Scheduled Maintenance; General; Maintenance Schedule - Hobart 6T28-600CL Operation And Maintenance Manual

3-phase solid state transformer-rectifiers

Table of Contents

OM-2244 / Operation and Maintenance Manual

DCS-600/ Series 500082 / Solid State Transformer-Rectifiers

Section 3

1) General

The ITW GSE GPU is designed to be as maintenance free as possible. Therefore, there are few

maintenance requirements. Field maintenance of the GPU should be performed only by qualified service

personnel, and should be limited to cleaning and inspection of the unit and its components, as well as, the

replacement of lamps and fuses. All service and repair work, including testing and calibration, should be

referred to the ITW GSE Service Department, to an authorized service shop for ITW GSE equipment, or

to qualified electronic technicians.

2) Maintenance Schedule

* EXTERIOR CABLES

Inspect equipment

Inspect AC input cables

Check cable connections (internal)

* CONTROLS AND INSTRUMENTS

Check voltmeter functioning

Check ammeter functioning

Check fan thermostat operation

Check indicating lights

Check starting current limit functioning

Check all output contactor contacts

Check power input contactor contacts

Check voltmeter & ammeter accuracy

Check all wiring and connections

Inspect and clean general (light duty)

Inspect and clean general (severe duty)

* FAN MOTOR

See Lubrication section below

December 15, 2014