer to Chapter 5: “The Operator Station” -
Copying an Application.
If the fault clearly lies within the MMI, then return the unit for repair.