Nautel NX300, Руководство по эксплуатации и обслуживанию

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NX300 Operations and Maintenance Manual Operating the transmitter
Page 2-126 Issue 3.0 2012-11-01
Using the key-controlled access system
The NX300 high power transmitter is equipped with a key controlled interlock system ( Figure 2.97
on page 2-129 ) to ensure operator safety.
The transmitter’s rear doors must be closed and locked before ac power to the transmitter can be
turned on. Similarly, ac power must be turned off before any of the access panels can be opened.
This heading includes the following topics:
• "Components of the key-controlled access system", on page 2-126
• "Opening access panels", on page 2-127
• "Applying ac power to the transmitter", on page 2-127
• "Guidelines (1): ac power entrance panel", on page 2-128
• "Guidelines (2): antenna ground switch", on page 2-128
• "Guidelines (3): transfer case", on page 2-128
Components of the key-controlled access system
There are four (4) components in this key-controlled access system:
1. Ac Power Entrance (or Safety Interlock Switch): requires the
SERVICE ENTRANCE KEY
to be
turned on, after which the key cannot be released.
2. Antenna Ground Switch: requires the
SERVICE ENTRANCE KEY
to ground antenna. Cannot
be opened without a
TRANSFER CASE KEY
.
3. Transfer Case: requires the
TRANSFER CASE KEY
to release access lock keys. Will not release
TRANSFER CASE KEY
until all access lock keys are in the transfer case.
4. Access Lock Keys (quantity 6): required to open access panels throughout the transmitter
system. Access panels must be closed and locked to release access lock keys.