Hitachi EC702MP-BB3, Operation Manual

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E-Compact MP-BB3 Series
5.4. Transmitter Operating Temperature Configuration
The transmitter’s operating temperature is measured on the power modules’ transistors and is configurable
between 50°C (122 °F) and 60°C (140 °F).
Configuration is done through the front panel Menu: Setup Menu “PA Temperature Control”.
This configuration varies according to room temperature and the transmitter’s efficiency and is necessary
to optimize the operating temperature and equipment’s lifespan.
This configuration shall be made when the equipment is activated following the procedure below:
1. With the transmitter running at operational power for at least 30 minutes, access the web or the PA
USB interface to verify fan rotation.
2. Check fan rotation for all fans in all of the PA’s.
3. Temperature adjustment must be done in order to obtain fan rotations between 5500 rpm and 6000
rpm.
4. If the highest rotation is below 5500 rpm, the temperature control has to be lowered. If it is above 6000
rpm, temperature control shall be raised.
5. Configure temperature at Setup Menu “PA Temperature Control”. Lower or raise the temperature
according to description in step 4 above. It is recommended that the procedure starts in steps of 4 °C.
6. Once configured, wait 5 minutes until transistor temperature stabilizes.
7. Repeat steps 3 through 6 until fan rotation is within range (5500 rpm to 6000 rpm).