R.V.R. Elettronica VJ3000, Инструкция по установке, техническому обслуживанию и ремонту

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R.V.R. ELETTRONICA S.r.l. (BO) Pag. 76
VJ3000 - Technical and Maintenance Manual
SECTION 4
MAINTENANCE
4.1 SAFETY REQUIREMENTS
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
When the transmitter is operational, removing the rear panel will
expose lethal voltages.
Use insulated tools for all types of adjustment and do not touch any
internal components when the unit is switched on.
Ensure that the unit is disconnected from all sources of power before
carrying out any inspection or maintenance work.
MAINTENANCE LEVEL 1
4.2 ROUTINE MAINTENANCE
The only routine maintenance required by the amplifier is the
periodic inspection of the cooling fans, the replacement of the air filter
and the removal of dust from the tube cavity. The period between such
action will depend on ambient operating conditions such as temperature,
air-borne dust levels and humidity. It is advisable to check the unit
every 3 months, replacing worn or noisy fans.
Eventual replacement of the tube will also be necessary.
The life of the tube will depend strongly upon operating conditions: eg.
line voltage fluctuations greater than ±5%, ambient temperature greater
than 30°C, high humidity, presence of dust and misalignment of the
amplifier will all lead to a greatly reduced tube life.
MAINTENANCE LEVEL 2
4.3 MODULE REPLACEMENT
NOTE TO FIT A MODULE REMOVAL PROCEDURE IN REVERSE
THESE PROCEDURES SHOULD ONLY BE CARRIED OUT BY HIGHLY SPECIALIZED
TECHNICIANS USING THE CORRECT EQUIPMENT.
MAINTENANCE ERRORS CAN CAUSE SERIOUS DAMAGE TO THE UNIT AND WILL
AUTOMATICALLY MAKE THE WARRANTY VOID.
4.4 TUBE REPLACEMENT
1) Move the sliding panel to its upper limit (rods fully exposed), using