Power; Ac Mains Operation - Ametek 303B User Manual

Power

The AMETEK 303B moisture monitor is equipped with three power source options. The unit
may be powered from either of two external power sources or an internal battery. Informa-
tion on the characteristics and limi-tations regarding these sources are described below:

AC Mains Operation

This configuration must not be altered by the operator! Only qualified service person-
!
nel may access the interior of the unit to change this setting and fuse. The rear panel
WARNING
label must be clearly remarked to indicate the new AC source information. If qualified
personnel are not available to perform these tasks, contact AMETEK Service.
The 303B is shipped with three feet (.91m) of nondetachable, extra-hard usage (Class 1, Div 2
requirement), AC power cord, pre-terminated at the unit. For European and other overseas
products, this cable will be of the CENELEC Harmonized type. In addition, the wire size
will be .82 mm2, or equivalent, for 10 amp use, and have the international insulation color
code of brown, light blue and green/yellow stripe.
In the case of use in North America the cable will be U.L. 62 and/or CSA C22.2 No. 49, 18
AWG, and have the North American color code of black, white, and green. In addition,
if a molded cord set is supplied, it will be properly approved for North American use or
Harmonized for European application.
If the above supplied power cable is not sufficient due to length, or unique specification,
the user may replace the cordage (for use in non-hazardous areas), but must abide by the
following safety requirements:
3-2 | 303B Moisture Analyzer Manual
1. The 303B is shipped with the internal AC/DC power supply board jumpered
and fused for the mains line voltage ordered by the customer (i.e. 120 vs. 240
VAC).
• Adhere to nationally recognized standards for cordage for use with this
type of equipment, having the power requirements stated in this manual
and for use in the intended environment.
• Retain the original connection characteristics in the new connection and
have the connection performed by qualified service personnel. This in-
cludes: