Safety Information - HP 81110A Quick Start Manual

Installation & Safety Requirements

Safety Information

Safety Information
Safety
This is a Safety Class 1 instrument (provided with terminal for protec-
tive earthing). Before applying power, verify that the correct safety pre-
cautions are taken (see the following warnings). In addition, note the
external markings on the instrument that are described under Safety
Symbols. Do not operate the instrument with its covers removed.
Replace fuse only with specified type.
Warning
Before turning on the instrument, you must connect the protective earth
terminal of the instrument to the protective earth conductor of the
(mains) power cord. The mains plug must only be inserted in a socket
outlet with aprotective earth contact. Do not negate the protective action
by using an extension power cord without a protective grounding con-
ductor. Grounding one conductor of a two-conductor outlet is not suffi-
cient protection.
Service instructions are for trained service personnel. To avoid danger-
ous electric shock, do not perform any service unless qualified to do so.
Do not attempt internal service or adjustment unless another person,
capable of rendering first aid and resuscitation, is present.
If you energize this instrument using an auto-transformer (for voltage
reduction) make sure that the common terminal is connected to the earth
terminal of the power source.
Whenever it is likely that the ground protection is impaired, you must
make the instrument inoperative and secure it against any unintended
operation.
Do not operate the instrument in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
30 Installation & Safety Requirements HP 81110/04A User's Guide