MXI101V TECHNICAL SERVICE MANUAL
Rule #1 KILL THE AC POWER BEFORE IT KILLS YOU
Under no circumstances should any person reach within the cabinets for the purpose of servicing or
adjusting the equipment without first disconnecting the AC power or without the immediate presence of
another person capable of rendering aid. The “buddy” system is encouraged for transmitter work.
Rule #2 DO NOT TAMPER WITH INTERLOCKS OR SAFETY SHIELDS
Under normal circumstances, no safety shield should be removed.
Rule #3 REMOVE PERSONAL JEWELRY WHEN WORKING ON THE EQUIPMENT
The mains AC power to this transmitter can deliver high currents capable of melting metallic tools or
personal jewelry, such as watch bands, bracelets, or rings. Accidental short circuits from such metallic
objects can cause an explosive shower of molten metal which can result in serious personal injury.
Rule #4 KNOW FIRST AID AND KEEP FIRST AID SUPPLIES AVAILABLE
Illustrated first aid instructions for the treatment of electrical shock and burns and CPR procedures should
be displayed in a prominent location adjacent to the equipment. In rendering first aid, the timeliness and
effectiveness of the treatment are vitally important to the recovery of the injured person.
Always have a colleague with you when you work on the transmitter and make sure both of you know first
aid, including cardio-pulmonary resuscitation (CPR).
This is most important.
Without exception, all personnel should thoroughly familiarize themselves with the procedures involved. One
person, whose normal duties place him or her at the transmitter site often, should be given complete
responsibility and authority to ensure that first aid supplies are kept onsite and maintained. Prominently
display a list of emergency phone numbers. This list should include the numbers of the nearest police,
ambulance, hospital, doctor, fire department, paramedics, poison control center, public works (roads)
department, and the utility (power and phone) companies.
Do not try to work on the transmitter if you are tired or drowsy; you could make a fatal error in judgment.
2.3.1 Switch
to
Safety
Here are some safety suggestions, based partially on the knowledge of experts familiar with high-powered tubed
equipment, and partially on the procedures used at a typical utility company and at a company which makes and
tests high voltage devices. A few of these suggestions apply primarily to factory environments and require some
modification to be applied in transmitter settings.
Our thanks to the Varian Corporation for sharing its "Electrical Safety Training Program" notes. Our thanks also to
Ontario Hydro for its information booklets dealing with high voltage.
Have in place a comprehensive safety program, with defined procedures. Know First Aid and CPR.
Use the “buddy” system, with one person performing the actual service and a colleague observing. The observer
must be familiar with the work being performed and within sight and sound of the person doing the work. The
observer should not be engaged in any other work or be otherwise distracted; he must be available
instantly
in
case of accident.
Always have the observer with you when you work on the transmitter.
Pay attention to emergency communications requirements. This could even include a voice channel on the STL
so that constant communication with the studio can be maintained. Headset-equipped phones connected on this
voice channel should be installed in locations near hazardous areas or everyone on site should carry fully
charged cell phones. When you are administering CPR, you might not be able to leave your patient for the length
of time it could take to call paramedics, especially if phone service is poor, or lines are down, and/or you are in a
rural area without emergency telephone service (e.g., 911 in North America).
Do not defeat the interlock switches on access doors unless it is absolutely necessary and you know
exactly
what you are doing.
Keep the area neat and tidy, free of any interfering conductive material and free of any sharp objects. Remember
that reaction to a shock could cause you to strike nearby objects.
TSM21Q-365 Rev 0 July 17, 2009
MXi101V
5
