American Magnetics 135 & 136 Liquid Helium Level Instruments (CE-Marked) - Manual (Page 21)

Rev. 3 9
2 Installation
Warning
Before energizing the instrument, the earth ground of the power
receptacle must be verified to be at earth potential and able to carry
the rated current of the power circuit. Using extension cords should
be avoided; however, if one must be used, ensure the ground
conductor is intact and capable of carrying the rated current.
In the event that the ground path of the instrument becomes less
than sufficient to carry the rated current of the power circuit, the
instrument should be disconnected from power, labeled as unsafe,
and removed from place of operation.
Do not operate this instrument in the presence of flammable gases.
Doing so could result in a life-threatening explosion.
Do not modify this instrument in any way. If component
replacement is required, return the instrument to AMI facilities as
described in the Service section of this manual.
If the instrument is used in a manner not specified by AMI, the
protection provided by the equipment may be impaired.
2.1 Unpacking the Instrument
Carefully remove the instrument, sensor, and interconnecting coaxial
cables from the shipping carton and remove all packaging material. A rack
mounting kit is supplied if the instrument was purchased with the rack
mount option.
Note
If there is any shipping damage, save all packing material and
contact the shipping representative to file a damage claim. Do not
return the instrument to AMI unless prior authorization has been
received.
If the chassis is a table top model, place the instrument on a flat, secure
surface.