Nautel NX15, Руководство по эксплуатации и обслуживанию

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NX15/NX25 Operations and Maintenance Manual Operating the transmitter
Issue 6.0 2019-01-31 Page 2-133
Using the Keyed Controlled Access System (optional)
The NX15/NX25 high power transmitter can be equipped with a optional key controlled
interlock system ( Figure 2.100 on page 2-137 ) 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 2-134
• “Opening access panels” on page 2-135
• “Applying Ac power to the transmitter” on page 2-135
• “Guidelines (1): Ac power entrance panel” on page 2-136
• “Guidelines (2): Antenna ground switch” on page 2-136
• “Guidelines (3): Transfer case” on page 2-136
Components of the key-controlled access system
There are four (4) components in this key-controlled access system:
1. Ac Power Entrance (or Ac Disconnect 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.
WARNING: DO NOT defeat (bypass) the keyed interlock system. Defeating the keyed interlock
system will allow access to areas of the transmitter where dangerous voltages are present, and
contact with exposed conductors carrying these dangerous voltages could cause serious injury or
death.