R.V.R. Elettronica PTX30-UHT, Installation, Technical And Maintenance Manual, Page: 39 / 171

PTX30-UHT Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 39
CHAPTER 4
MAINTENANCE PROCEDURES
4.1 INTRODUCTION
This section provides general maintenance information and electri-
cal adjustment for the PTX30-UHT exciter.
Maintenance is divided into categories dependent upon the complexity of
the procedure and the test equipment required to complete the
maintenance.
4.2 SAFETY CONSIDERATIONS
WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!
When the exciter is operated with the top cover removed, hazardous
voltages are accessible on the AC line voltage selector and high currents
are accessible on the exposed terminals of the power supply filter
capacitor and power transistors mounted to the RF amplifier heat sink
assembly.
Use the insulated tuning tool provided for any adjustment and do not touch
any component within the amplifier when power is energized.
Ensure all primary power is disconnected from the exciter before
attempting equipment maintenance.
FIRST LEVEL MAINTENANCE
4.3 ORDINARY MAINTENANCE
The only regular maintenance needed by PTX30-UHT, is the periodical
substitution of the blowers, and the cleaning of dust filters and eventual
dust accumulated inside the exciter.
The time between overhauling of the blowers depends upon several
environmentally factors, temperature, humidity, dust pollution etc.
It’s desiderable a check every 6 months, with the substitution of noisy
blowers, and all the way a general blowers substitution every 18 months.
SECOND LEVEL MAINTENANCE
4.4 CARDS SUBSTITUTION
This section contains the useful informations for the cards
substitution.
ATTENTION! TO REINSTALL THE CARDS IS ENOUGH TO EXECUTE OPERATIONS