III
Operating Precautions
Do not tamper with the safety interlocks. The Phoenix™ is equipped with three door
safety interlock switches which prevent the instrument from producing microwave
power if the door is open. Tampering with the safety interlocks may allow microwave
production when the door is open, which is very dangerous.
Do not place any object between the front of the microwave cavity and the door or
allow soil or cleaner residue to accumulate on sealing surfaces.
Do not operate the instrument if it is damaged. It is particularly important that the
instrument door close properly and that there is no damage to the door (bent), hinges
or latches (broken or loosened), or door sealing surfaces.
The instrument utilizes high voltages and microwave radiation. It should be adjusted
or repaired only by qualifi ed service personnel trained in repair and maintenance of
high voltage and microwave power systems.
The possibility of instrument-induced electromagnetic interference (EMI) is minimal
if precautions outlined in this manual are followed. However, it is recommended
that the user post a sign warning pacemaker wearers that a microwave device is in
operation. Also, the instrument should not be placed close to any electrical device
susceptible to EMI. If the instrument is suspected of inducing EMI, the door and the
front of the cavity should be carefully inspected for damage. A microwave leakage
measurement should be performed as outlined in the Maintenance and Service sec-
tion of this manual. Leakage above the legal limit of 5 mW/cm
2
should be reported
to the CEM Service Department.
WARNING
Improper installation or use of the instrument grounding wire and/or
plug can result in electrical shock.
The Phoenix instrument must be grounded. In the event of an electrical short circuit,
grounding reduces the risk of electric shock by providing an escape wire for the
electric current. This instrument is equipped with a cord having a grounding wire
with a grounding plug. The plug must be plugged into a dedicated outlet that is
properly installed and grounded.
If grounding instructions are not completely understood or if doubt exists that the
instrument is properly grounded, consult a qualifi ed electrician or service technician.
If it is necessary to use an extension cord, use only a 3-wire extension cord with
a 3-blade grounding plug that has a 3 -slot electrical receptacle. The marked rating
of the extension cord shall be equal to or greater than the electrical rating of the
instrument.
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