R.V.R. Elettronica PTRL-NV/S3, Техническое руководство

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R.V.R. ELETTRONICA S.r.l. (BO) Pag. 34
PTRLNV/S3 - Technical and Maintenance Manual
CHAPTER 4
MAINTENANCE
4.1 SAFETY REQUIREMENTS
WARNING WARNING WARNING WARNING WARNING WARNING WARNING
When the transmitter is operational, removing the top panel will
expose lethal voltages on the line voltage selector.
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 transmitter is the
periodic replacement of the cooling fan and the removal of accumulated
dust.
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 6 months and to replace noisy
or worn fans.
Fans should be replaced as a metter of course after no more than 18 months
of operation.
MAINTENANCE LEVEL 2
CARD REPLACEMENT
NOTE: TO FIT A CARD, FOLLOW THE REMOVAL PROCEDURE IN REVERSE.
4.3 MAIN CARD REPLACEMENT
1) Open the top cover of the unit.
2) Disconnect connectors CN1, CN2, CN3, CN4, CN5, CN6 and CN7.
3) Undo the nuts holding the card in place.
4) Remove the Main card with great care.
4.4 MODMETER CARD REPLACEMENT
1) Open the top cover of the unit.